3012 
SEC. 107652. TWO-PART LIQUID SILICONE KITS. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.24.63 
Two-part liquid silicone kits 
(parts A and B) containing 
58 to 70 percent by weight 
aluminum oxide (CAS No. 
1344–28–1) treated with 
tetrapropyl silicate (CAS No. 
682–01–9), 10 to 20 percent 
by weight ethenyl-[eth-
enyl(dimethyl)silyl]oxy- 
dimethylsilane (CAS No. 
68083–19–2), 5 to 15 per-
cent by weight [di-
meth-
yl(trimethylsilyloxy)silyl]oxy- 
ethenyl-methyl- 
trimethylsilyloxysilane (CAS 
No. 67762–94–1), 5 to 15 
percent by weight iron oxide 
(CAS No. 1309–37–1), 1 to 
3 percent by weight 
bis(dimethylsilyloxy)- 
dimethylsilane (CAS No. 
70900–21–9) and 1 to 3 per-
cent by weight silica, 
[(ethenyldimethylsilyl)oxy]- 
and [(trimethylsilyl)oxy]- 
modified (CAS No. 68988– 
89–6) (provided for in sub-
heading 3824.99.92) .............
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107653. HYDROPHOBIC PRECIPITATED SILICA. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.24.64 
Siloxanes and silicones, di- 
methyl, reaction products 
with silica (CAS No. 67762– 
90–7) (provided for in sub-
heading 3824.99.92) .............
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107654. SILANE, TRIMETHOXYOCTYL-, HYDROLYSIS 
PRODUCTS. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading:
3013 
‘‘ 
9902.24.65 
Dioxosilane; 
trimethoxy(octyl)silane (CAS 
No. 92797–60–9) (provided 
for in subheading 
3824.99.92) ...........................
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 
107655. 
1,1,1-TRIMETHYL-N- 
(TRIMETHYLSILYL)SILANAMINE HYDROLYSIS 
PRODUCTS. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.24.66 
1,1,1-Trimethyl-N- 
(trimethylsilyl)silanamine hy-
drolysis products with silica 
and 3-(triethoxysilyl)-1- 
propanamine (CAS No. 
199876–44–3) (provided for 
in subheading 3824.99.92) ...
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107656. WATERBORNE EPOXY CURING AGENTS. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.24.67 
Waterborne epoxy curing 
agents based on cycloaliphatic 
amine technology containing 
(3-aminimethyl-3,5,5- 
trimethylcyclohexylamine) 
(CAS No. 285513–2) (pro-
vided for in subheading 
3824.99.92) ...........................
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107657. PREPARATIONS BASED ON 1-PHENYLICOSANE- 
1,3-DIONE. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.24.68 
Preparations based on 1- 
phenylicosane-1,3-dione (CAS 
No. 58446–52–9) (provided 
for in subheading 
3824.99.92) ...........................
Free 
No change 
No change 
On or before 
12/31/2023
’’.
3014 
SEC. 107658. MIXTURES OF 2-MERCAPTOPROPIONIC ACID, 
METHYL 
ESTER, 
O-ETHYL 
DITHIOCARBONATE. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.24.69 
Mixtures of methyl 2- 
ethoxycarbothioylsulfanylpro-
panoate (CAS No. 351491– 
23–1); heptane (CAS No. 
142–82–5) and 
methanedithione (CAS No. 
75–15–0) (provided for in 
subheading 3824.99.92) ........
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107659. EPOXY CURING AGENTS. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.24.70 
Epoxy curing agent mixtures 
of linseed oil polymer with 
bisphenol A, bisphenol A 
diglycidyl ether, 
diethylenetriamine, formalde-
hyde, glycidyl phenyl ether 
and pentaethylenehexamine 
(CAS No. 68915–81–1) (pro-
vided for in subheading 
3824.99.92) ...........................
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107660. ALIPHATIC AMINE CURING AGENTS. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.24.71 
[3- 
(Aminomethy-
l)phenyl]methanamine (CAS 
No. 1477–55–0) (provided 
for in subheading 
3824.99.92) ...........................
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107661. NON-HALOGENATED FLAME RETARDANTS. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading:
3015 
‘‘ 
9902.24.72 
Non-halogenated flame 
retardants based on organic 
phosphinates alu-
minum;diethylphosphinate 
(CAS No. 225789–38–8) 
phosphonic acid, aluminum 
salt (3:2) (CAS No. 56287– 
23–1) (provided for in sub-
heading 3824.99.92) .............
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107662. LIGAPHOB N 90. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.24.73 
Fatty acids, C16–18 and 
C18–unsaturated, sodium 
salts (CAS No. 68424–26–0) 
(provided for in subheading 
3824.99.92) ...........................
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107663. ORGANOMODIFIED SILOXANE. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.24.74 
Mixtures of poly[oxy(methyl- 
1,2-ethanediyl)], α-butyl-ω- 
hydroxy- (CAS No. 9003–13– 
8); polysiloxanes, di-Me, hy-
droxy-terminated, ethoxylated 
propoxylated (CAS No. 
64365–23–7); and oxirane, 2- 
methyl-, polymer with oxirane 
(CAS No. 9003–11–6) (pro-
vided for in subheading 
3824.99.92) ...........................
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 
107664. 
METHYL 
PALMITATE-STEARATE, 
HYDRO-
GENATED. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.24.75 
Fatty acids, C16–18, methyl 
esters (methyl palmitate-stea-
rate, hydrogenated) (CAS 
No. 85586–21–6) (provided 
for in subheading 
3824.99.92) ...........................
Free 
No change 
No change 
On or before 
12/31/2023
’’.
3016 
SEC. 107665. OLFINE E1010. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.24.76 
Mixtures of ethane-1,2- 
diol;2,4,7,9-tetramethyldec-5- 
yne-4,7-diol (CAS No. 9014– 
85–1) (provided for in sub-
heading 3824.99.92) .............
1% 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 
107666. 
CERTAIN 
NON-HALOGENATED 
FLAME 
RETARDANTS. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.24.77 
Non-halogenated flame 
retardants based on organic 
phosphinates alu-
minum;diethylphosphinate 
(CAS No. 225789–38–8) 
phosphoric acid;1,3,5-tri-
azine-2,4,6-triamine (CAS 
No. 218768–84–4) (provided 
for in subheading 
3824.99.92) ...........................
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107667. FLAME RETARDANTS. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.24.78 
Non-halogenated flame re-
tardant based on organic 
phosphinates alu-
minum;diethylphosphinate 
(CAS No. 225789–38–8) 
phosphoric acid;1,3,5-tri-
azine-2,4,6-triamine (CAS 
No. 218768–84–4) boron zinc 
oxide (CAS No. 12767–90–7) 
(provided for in subheading 
3824.99.92) ...........................
Free 
No change 
No change 
On or before 
12/31/2023
’’.
3017 
SEC. 
107668. 
PREPARATIONS 
BASED 
ON 
ACETYL 
HEXAPEPTIDE-8 AND PENTAPEPTIDE-18. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.24.79 
Mixtures of propane-1,2,3- 
triol (CAS No. 56–81–5); 
(4S)-4-acetamido-5-[[(2S)-1- 
[[(2S)-1-[[(2S)-5-amino-1- 
[[(2S)-1-[[(2S)-1-amino-5- 
(diaminomethylideneamino)- 
1-oxopentan-2-yl]amino]-5- 
(diaminomethylideneamino)- 
1-oxopentan-2-yl]amino]-1,5- 
dioxopentan-2-yl]amino]-4- 
methylsulfanyl-1-oxobutan-2- 
yl]amino]-4-carboxy-1- 
oxobutan-2-yl]amino]-5- 
oxopentanoic acid (CAS No. 
616204–22–9); L-tyrosyl-D- 
alanylglycyl-L-phenylalanyl- 
L-leucine (CAS No. 64963– 
01–5); 2-hydroxypropane- 
1,2,3-tricarboxylic acid hy-
drate (CAS No. 5949–29–1); 
octane-1,2-diol (CAS No. 
1117–86–8) and water (CAS 
No. 7732–18–5) (provided 
for in subheading 
3824.99.92) ...........................
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107669. LITHIUM SILICON OXIDE. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.24.80 
Lithium poly-silicate (lithium 
silicon oxide) in dark gray 
powdered form (CAS No. 
12627–14–4) (provided for in 
subheading 3824.99.92) ........
3.9% 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107670. BRANCHED OLEFIN FROM PROPYLENE POLYM-
ERIZATION. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading:
3018 
‘‘ 
9902.24.81 
Branched olefin from pro-
pylene polymerization (12- 
[(2S,3R)-3-octyloxiran-2- 
yl]dodecanoic acid) (CAS No. 
9003–07–0) (provided for in 
subheading 3902.10.00), the 
foregoing other than poly-
propylene in pellet form, con-
taining 1 percent or more but 
not over 10 percent by weight 
of mineral filler (talc) and 10 
percent or more but not over 
30 percent by weight of car-
bon powder ............................
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107671. POLYPROPYLENE PELLETS. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.24.82 
Polypropylene in pellet form, 
containing 1 percent or more 
but not over 10 percent by 
weight of mineral filler (talc) 
and 10 percent or more but 
not over 30 percent by weight 
of carbon powder (CAS No. 
9003–07–0) (provided for in 
subheading 3902.10.00) ........
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107672. PROPYLENE-ETHYLENE COPOLYMER. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.24.83 
Poly(propylene-co-ethylene) 
(CAS No. 9010–79–1) (pro-
vided for in subheading 
3902.30.00), the foregoing 
other than ethylene-propylene 
copolymers containing 50 to 
75 percent by weight of pro-
pylene ....................................
4.9% 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107673. ETHYLENE-PROPYLENE COPOLYMERS. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading:
3019 
‘‘ 
9902.24.84 
Ethylene-propylene copoly-
mers, containing 50 to 75 
percent by weight of pro-
pylene (CAS No. 9010–79–1) 
(provided for in subheading 
3902.30.00) ...........................
3.3% 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107674. BENZENE ALKYLATED WITH POLYPROPYLENE. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.24.85 
Benzene, polypropylene de-
rivatives (CAS No. 68081– 
77–6) (provided for in sub-
heading 3902.90.00) .............
1.3% 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107675. CHLORINATED POLYOLEFIN. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.24.86 
Chlorinated polyolefin (1- 
butene, polymer with ethene 
and 1-propene, chloro- and 
tetrahydro-2,5-dioxo-3- 
furanyl-terminated) (CAS 
No. 560096–07–3) (provided 
for in subheading 
3902.90.00) ...........................
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107676. ADSORBENT RESIN. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.24.87 
Poly(divinylbenzene-co- 
ethylstyrene) (CAS No. 
9043–77–0) (provided for in 
subheading 3903.90.50) ........
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107677. VINYL CHLORIDE-HYDROXYPROPYL ACRYLATE 
COPOLYMER. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading:
3020 
‘‘ 
9902.24.88 
2-Hydroxypropyl prop-2- 
enoate (acrylate), oxiran-2- 
ylmethyl 2-methylprop-2- 
enoate (glycidyl methacry-
late), vinyl chloride copolymer 
(CAS No. 164718–75–6) 
(provided for in subheading 
3904.40.00) ...........................
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107678. VINYL CHLORIDE ETHYLENE COPOLYMER 
WITH HYDROPHIC PROPERTIES. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.24.89 
Mixtures containing by 
weight less than 70 percent 
of ethylene-vinyl chloride co-
polymer (CAS No. 25037– 
78–9) (provided for in sub-
heading 3904.40.00) .............
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107679. FLUIDS WITH BOILING POINTS ABOVE 170 °C. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.24.90 
1-Propene, 1,1,2,3,3,3- 
hexafluoro-, oxidized, polym-
erized (CAS 69991–67–9) 
(provided for in subheading 
3904.69.50), with boiling 
point above 170 °C ...............
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 
107680. 
FORMULATIONS 
OF 
FUNCTIONALIZED 
PERFLUOROPOLYETHER. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.24.91 
Ethene, 1,1,2,2-tetrafluoro-, 
oxidized, polymerized, re-
duced, fluorinated, ethyl 
esters, reduced (CAS No. 
1573124–82–9) (provided for 
in subheading 3904.69.50) ...
Free 
No change 
No change 
On or before 
12/31/2023
’’.
3021 
SEC. 107681. PERFLUOROPOLYETHER-URETHANE ACRY-
LATE. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.24.92 
Perfluoropolyether-urethane 
acrylate (2-propenoic acid, 2- 
hydroxyethyl ester, reaction 
products with 5-isocyanato-1- 
(isocyanatomethyl)-1,3,3- 
trimethylcyclohexane trimer 
and reduced Me esters of re-
duced polymerized, oxidized 
tetrafluoroethylene) (CAS 
No. 918664–08–1) present in 
a quantity comprising 60 per-
cent or more but less than 70 
percent by weight, the fore-
going dissolved in 0.5 percent 
or more but less than 1 per-
cent by weight of propan-2-ol 
(isopropyl alcohol) (CAS No. 
67–63–0), 15 percent or 
more but less than 20 per-
cent by weight of ethyl ace-
tate (CAS No.141–78–6) and 
10 percent or more but less 
than 15 percent by weight of 
butyl acetate (CAS No.123– 
86–4) (provided for in sub-
heading 3904.69.50) .............
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107682. PVDF HOMOPOLYMER/PVDF/CTFE COPOLYMER 
MIXTURES. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.24.93 
Mixtures of ethene, 1,1- 
difluoro-, homopolymer (CAS 
No. 24937–79–9) and ethene, 
1-chloro-1,2,2-trifluoro-, poly-
mer with 1,1-difluoroethene 
(CAS No. 9010–75–7) (pro-
vided for in subheading 
3904.69.50) ...........................
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107683. CHEMICALLY MODIFIED PVDF. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading:
3022 
‘‘ 
9902.24.94 
Chemically modified ethene, 
1,1-difluoro-, homopolymer 
(CAS No. 24937–79–9) (pro-
vided for in subheading 
3904.69.50) ...........................
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107684. FLUOROPOLYMER, FLUOROETHYLENE-ALKYL 
VINYLETHER ALTERNATIVE COPOLYMERS. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.24.95 
Chlorotrifluoroethylene- 
cyclohexyl vinyl ether- 
hydroxybutyl vinyl ether co-
polymer in flake or powder 
form, having a glass transi-
tion temperature of 51 °C 
(CAS No. 89461–13–2) (pro-
vided for in subheading 
3904.69.50) ...........................
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107685. COPOLYMER OF VINYL ACETATE AND HIGHER 
VINYL ESTERS. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.24.96 
Mixtures containing 50 per-
cent by weight poly(vinyl ace-
tate-co-vinyl laurate) (CAS 
No. 26354–30–3) and 50 
percent by weight bis(2- 
ethylhexyl) adipate (CAS No. 
103–23–1) (provided for in 
subheading 3905.19.00) ........
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107686. FOOD-GRADE VINYL ACETATE COPOLYMER. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.24.97 
Dodecanoic acid, ethenyl 
ester, polymer with ethenyl 
acetate (CAS No. 26354–30– 
3) (provided for in sub-
heading 3905.19.00) .............
Free 
No change 
No change 
On or before 
12/31/2023
’’.
3023 
SEC. 107687. VINYL CHLORIDE ETHYLENE WITH ENHANCED 
PROPERTIES. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.24.98 
Mixtures containing by 
weight less than 75 percent 
of ethylene-vinyl acetate-vinyl 
chloride copolymer (CAS No. 
25085–46–5) (provided for in 
subheading 3905.29.00) ........
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107688. VINYL ACETATE ETHYLENE COPOLYMER WITH 
ENHANCED PROPERTIES. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.24.99 
Mixtures containing not more 
than 75 percent by weight of 
poly(ethylene-co-ethenyl ace-
tate) (CAS No. 24937–78–8), 
other than in aqueous disper-
sion (provided for in sub-
heading 3905.29.00) .............
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 
107689. 
FOOD-GRADE 
POLYVINYL 
ACETATE 
HOMOPOLYMERS. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.01 
Dodecanoic acid, ethenyl 
ester, polymer with ethenyl 
acetate (CAS No. 26354–30– 
3) (provided for in sub-
heading 3905.29.00) .............
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107690. ACRYLIC ACID/VINYLSULPHONATE RANDOM 
COPOLYMERS. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading:
3024 
‘‘ 
9902.25.02 
Acrylic acid-sodium 
vinylsulfonate copolymers, so-
dium persulfate initiated, re-
action product with 
tetrasodium vinylidene 
diphosphonic acid (CAS No. 
397256–50–7) (provided for 
in subheading 3905.91.50) ...
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 
107691. 
POLY(METHYL 
METHACRYLATE) 
MICRO-
SPHERES. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.03 
Poly(methyl methacrylate) 
granular or spherical micro- 
spheres, each with mean par-
ticle size of 1 to 25 μm (CAS 
No. 9011–14–7) (provided 
for in subheading 
3906.10.00) ...........................
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107692. METHYL METHACRYLATE CROSSPOLYMER 
MICROSPHERES. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.04 
Composites of methyl meth-
acrylate crosspolymer (methyl 
2-methylprop-2-enoate;2-(2- 
methylprop-2-enoyloxy)ethyl 
2-methylprop-2-enoate) (CAS 
No. 25777–71–3), entirely 
spherical micro-spheres with 
mean particle size of 1 to 25 
μm and containing 7 to 10 
percent by weight of 
dicalcium phosphate (CAS 
No. 7757–93–9) (provided 
for in subheading 
3906.10.00) ...........................
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107693. STYRENE ACRYLATE COPOLYMER WITH EN-
HANCED PROPERTIES. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading:
3025 
‘‘ 
9902.25.05 
Mixtures containing less than 
65 percent by weight of butyl 
prop-2-enoate;styrene (CAS 
No. 25767–47–9) (provided 
for in subheading 
3906.90.50) ...........................
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107694. COPOLYMER FOR DENTAL USE. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.06 
Reacted copolymer of itaconic 
and acrylic acids, containing 
by weight over 90 percent 2- 
propenoic acid polymer with 
methylenebutanedioic acid, 
and also containing ethyl ace-
tate and tetrahydrofuran 
(CAS No. 25948–33–8) (pro-
vided for in subheading 
3906.90.50) ...........................
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107695. VINYL PHOSPHONIC ACID, ACRYLIC ACID CO-
POLYMER, 20 PERCENT SOLUTION IN WATER. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.07 
2-Propenoic acid, polymer 
with p-ethenylphosphonic 
acid, 20 percent solution in 
water (CAS No. 27936–88– 
5) (provided for in sub-
heading 3906.90.50) .............
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107696. POLYACRYLATE 33. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading:
3026 
‘‘ 
9902.25.08 
Mixtures of polyacrylate 33 
(methyl methacrylate, poly-
mers with ethyl acrylate, pol-
yethylene glycol methacrylate 
C16–22-alkyl ethers and pol-
yethylene-polypropylene glycol 
methacrylate 2-(6,6- 
dimethylbicyclo[3.1.1]hept-2- 
en-2-yl)ethyl ether) (CAS No. 
1204525–16–5) and alcohols, 
C10–16, ethoxylated, sul-
fates, ammonium salts (CAS 
No. 67762–19–0) (provided 
for in subheading 
3906.90.50) ...........................
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107697. AA/AMPS COPOLYMER. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.09 
Acrylic acid-2-acrylamide-2- 
methyl propanesulfonic acid 
copolymer (prop-2-enoic 
acid;2-(prop-2- 
enoylamino)butane-2-sulfonic 
acid) (CAS No. 40623–75–4) 
in granule form, with a par-
ticle size between 250 and 
850 μm (provided for in sub-
heading 3906.90.50) .............
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107698. FLOCCULANT DRY POLYACRYLAMIDES. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.10 
Flocculant dry 
polyacrylamides (prop-2- 
enamide) (CAS No. 9003– 
05–8) (provided for in sub-
heading 3906.90.50) .............
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107699. SORBITOL, PROPYLENE OXIDE, ETHYLENE 
OXIDE POLYMER. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading:
3027 
‘‘ 
9902.25.11 
Oxirane, 2-methyl-, polymer 
with oxirane, ether with D- 
glucitol (6:1) (CAS No. 
56449–05–9) (provided for in 
subheading 3907.20.00) ........
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107700. TRIMETHOXYSILYLPROPYLCARBAMATE-TER-
MINATED POLYETHER. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.12 
Poly[oxy(methyl-1,2- 
ethanediyl)], α-(((3- 
(trimethoxysily-
l)propyl)amino)carbonyl)-ω- 
((((3- 
(trimethoxysily-
l)propyl)amino)carbonyl)oxy)- 
(CAS No. 216597–12–5) 
(provided for in subheading 
3907.20.00) ...........................
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 
107701. 
DIMETHOXY(METHYL) 
SILYLMETHYLCARBAMATE-TERMINATED 
POLYETHER. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.13 
Poly(oxy(methyl-1,2- 
ethanediyl)), α- 
((((dimethoxymethylsilyl) 
methyl)amino)carbonyl)-ω- 
(((((dimethoxymethylsilyl) 
methyl)amino)carbonyl)oxy)- 
(CAS No. 611222–18–5) 
(provided for in subheading 
3907.20.00) ...........................
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107702. CURING AGENT IS USED IN TWO- OR THREE- 
PARTS EPOXY SYSTEMS. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading:
3028 
‘‘ 
9902.25.14 
Polyoxypropylen glycol 
diamine ((3S,4S)-pyrrolidine- 
3,4-diol) (CAS No. 9046–10– 
0) (provided for in sub-
heading 3907.20.00) .............
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107703. POLYETHYLENE GLYCOL 450. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.15 
Poly(oxy-1,2-ethanediyl),α- 
hydro-ω-hydroxy-ethane-1,2- 
diol, ethoxylated, PEG 450 
(CAS No. 25322–68–3) (pro-
vided for in subheading 
3907.20.00) ...........................
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107704. MEDICINAL INTERMEDIATE FOR INVESTIGA-
TIONAL USE. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.16 
Poly(oxy-1,2-ethandiyl), α- 
[[(2,5-dioxo-1-pyrrolidinyl) 
oxy]carbonyl]-ω-[[(2,5-dioxo- 
1-pyrrolinyl)oxy]carbonyl]oxy- 
(di-NHS PEG40K) (CAS No. 
122375–06–8) (provided for 
in subheading 3907.20.00) ...
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107705. AQUEOUS SOLUTIONS OF CARBOXYLIC ACID- 
COPOLYMER-SALT IN WATER. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.18 
Aqueous solutions containing 
by weight more than 35 per-
cent of 2,5-furandione, poly-
mer with α-[4- 
(ethenyloxy)butyl]-ω- 
hydroxypoly(oxy-1,2- 
ethanediyl), sodium salt 
(CAS No. 250591–55–0) 
(provided for in subheading 
3907.20.00) ...........................
3% 
No change 
No change 
On or before 
12/31/2023
’’.
3029 
SEC. 107706. AQUEOUS SOLUTIONS OF A MODIFIED POLY-
MER BEARING HYDROPHILIC AND HYDRO-
PHOBIC GROUPS. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.19 
Aqueous solutions containing 
by weight more than 40 per-
cent of 2,5-furandione, poly-
mer with ethenylbenzene, 
hydrolyzed, 3- 
(dimethylamino)propyl imide, 
imide with polyethylene-poly-
propylene glycol 2- 
aminopropyl me ether, 2,2′- 
(1,2-diazenediyl)bis(2- 
methylbutanenitrile)-initiated 
(CAS No. 1062609–13–5) 
(provided for in subheading 
3907.20.00) ...........................
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107707. DIMETHYLAMINE/EPICHLOROHYDRIN/ETHYL-
ENEDIAMINE COPOLYMER. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.20 
1,2-Ethanediamine, polymer 
with 2-(chloromethyl)oxirane 
and N-methylmethanamine 
(CAS No. 42751–79–1) (pro-
vided for in subheading 
3907.30.00) ...........................
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107708. LINEAR HYDROXYL-TERMINATED ALIPHATIC 
POLYCARB DIOL. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.21 
Poly(dimethyl carbonate-co- 
1,6-hexanediol) (CAS No. 
101325–00–2) (provided for 
in subheading 3907.40.00) ...
Free 
No change 
No change 
On or before 
12/31/2023
’’.
3030 
SEC. 107709. SHORT HOLLOW PET FIBERS. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.22 
Hollow fibers of poly(ethylene 
terephthalate) (CAS No. 
25038–59–9), having a vis-
cosity number of 78 ml/g or 
higher, each fiber measuring 
0.5 mm or more but not 
more than 5 mm in length 
(provided for in subheading 
3907.61.00) ...........................
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107710. POLYTETRAHYDROFURAN. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.23 
Polytetrahydrofuran (CAS 
No. 25190–06–1) (provided 
for in subheading 
3907.99.50) ...........................
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107711. CRYSTALLINE POLYESTERS. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.24 
1,4-Benzenedicarboxylic acid, 
1,4-dimethyl ester, polymer 
with 1,4-butanediol and α- 
hydro-ω-hydroxypoly(oxy-1,4- 
butanediyl) (CAS No. 9078– 
71–1) (provided for in sub-
heading 3907.99.50) .............
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107712. LIQUID CRYSTAL POLYMERS. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.25 
1,4-Benzenedicarboxylic acid, 
polymer with 1,4-butanediol 
and α-hydro-ω- 
hydroxypoly(oxy-1,4- 
butanediyl) (CAS No. 37282– 
12–5) (provided for in sub-
heading 3907.99.50) .............
Free 
No change 
No change 
On or before 
12/31/2023
’’.
3031 
SEC. 107713. BRANCHED POLYESTERS. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.26 
1,3-Benzenedicarboxylic acid, 
polymer with 1,3-dihydro-1,3- 
dioxo-5- 
isobenzofurancarboxylic acid, 
1,4-dimethyl 1,4- 
benzenedicarboxylate, 2,2-di-
methyl-1,3-propanediol and 
1,2-ethanediol (CAS No. 
207346–22–3) (provided for 
in subheading 3907.99.50) ...
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107714. HIGH MOLECULAR WEIGHT CO-POLYESTER. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.27 
1,4-Benzenedicarboxylic acid, 
1,4-dimethyl ester, polymer 
with 1,4-butanediol and 
tricyclodecanedimethanol 
(CAS No. 490017–22–6) 
(provided for in subheading 
3907.99.50) ...........................
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107715. HIGH MOLECULAR WEIGHT CO-POLYESTER. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.28 
1,3-Benzenedicarboxylic acid 
polymer with 1,4- 
benzenedicarboxylic acid, di-
methyl ester, 1,4- 
cyclohexanedimethanol, 2,2- 
dimethyl-1,3-propanediol and 
1,2-ethanediol (CAS No. 
74239–60–4) (provided for in 
subheading 3907.99.50) ........
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107716. POLYESTER-POLYAMIDE DISPERSANTS. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading:
3032 
‘‘ 
9902.25.29 
Dodecanoic acid, reaction 
products with ethylenimine-2- 
oxepanone polymer (CAS No. 
132434–99–2) (provided for 
in subheading 3907.99.50) ...
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107717. NYLON-12 MICRO-SPHERES. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.30 
Nylon-12, entirely spherical 
micro-spheres with mean par-
ticle size of 1 to 25 μm (CAS 
No. 24937–16–4) (provided 
for in subheading 
3908.10.00) ...........................
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107718. SHORT NYLON-66 FIBERS. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.31 
Nylon 66 (CAS No. 32131– 
17–2) fiber, measuring 3.3 
decitex or more but not more 
than 22.2 decitex and having 
a fiber length each measuring 
0.5 mm or more but not over 
2 mm (provided for in sub-
heading 3908.10.00) .............
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107719. SHORT NYLON 6 FIBERS, COLORED. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.32 
Nylon 6 (CAS No. 25038– 
54–4) fibers, colored with 
pigments, measuring approxi-
mately 5.5 or more but not 
more than 22.2 decitex and 
having a fiber length each 
measuring 1 mm or more but 
not over 5 mm (provided for 
in subheading 3908.10.00) ...
Free 
No change 
No change 
On or before 
12/31/2023
’’.
3033 
SEC. 107720. SHORT TRIANGULAR NYLON 6 FIBERS. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.33 
Triangular nylon 6 (CAS No. 
25038–54–4) fibers, meas-
uring 2 or more but not more 
than 5 decitex and having a 
fiber length each measuring 
0.5 mm or more but not over 
2 mm (provided for in sub-
heading 3908.10.00) .............
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107721. SHORT STAR-SHAPED NYLON 6 FIBERS. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.34 
Star-shaped nylon 6 (CAS 
No. 25038–54–4) fibers, 
measuring 50 or more but 
not more than 200 decitex 
and having a fiber length 
each measuring 0.5 mm or 
more but not over 5 mm 
(provided for in subheading 
3908.10.00) ...........................
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107722. SHORT HEART-SHAPED NYLON 6 FIBERS. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.35 
Heart-shaped nylon 6 (CAS 
No. 25038–54–4) fibers, 
measuring 150 decitex and 
having a fiber length each 
measuring 0.5 mm or more 
but not over 2 mm (provided 
for in subheading 
3908.10.00) ...........................
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107723. PA510 POLYMER COMPOUNDS. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading:
3034 
‘‘ 
9902.25.36 
Mixtures containing 
poly(imino-1,5- 
pentanediylimino(1,10-dioxo- 
1,10-decanediyl)) PA510 
(CAS No. 105063–19–2) 
(provided for in subheading 
3908.90.70) ...........................
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107724. MXD6 POLYMER COMPOUNDS. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.37 
Compounds in which 
hexanedioic acid, polymer 
with 1,3- 
benzenedimethanamine 
(MXD6) (CAS No. 25728– 
70–1) is the predominant 
polymer resin (provided for in 
subheading 3908.90.70) ........
2.2% 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107725. PA10T POLYMER COMPOUNDS. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.38 
Compounds in which 
poly(iminocarbonyl-1,4- 
phenylenecarbonylimino-1,10- 
decanediyl) (PA10T) (CAS 
No. 24938–74–7) is the pre-
dominant polymer resin (pro-
vided for in subheading 
3908.90.70) ...........................
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107726. PA10T/10I POLYMER COMPOUNDS. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.39 
Compounds in which 
poly(iminocarbonyl-1,4- 
phenylenecarbonylimino-1,10- 
decanediyl)-co- 
(iminocarbonyl-1,3- 
phenylenecarbonylimino-1,10- 
decanediyl) (PA10T/10I) 
(CAS No. 106413–15–4) is 
the predominant polymer 
resin (provided for in sub-
heading 3908.90.70) .............
Free 
No change 
No change 
On or before 
12/31/2023
’’.
3036 
‘‘ 
9902.25.43 
Poly[oxy(methyl-1,2- 
ethanediyl)], α-hydro-ω-hy-
droxy-, polymer with 1,6- 
diisocyanatohexane (CAS No. 
9048–90–2) and cyclohexane, 
5-isocyanato-1- 
(isocyanatomethyl)-1,3,3- 
trimethyl-, (CAS No. 53880– 
05–0) (provided for in sub-
heading 3909.50.50) .............
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 
107731. 
HDI/TRIMETHYLOL 
HEXYLLACTONE 
CROSSPOLYMER MICRO-SPHERES. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.44 
Hexamethylene diisocyanate 
(HDI)/trimethylol 
hexyllactone crosspolymer 
(1,6-diisocyanatohexane;2- 
ethyl-2- 
(hydroxymethyl)propane-1,3- 
diol;oxepan-2-one) (CAS No. 
129757–76–2), entirely 
spherical micro-spheres with 
mean particle size of 1 to 25 
μm and coated with 1 to 3 
percent by weight of silica 
(CAS No. 7631–86–9) (pro-
vided for in subheading 
3909.50.50) ...........................
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 
107732. 
HDI/PPG/POLYCAPROLACTONE 
CROSSPOLYMER MICRO-SPHERES. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.45 
2-Oxepanone, polymer with 
1,6-diisocyanatohexane, 2- 
ethyl-2-(hydroxymethyl)-1,3- 
propanediol and α-hydro-ω- 
hydroxy[poly[oxy(methyl-1,2- 
ethanediyl)]] ether with D- 
glucitol (6:1) (CAS No. 
302791–95–3), entirely 
spherical micro-spheres with 
mean particle size of 3 to 25 
μm (provided for in sub-
heading 3909.50.50) .............
Free 
No change 
No change 
On or before 
12/31/2023
’’.
3037 
SEC. 107733. AROMATIC ISOCYANATE PREPOLYMER. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.46 
Isocyanic acid, 
polymethylenepolyphenylene 
ester, polymer with 2- 
methyloxirane and oxirane 
(CAS No. 67423–05–6) (pro-
vided for in subheading 
3909.50.50) ...........................
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107734. BLOCKED POLYISOCYANATE CONTAINING SOL-
VENT. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.47 
Phenol, 4,4′-(1- 
methylethylidene)bis-, poly-
mer with 1,3- 
diisocyanatomethylbenzene, 
1,1′-methylenebis[4- 
isocyanatobenzene], 2- 
methyloxirane and 2- 
methyloxirane polymer with 
oxirane ether with 1,2,3- 
propanetriol (3:1), Me Et ke-
tone oxime-blocked (CAS No. 
1334421–42–9) (provided for 
in subheading 3909.50.50) ...
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107735. POLYISOCYANATE ADDUCT FOR POWDER 
COATINGS. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.48 
1,3-Bis((5-isocyanato-1,3,3- 
trimethylcyclohexyl)methyl)- 
1,3-diazetidine-2,4- 
dione;butane-1,4-diol (CAS 
No. 72828–34–3) (provided 
for in subheading 
3909.50.50) ...........................
Free 
No change 
No change 
On or before 
12/31/2023
’’.
3038 
SEC. 107736. BLOCKED POLYISOCYANATE FOR USE IN CAN 
AND COIL APPLICATIONS. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.49 
Isocyanato-1- 
(isocyanatomethyl)-1,3,3- 
trimethylcyclohexane 
(Isophorone diisocyanante), 
homopolymer, methyl ethyl 
ketone oxime-blocked (CAS 
No. 103170–26–9) (provided 
for in subheading 
3909.50.50) ...........................
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107737. POLYDIMETHYLSILOXANE. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.50 
Polydimethylsiloxane (Di-
methyl- 
bis(trimethylsilyloxy)silane) 
(CAS No. 63148–62–9) (pro-
vided for in heading 
3910.00.00) ...........................
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107738. SILICONE RESINS. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.51 
Siloxanes and silicones, di- 
Me, polymers with Me PH 
silsesquioxanes (CAS No. 
68440–81–3) (provided for in 
heading 3910.00.00) .............
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 
107739. 
METHOXYFUNCTIONAL 
METHYL-PHENYL 
POLYSILOXANE. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading:
3039 
‘‘ 
9902.25.52 
Siloxanes and silicones, di- 
Me, polymers with PH 
silsesquioxanes, butoxy- and 
methoxy-terminated (CAS 
No. 104780–72–5) (provided 
for in heading 3910.00.00) ...
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107740. HYDROGENPOLYSILOXANE. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.53 
Dimethyl-[meth-
yl(trimethylsilyloxy)silyl]oxy- 
trimethylsilyloxysilane (CAS 
No. 68037–59–2) (provided 
for in heading 3910.00.00) ...
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107741. METHYL SILICONE RESINS. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.54 
Siloxanes and silicones, di- 
Me, polymers with Me 
silsesquioxanes, ethoxy-termi-
nated (CAS No. 68554–66– 
5) (provided for in heading 
3910.00.00) ...........................
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 
107742. 
EPOXY 
FUNCTIONAL 
POLYDIMETHYLSILOXANE. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.56 
Methoxy-methyl-[3-[3- 
(oxiran-2-yl)propoxy]propyl]- 
trimethylsilyloxysilane (CAS 
No. 68440–71–1) (provided 
for in heading 3910.00.00) ...
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107743. POLYMETHYLHYDROGENSILOXANE. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading:
3040 
‘‘ 
9902.25.57 
Poly(methylhydrosiloxane) 
(CAS No. 63148–57–2) (pro-
vided for in heading 
3910.00.00) ...........................
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107744. VINYL TERMINATED SILOXANES. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.58 
Siloxanes and silicones, di- 
Me, vinyl group-terminated 
(ethenyl-[eth-
enyl(dimethyl)silyl]oxy- 
dimethylsilane) (CAS No. 
68083–19–2) (provided for in 
heading 3910.00.00) .............
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107745. SILICONE HYBRID RESIN (SOLVENT FREE). 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.59 
Mixtures containing 85 per-
cent or more by weight of 
silsesquioxanes, Me Ph, 
methoxy-terminated, poly-
mers with epichlorohydrin, 
4,4′-(1- 
methylethyliden-
e)bis[cyclohexanol] and 
trimethyl (CAS No. 349656– 
42–4) and 10 percent or less 
by weight cyclohexanol, 4,4′- 
(1-methylethylidene)bis-, 
polymer with 2- 
(chloromethyl)oxirane (CAS 
No. 30583–72–3) (provided 
for in heading 3910.00.00) ...
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 
107746. 
HYDROGENATED 
POLYCYCLOPENTADIENE 
RESIN. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading:
3041 
‘‘ 
9902.25.60 
Hydrogenated 
polycyclopentadiene resin 
(1,3-Cyclopentadiene 
homopolymer, hydrogenated) 
(CAS No. 68132–00–3) (pro-
vided for in subheading 
3911.10.00) ...........................
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 
107747. 
WATER 
DISPERSABLE 
HDI 
BASED 
POLYISOCYANATE. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.61 
Hexane,1,6-diisocyanato-, 
homopolymer (CAS No. 
28182–81–2) and 
cyclohexane,5-isocyanato-1- 
(isocyanatomethyl)-1,3,3- 
trimethyl-,homopolymer (CAS 
No. 53880–05–0) (provided 
for in subheading 
3911.90.25) ...........................
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107748. CYANATE ESTER RESINS FOR HIGH-END ELEC-
TRONIC, AEROSPACE, AND INDUSTRIAL AP-
PLICATIONS. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.62 
Cyanic acid, C,C′-[(1- 
methylethylidene)di-4,1-phen-
ylene] ester, homopolymer 
(CAS No. 25722–66–1) (pro-
vided for in subheading 
3911.90.45) ...........................
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107749. POLYETHYLENEIMINE, COMPONENT USED IN 
MANUFACTURING MEDICAL DEVICES. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading:
3042 
‘‘ 
9902.25.63 
Polyethylenimine (CAS No. 
9002–98–6), of a kind used 
as a component for further 
manufacturing into a finished 
medical device (provided for 
in subheading 3911.90.90) ...
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107750. POLYHEXANIDE. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.64 
Poly 
(hexamethylenebiguanide) hy-
drochloride (Polyhexanide) 
(CAS No. 32289–58–0) (pro-
vided for in subheading 
3911.90.90) ...........................
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107751. ETHYLENE-NORBORNENE COPOLYMER. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.65 
Poly(ethylene-ran-(2- 
norbornene)), substantially 
amorphous, having a glass 
transition temperature less 
than 145 °C (CAS No. 
26007–43–2) (provided for in 
subheading 3911.90.90) ........
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107752. CELLULOSE POWDER. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.66 
Cellulose entirely spherical 
micro-spheres, each with 
mean particle size of 1 to 25 
μm (CAS No. 9004–34–6) 
(provided for in subheading 
3912.90.00) ...........................
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107753. POLYMALTOTRIOSE. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading:
3043 
‘‘ 
9902.25.67 
Poly[6)-α-D-glucopyranosyl- 
(1->4)-α-D-glucopyranosyl- 
(1->4)-α-D-glucopyranosyl- 
(1->] (Polymaltotriose) (CAS 
No. 9057–02–7) (provided 
for in subheading 
3913.90.20) ...........................
1.3% 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107754. CHITOSAN. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.68 
Chitosan (methyl N- 
[(2S,3R,4R,5S,6R)-5- 
[(2S,3R,4R,5S,6R)-3-amino- 
5-[(2S,3R,4R,5S,6R)-3- 
amino-5-[(2S,3R,4R,5S,6R)- 
3-amino-5- 
[(2S,3R,4R,5S,6R)-3-amino- 
5-[(2S,3R,4R,5S,6R)-3- 
amino-5-[(2S,3R,4R,5S,6R)- 
3-amino-4,5-dihydroxy-6- 
(hydroxymethyl)oxan-2- 
yl]oxy-4-hydroxy-6- 
(hydroxymethyl)oxan-2- 
yl]oxy-4-hydroxy-6- 
(hydroxymethyl)oxan-2- 
yl]oxy-4-hydroxy-6- 
(hydroxymethyl)oxan-2- 
yl]oxy-4-hydroxy-6- 
(hydroxymethyl)oxan-2- 
yl]oxy-4-hydroxy-6- 
(hydroxymethyl)oxan-2- 
yl]oxy-2-[(2R,3S,4R,5R,6S)- 
5-amino-6- 
[(2R,3S,4R,5R,6R)-5-amino- 
4,6-dihydroxy-2- 
(hydroxymethyl)oxan-3- 
yl]oxy-4-hydroxy-2- 
(hydroxymethyl)oxan-3- 
yl]oxy-4-hydroxy-6- 
(hydroxymethyl)oxan-3- 
yl]carbamate) (CAS No. 
9012–76–4) (provided for in 
subheading 3913.90.20) ........
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107755. PLASTIC DRINKING STRAWS. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.69 
Drinking straws of plastics, 
each measuring 8 mm or 
more in outside diameter and 
20 cm or more in length 
(provided for in subheading 
3917.32.00) ...........................
Free 
No change 
No change 
On or before 
12/31/2023
’’.
3044 
SEC. 107756. GARDEN HOSES. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.70 
Garden hoses of plastics, con-
structed with a grade 304 
stainless steel interlocking 
spiral band outer shell, flexi-
ble polyvinyl chloride (PVC) 
inner hose, having aluminum 
fittings with rubber grips, 
weighing not more than 2.8 
kg, the foregoing whether or 
not presented with nozzle 
(provided for in subheading 
3917.39.00) ...........................
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107757. PLASTIC FITTINGS OF PERFLUOROALKOXY. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.71 
Plastic fittings of 
perfluoroalkoxy (PFA), of a 
kind used principally with 
machines and apparatus for 
the manufacture of semi-
conductors and flat panel dis-
plays of heading 8486 (pro-
vided for in subheading 
3917.40.00, 3926.90.99 or 
3923.50.00) ...........................
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107758. LOW DENSITY POLYETHYLENE (LDPE) SHEET-
ING. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.72 
Low density sheeting of poly-
ethylene, measuring in width 
3,810 mm, gauge 0.15 mm 
and length 2,000 meters, 
translucent solid with waxy 
color as presented (provided 
for in subheading 
3920.10.00) ...........................
3.1% 
No change 
No change 
On or before 
12/31/2023
’’.
3045 
SEC. 107759. BIAXIALLY ORIENTED DIELECTRIC POLY-
PROPYLENE FILM. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.73 
Biaxially oriented dielectric 
polypropylene film, produced 
from solvent-washed low ash 
content (less than 50 ppm) 
polymer resin (CAS No. 
9003–07–0) (provided for in 
subheading 3920.20.00) ........
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 
107760. 
BIAXIALLY 
ORIENTED 
POLYPROPYLENE 
(BOPP) CAPACITOR-GRADE FILM. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.74 
Transparent coextruded biax-
ially oriented polypropylene 
film, capacitor-grade, pre-
sented in rolls of a width not 
exceeding 790 mm and of a 
thickness not exceeding 15 
μm (provided for in sub-
heading 3920.20.00) .............
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107761. POLYESTER CAPACITOR-GRADE FILM. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.75 
Transparent coextruded biax-
ially oriented polyester film, 
capacitor-grade, presented in 
roll form, of a width not ex-
ceeding 790 mm and of a 
thickness not exceeding 15 
μm (provided for in sub-
heading 3920.62.00) .............
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107762. ACID FORM MEMBRANES. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading:
3046 
‘‘ 
9902.25.76 
Membranes of short side 
chain 
(Poly(tetrafluoroethylene-co- 
perfluoro(3-oxa-4- 
pentenesulfonic acid)) (CAS 
No. 1163733–25–2) (pro-
vided for in subheading 
3920.99.20) ...........................
4.1% 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107763. MELAMINE RESIN FOAM. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.77 
Foam of thermoset melamine 
resin, measuring 1,250 mm 
or more in width, 500 mm in 
height and 1,300 mm or 
more but not more than 
3,100 mm in length, with a 
density not less than 4 and 
not more than 11 kg/m3 per 
EN ISO 845 specimen size 
250 mm3 (provided for in 
subheading 3921.19.00) ........
5.4% 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107764. INFANT BATHTUBS AND BASINS, OF PLASTICS. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.78 
Infant bathtubs and wash-
basins of plastics, each meas-
uring not over 70 cm in 
length, 48 cm in width and 
29 cm in height (provided for 
in subheading 3922.10.00) ...
3.4% 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107765. BOXES, CASES, CRATES, AND SIMILAR ARTI-
CLES OF PLASTICS. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading:
3047 
‘‘ 
9902.25.79 
Boxes, cases, crates and simi-
lar articles of plastics (pro-
vided for in subheading 
3923.10.90), the foregoing 
specially shaped or fitted for 
the conveyance of lithography 
machines,
apparatus or 
parts thereof for the manu-
facture of semiconductor de-
vices or of electronic inte-
grated circuits of subheading 
8486.20.00 or 8486.90.00
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107766. NOZZLES, BLACK, OF POLYPROPYLENE. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.80 
Nozzles of polypropylene, 
black in color, each meas-
uring 4.5 mm in inside di-
ameter, with an outer diame-
ter of 29 mm and a height of 
39.2 mm (provided for in 
subheading 3923.10.90) ........
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107767. TIP/CAP COMBINATIONS OF POLYETHYLENE. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.81 
Tips of low density poly-
ethylene, each measuring 
19.1 mm in height, with 
outer diameter of 18.4 mm, 
of a capacity of 20 ml and 
weighing not over 0.9 g; each 
such tip attached to a cap of 
high density polyethylene, 
measuring 16.2 mm, with 
outer diameter of 18.4 mm 
and weighing not over 1.3 g 
(provided for in subheading 
3923.10.90) ...........................
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107768. BOTTLES MADE OF LDPE. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading:
3048 
‘‘ 
9902.25.82 
Bottles of low density poly-
ethylene, each measuring 56 
mm in height, having an 
outer diameter of 27 mm, 
with a bottle neck having an 
outer diameter of 16.2 mm, 
of a capacity of 20 ml, weigh-
ing not over 4 g (provided for 
in subheading 3923.30.00) ...
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107769. PLASTIC NASAL IRRIGATOR CAPS FOR NETI 
POTS. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.83 
Nasal irrigator caps of plas-
tics, designed for use on ce-
ramic neti pots (provided for 
in subheading 3923.50.00) ...
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107770. TOY CHARACTER BOTTLE TOPPERS. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.84 
Three-dimensional (3D) toy 
character bottle toppers of 
plastics, each consisting of a 
threaded bottle cap, a straw- 
like sipper and a 3D chil-
dren’s toy character from 
children’s movies or television 
programs, having a diameter 
of at least 32 mm (provided 
for in subheading 
3923.50.00) ...........................
2.8% 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107771. MELAMINE PLATTERS, OTHER THAN THOSE 
PRESENTED IN SETS. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.85 
Melamine platters, other than 
those presented in sets (pro-
vided for in subheading 
3924.10.20) ...........................
Free 
No change 
No change 
On or before 
12/31/2023
’’.
3049 
SEC. 107772. MELAMINE PLATES, OTHER THAN THOSE PRE-
SENTED IN SETS. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.86 
Melamine plates, other than 
those presented in sets (pro-
vided for in subheading 
3924.10.20) ...........................
0.8% 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107773. MELAMINE BOWLS NOT PRESENTED IN SETS. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.87 
Melamine bowls, not pre-
sented in sets (provided for in 
subheading 3924.10.20) ........
0.8% 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107774. MELAMINE TRAYS NOT PRESENTED IN SETS. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.88 
Melamine trays, the foregoing 
other than those presented in 
sets (provided for in sub-
heading 3924.10.30) .............
Free 
No change 
No change 
On or before 
12/31/2023
’’. 
SEC. 107775. PLASTIC MEASURING CUPS AND SPOONS IN 
SETS. 
Subchapter II of chapter 99 is amended by inserting 
in numerical sequence the following new heading: 
‘‘ 
9902.25.89 
Measuring cups, spoons, or 
combinations thereof, the 
foregoing of plastics, de-
signed for table or kitchen 
use to measure ingredients, 
such goods presented in sets 
each containing from 4 to 12 
pieces (provided for in sub-
heading 3924.10.40) .............
Free 
No change 
No change 
On or before 
12/31/2023
’’.