### IN I TI A L R EV I EW ENG I N EERI NG RE PORT PMN : 1 4 - 0 47 8 Focu s Ready Draft 4/ 2 4/20 1 4 ENG I N EER : Au s tin \ AH PV ( kg/yr) : 

# II S U BM I TTER : Chemt ura Corpo r at i o n 

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USE : Prepo l ymer f or thermoplast i c po l yu r ethan es . I s ocyanat e FGEW = 

### 684 . O

THER USES : Analog s are used as prepolymers fo r indu ng belt s , whee l s , and s ma ll r o ll e r s . Ana l og 

## 11111111 i s u sed as a p r epolymer for 1 sea l s , gaskets,**and** 

### sma ll machi n e par ts . Analog i s u s ed a s a rubber elastomer . MSDS : Ye s Labe l: No Gen Eqpt : Eye wash bott l e w i th pure wate r, tight l y fi t t ing saf ety gogg l es , po l yv in y l alcohol or ni trile - b ut y l rubber g l oves , d u st imperv i ou s protect i ve su it . R

esp irator : In the case of dust o r ae r osol f o r mat i o n u se r esp ir ator w i t h an approved filt er . H

ea l t h Effect s : No informat i on availab l e . TLV/ PEL : None establ i shed .

Con s umer Use : No SAT (concer ns) (04/ 1 8/20 1 4) : R

e l ated Cases a n d M i se SAT I n f o : Ana l ogs : M

i grati on o gr n eg PBT rat i ng : P3 B 1 T1 PMN : P 1 B 1 T 1 . Hyd Pdt: P3B 1 T1 . H

ea l t h : 1 - 2 Derma l, Dr i n king Water, I nhalat i o n Eco : 1 No r e l eases to waterOCCUPATI ONAL EXPOSURE RATING : 2 - 3 8 NOTES & K EY

POLLUT I ON PREVEN TI ON CONSIDERAT I ONS : None . EXPOSURE - BASED REVI EW : NoIN I T I A L REV I EW ENG I N EERI NG REPORT PMN : 14 - 0 4 7 8 Manu f acturing Numbe r o f S i te s/ Locat i on : 1 

# ·- Day s/y r : 133

ENVI RONMENTAL RELEAS E S EST I MAT E SUMMARY 

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IRER Note : The d a i ly re l ease s listed for any source be l ow may coinc i de wi th d aily r e l ease s f rom t he other sources t o t he same medi um . Submi ss i on states no p r oduc t relea s e to POTW or n av i gab l e wate r way expected . The PMN is a d i s till a ti on product and i s presumab l y a li qui d as man u f ac t ured (submiss i o n l ists l i quid as phys . form), howeve r , MSDS indi cates the PMN i s an " o f f - wh ite so li d ". CEB assumes the PMN is like l y a l ow - mel ti ng so li d that so l id ifi es aft er it i s pac k aged . Submiss i on sp ec i f i es the use o f n i trogen b l anket du ring product loadi ng, there f ore, ai r r e l ease ( i nc l. du s t generation) not a ssess ed f o r th i s ope r at i on .OCCUPAT I ONAL EXPOSURE S EST I MAT E SUMMARY Tot . # o f worke r s exposed v i a assesse d r outes : 50 Basi s :Inha l at i on :

D

ermal :

Expos u re to Li q ui d a t 1 00 . 00% conce n trat ion Hi gh End : n i s neg li gib l e 

# Ill

> P otent ia l Dose Rate : 2 . 2E+3 mg/day over 80 days/yr > Li f etime Average Da i ly Dose : 4. 0E + O mg/day ove r 80 days/yr >Ave r age Da il y Dose : 7 . 0E+ O mg/day over 80 days/yr > Acu t e Po t ent i a l Dose : 3 . 2E + l mg/day over 80 days/yr Numbe r o f wor ke r s (al l s ites) w i th dermal exposure : 5 0IN I T I A L REV I EW ENG I N EERI NG REPORT PMN : 1 4 - 0 4 7 8 Process i ng/Use : Numbe r o f S i te s / Locat i on : 3 Day s /yr : 2 50 

# I

ENVI RONMENTAL R ELEAS E S EST I MAT E SUMMARY 

# -

IRER Note : The da i ly re l ease s listed for any source be l ow may coinc i de wi th daily r e l ease s f rom t he other sources t o t he same medi um . Submi ss i on doe s not provide r e l ease in f ormat i o n o n customer s i t es . CEB a s sesses uncert a i n r e l ease to wate r, in c i ne r at i o n or land . Note d i rec t wat er r e l ease may be un l i k e l y as the PMN is wat er r eactive .OCCU PAT I ONAL EXPOSURE S ESTIMATE SUMMARY Tot . # o f worke r s exposed v i a assessed r outes : 9 Bas i s :Inha l at i on : PMN is a non - volat il e , h igh - mo l ecu lar we i g h t prepolymer , a n d appear s t o a l ow - me lti ng so l id . CEB assumes that dur ing contai n er un l oadi ng , t here i s pote n t i al fo r d u st generati on and the r e f o r e wo r ker exposure t o i n h a l able dust . Expos u re to Parti cu l ate ( n on - vo l at i le) (C l ass I ) U

pper Bo u nd : > Potent i al Dose Rate : 1 . 5E + 2 mg/day over 250 days/yr > Lifet i me Average Dail y Dose : 8 . 4E - 1 mg/kg - day over 250 days/yr > Ave r age Da il y Dose : 1 . 5 E+ O mg/day over 2 5 0 days/yr > Acu t e Po t ent i a l Dose : 2 . 1E+ O mg/day over 250 days/yr Numbe r o f worke r s (al l s ites) w i th inhalat i o n exposure : 9 NOTE : The resp i rat or c l ass i s : I . Parti cu l ate ( in c l udi n g solid or l iqu i d drop l ets) . INHALATI O N MON I TORING DATA REVIEW 1) Uncert a i nty (es timate based o n model , or dat a no t spec ifi c to i n dus try) : 2)a) Expos u re l eve l > 1 mg/day? regu l a t ory limi t , Yes OR b) H azard Rating f or heal th o f 2 or g r eater ? 1 - 2 = > I n h a l ation Mon i to ri ng Data Des ired? No Dermal : Expos u re to So l id at 1 00 . 00% conce nt ration Hi gh End : Yes No

> P otent ia l Dose Rate : 3 . 1E+3 mg/day over 250 days/yr >Li f etime Average Da i ly Dose : 1 . 7E + 1 mg/day ove r 250 days/yr > Ave r age Da il y Dose : 3 . 0E+ 1 mg/day over 250 days/yr > Acu t e Po t ent i a l Dose : 4 . 4E + 1 mg/day over 250 days/yr Numbe r o f worke r s (al l s ites) w i th dermal exposure : 9

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