FOLLOWING FISSILE CHEMICAL ELEMENTS AND ISOTOPES : NATURAL URANIUM AND URANIUM ISOTOPES 233 AND 235 , PLUTONIUM AND PLUTONIUM ISOTOPES ;
( B ) THE FOLLOWING RADIO-ACTIVE CHEMICAL ELEMENTS : TECHNETIUM , PROMETHIUM , POLONIUM , ASTATINE , RADON , FRANCIUM , RADIUM , ACTINIUM , PROTACTINIUM , NEPTUNIUM , AMERICIUM AND OTHER ELEMENTS OF HIGHER ATOMIC NUMBER ;
( C ) ALL OTHER RADIO-ACTIVE ISOTOPES , NATURAL OR ARTIFICIAL , INCLUDING THOSE OF THE PRECIOUS METALS AND OF THE BASE METALS OF SECTIONS XIV AND XV ;
( D ) COMPOUNDS , INORGANIC OR ORGANIC , OF THESE ELEMENTS OR ISOTOPES , WHETHER OR NOT CHEMICALLY DEFINED AND WHETHER OR NOT MIXED TOGETHER ;
( E ) ALLOYS ( OTHER THAN FERRO-URANIUM ) , DISPERSIONS AND CERMETS , CONTAINING ANY OF THESE ELEMENTS OR ISOTOPES OR THEIR INORGANIC OR ORGANIC COMPOUNDS ;
( F ) NUCLEAR REACTOR CARTRIDGES , SPENT OR IRRADIATED .
THE TERM " ISOTOPES " MENTIONED ABOVE AND IN HEADINGS NOS 28.50 AND 28.51 INCLUDES " ENRICHED ISOTOPES " , BUT DOES NOT INCLUDE CHEMICAL ELEMENTS WHICH OCCUR IN NATURE AS PURE ISOTOPES NOR URANIUM DEPLETED IN U 235 .
7 . HEADING NO 28.55 IS TO BE TAKEN TO INCLUDE FERRO-PHOSPHORUS CONTAINING 15 % OR MORE BY WEIGHT OF PHOSPHORUS AND PHOSPHOR COPPER CONTAINING MORE THAN 8 % BY WEIGHT OF PHOSPHORUS .
28.01
8 . CHEMICAL ELEMENTS ( FOR EXAMPLE , SILICON AND SELENIUM ) DOPED FOR USE IN ELECTRONICS ARE TO BE CLASSIFIED IN THE PRESENT CHAPTER , PROVIDED THAT THEY ARE IN FORMS UNWORKED AS DRAWN , OR IN THE FORM OF CYLINDERS OR RODS . WHEN CUT IN THE FORM OF DISCS , WAFERS OR SIMILAR FORMS , THEY FALL IN HEADING NO 38.19 .
ADDITIONAL NOTE
UNLESS PROVIDED OTHERWISE , THE SALTS SPECIFIED IN SUBHEADINGS INCLUDE ACID SALTS AND BASIC SALTS .
NIMEXE CODE*CCT REFERENCE*STATISTICAL SUBDIVISION*DESCRIPTION*SITC CODE*SUPPLEMENTARY UNIT*
***I . CHEMICAL ELEMENTS***
*28.01**HALOGENS ( FLUORINE , CHLORINE , BROMINE AND IODINE ) : ***
28.01-10*A**FLUORINE*522.14* - *
28.01-30*B**CHLORINE*522.13* - *
28.01-50*C**BROMINE*522.14* - *
28.01-70*D**IODINE*522.14* - *
28.02-00*28.02**SULPHUR , SUBLIMED OR PRECIPITATED ; COLLOIDAL SULPHUR*522.15* - *
*28.03**CARBON ( INCLUDING CARBON BLACK ) : ***
28.03-10**A*METHANE BLACK*522.18* - *
28.03-20**B*ACETYLENE BLACK*522.18* - *
28.03-30**C*ANTHRACENE BLACK*522.18* - *
28.03-80**D*OTHER*522.18* - *
*28.04**HYDROGEN , RARE GASES AND OTHER NON-METALS : ***
28.04-10*A**HYDROGEN*522.11*M3*
28.04-30*B**RARE GASES*522.11*M3
*C**OTHER NON-METALS : ***
28.04-40*I**OXYGEN*522.11*M3*
28.04-50*II**SELENIUM*522.12* - *
28.04-60*III**TELLURIUM AND ARSENIC*522.12* - *
28.04-70*IV**PHOSPHORUS*522.12* - *
*V**OTHER : ***
28.04-91**A*NITROGEN*522.11*M3*
28.04-93**B*SILICON CONTAINING NOT LESS THAN 99,99 % OF SILICON*522.12* - *
28.04-95**C*OTHER SILICON*522.12* - *
28.04-97**D*BORON*522.12* - *
*28.05**ALKALI AND ALKALINE-EARTH METALS ; RARE EARTH METALS , YTTRIUM AND SCANDIUM AND INTERMIXTURES OR INTERALLOYS THEREOF ; MERCURY : ***
*A**ALKALI METALS : ***
28.05-11*I**SODIUM*522.17* - *
28.05
NIMEXE CODE*CCT REFERENCE*STATISTICAL SUBDIVISION*DESCRIPTION*SITC CODE*SUPPLEMENTARY UNIT*
*28.05 A ( CONT'D ) *****
28.05-13*II**POTASSIUM*522.17* - *
28.05-15*III**LITHIUM*522.17* - *
28.05-17*IV**CAESIUM AND RUBIDIUM*522.17* - *
28.05-30*B**ALKALINE-EARTH METALS*522.17* - *
*C**RARE EARTH METALS , YTTRIUM AND SCANDIUM AND INTERMIXTURES OR INTERALLOYS THEREOF : ***
28.05-40*IINTERMIXTURES