Harmonized System
Section VI > Chapter 28 > Heading 2835
Explanatory notes
… metal salts of phosphinic (hypophosphorous) acid (H 3 PO 2 ) (heading 28.11). These are soluble in water and decompose on heating with evolution of hydrogen phosphide which ignites spontaneously. Alkali phosphinates are reducing agents. The most important are : (I) Sodium phosphinate …Section VI > Chapter 29 > Heading 2939
… Alkaloids, natural or reproduced by synthesis, and their …
Explanatory notes
… 29.39 - Alkaloids, natural or reproduced by synthesis, and their … ethers, esters and other derivatives . - Alkaloids of opium and their derivatives; salts thereof : … action. Some are obtained by synthesis. They are all more or less poisonous. This heading covers unmixed …Section VI > Chapter 28 > Heading 2833
Explanatory notes
… this heading covers the metal salts of sulphuric acid (H 2 SO 4 ) (heading 28.07), but excludes mercury sulphates which fall in heading 28.52, ammonium sulphate which, even pure, falls in heading 31.02 … Sodium hydrogen sulphate (acid sulphate) (NaHSO 4 ). This residual salt of the manufacture of nitric acid occurs in …Section VII > Chapter 40 > Heading 4001
Explanatory notes
… solution of organic and mineral substances (proteins, fatty acids and their derivatives, salts, sugars and glycosides) containing in suspension 30 % to 40 % of rubber (i.e., polyisoprene of high molecular weight). This part includes : (1) Stabilised or …Section XV > Chapter 81 > Heading 8109
Explanatory notes
… is also used in the manufacture of sheaths for nuclear fuel cartridges and of metal structures for nuclear plant. … nuclear purposes all but traces of hafnium must first be removed. …Section V > Chapter 25 > Heading 2524
Explanatory notes
… 25.24 ‑ Asbestos. 2524.10 - Crocidolite 25 24 . 9 0 - Other Asbestos is a natural … dark brown. Its main property is its resistance to fire and acids. Crocidolite is the asbestos form of riebeckite. It is …Section XI > Chapter 60 > Heading 6002
… Knitted or crocheted fabrics of a width not exceeding 30 cm, containing by weight 5 % or more of elastomeric yarn or rubber thread, other than those …