Categories

CN2830

28 Inorganic Chemicals, Organic or Inorganic Compounds of Precious Metals, of Rare-earth Metals, of Radioactive Elements or of Isotopes

2830 (01/1988-..) Sulphides, Polysulphides, Whether or not Chemically Defined

28301000 (01/1988-..) Sodium Sulphides

28302000 (01/1988-12/2006) Zinc Sulphide

28303000 (01/1988-12/2006) Cadmium Sulphide

28309011 (01/1988-..) Sulphides of Calcium, of Antimony and of Iron

28309019 (01/1988-12/1997) Sulphides (Excl. Sodium, Zinc, Cadmium, Calcium, Antimony and Iron)

28309080 (01/1998-12/2006) Sulphides, Polysulphides, Whether or not Chemically Defined (Excl. Sulphides of Sodium, Zinc, Cadmium, Calcium, Antimony or of Iron)

28309085 (01/2012-..) Sulphides, Polysulphides, Whether or not Chemically Defined (Excl. Sulphides of Sodium, Calcium, Antimony or of Iron, and Inorganic or Organic Compounds of Mercury)

28309090 (01/1988-12/1997) Polysulphides