Harmonized System
Section VI > Chapter 28 > Heading 2830
… Sulphides; polysulphides, whether or not chemically defined. …
Explanatory notes
… 28.30 ‑ Sulphides; polysulphides, whether or not chemically defined. … soluble in water, sulphating in the air, or in hydrated crystals (with 9 H 2 O), colourless or greenish, according … pure or mixed with magnesia, as a pigment in the rubber industry. Co‑precipitated with barium sulphate it forms …Section XVI > Chapter 84 > Heading 8439
… Machinery for making pulp of fibrous cellulosic material or for making or …
Explanatory notes
… 84.39 ‑ Machinery for making pulp of fibrous cellulosic material or …Section VI > Chapter 29 > Heading 2915
… halides, peroxides and peroxyacids; their halogenated, sulphonated, nitrated or nitrosated derivatives. …
Explanatory notes
… be represented by the formula (RCO–) where R is an alkyl or aryl radical (methyl, ethyl, phenyl, etc.). Acyl radicals … halides, peroxides, peroxyacids, esters and salts . Sulphonic acids, which contain the group (–SO 3 H) are quite … by the formula ( RC(O)OM ) in which R is an alkyl, aryl or alkaryl radical and M is a metallic or other inorganic …Section VI > Chapter 28 > Heading 2825
Explanatory notes
… are also classified here. The most important is hydrazine sulphate , colourless crystals which are slightly soluble in cold water and … of nitromethane; colourless, deliquescent crystals, very soluble in water, melting at 33 °C, decomposing …Section XVI > Chapter 84 > Heading 8419
… Machinery, plant or laboratory equipment, whether or not electrically heated … rectifying, sterilising, pasteurising, steaming, drying, evaporating, vaporising, condensing or cooling, …