Harmonized System

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Section V > Chapter 25 > Heading 2530

Section VI > Chapter 38 > Heading 3808

… Insecticides, rodenticides, fungicides, herbicides, anti-sprouting products and plant-growth …

Explanatory notes

… 38.08 ‑ Insecticides, rodenticides, fungicides, herbicides, anti-sprouting products and …

Section VI > Chapter 28 > Heading 2836

Explanatory notes

… carbonates) ‑ metal salts of the non‑isolated carbonic acid (H 2 CO 3 ), whose anhydride (CO 2 ) falls in heading 28.11. (II)  … these result from the action of carbon dioxide on metal peroxides. (A) CARBONATES (1)   Ammonium …

Section VI > Chapter 28 > Heading 2810

… Oxides of boron; boric acids. …

Explanatory notes

… 28.10 ‑ Oxides of boron; boric acids. (A) OXIDES OF BORON Diboron trioxide (Boron sesquioxide) (B 2 O 3 ) exists as …

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 … Sodium hydrogen sulphate (acid sulphate) (NaHSO 4 ). This residual salt of the manufacture of nitric acid occurs in … magnesium sulphate (MgSO 4 .7H 2 O) (Epsom salts, Seidlitz salts) obtained by purifying kieserite, or by the …

Section VI > Chapter 28 > Heading 2808

… Nitric acid; sulphonitric acids. …

Explanatory notes

… 28.08 ‑ Nitric acid; sulphonitric acids. (A) NITRIC ACID Nitric acid (HNO 3 ) is mainly obtained by oxidising ammonia in the presence of a catalyst (platinum, …

Section VI > Chapter 28 > Heading 2807

… Sulphuric acid; oleum. …

Explanatory notes

… 28.07 ‑ Sulphuric acid; oleum. (A) SULPHURIC ACID Sulphuric acid (H 2 SO 4 ) is mainly obtained by passing oxygen and sulphur dioxide over a catalyst (platinum, ferric oxide, vanadium …

Section XV > Chapter 81 > Heading 8105

Explanatory notes

… is mainly obtained from the ores heterogenite (hydrated oxide of cobalt), linnaeite (sulphide of cobalt and nickel) and smaltite (cobalt arsenide). When smelted, the sulphide and arsenide ores …

Section VI > Chapter 28 > Heading 2820

… Manganese oxides. …

Explanatory notes

… 28.20 ‑ Manganese oxides. 2820.10 ‑ Manganese dioxide 2820.90 ‑ Other (1)   Manganese dioxide (manganous anhydride) (MnO 2 ). The most important manganese oxide. …

Section VI > Chapter 29 > Heading 2908

Explanatory notes

… (B) SULPHONATED DERIVATIVES (1)   Phenolsulphonic acids ( HOC 6 H 4 SO 3 H ) , obtained by sulphonating phenol. (2)   Naphtholsulphonic acids , prepared by direct sulphonation of naphthols, or by … of dyes and include : (a)  1-Naphthol-4-sulphonic acid (Neville-Winther acid), brilliant transparent flakes or …