Harmonized System

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Section VI > Chapter 28 > Heading 2836

Explanatory notes

… salts of the non‑isolated carbonic acid (H 2 CO 3 ), whose anhydride (CO 2 ) falls in heading 28.11. (II)  … ammonium hydrogen carbonate and ammonium carbamate (NH 2 COONH 4 ). Commercial ammonium carbonate (included in this …

Section VI > Chapter 28 > Heading 2820

Explanatory notes

… dioxide 2820.90 ‑ Other (1)   Manganese dioxide (manganous anhydride) (MnO 2 ). The most important manganese oxide. … tint of glass.        This oxide has the character of an anhydride from which the manganites of heading 28.41 are derived.           This heading does not include the anhydrous natural manganese dioxide (pyrolusite) and …

Section VI > Chapter 29 > Heading 2922

Explanatory notes

… for classification purposes. (1)   Monoethanolamine (NH 2 (CH 2 CH 2 OH))* . Rather viscous, colourless liquid; … pharmaceutical products, soap, etc. (2)   Diethanolamine (NH(CH 2 CH 2 OH) 2 ). Colourless crystals or pale liquid; … Used in organic synthesis, etc. (4)   Sarcosine (CH 3 NHCH 2 COOH). Methyl derivative of glycine; crystallises in …

Section VI > Chapter 28 > Heading 2841

Explanatory notes

… acids (corresponding to metal oxides which constitute anhydrides). The main groups of compounds covered by this … crystals, soluble in water. Transformed by heat into the anhydrous and less deliquescent dichromate (i.e., melted or …

Section VI > Chapter 29 > Heading 2932

Explanatory notes

… flavouring butter, castor oil, medicaments, etc. It also inhibits plant germination. (b)   Methylcoumarins . Same … . Obtained by the condensation of phthalic anhydride with phenol. A white or yellowish-white, odourless … ) or of thioaldehydes ( heading 29.30 ). (d)   Anhydrides of polybasic carboxylic acids and cyclic esters of …

Section VI > Chapter 28 > Heading 2840

Explanatory notes

… ‑ Disodium tetraborate (refined borax) : 2840.11 ‑ ‑ Anhydrous 2840.19 ‑ ‑ Other 2840.20 ‑ Other borates 2840.30 … Decomposed by heat to give a fusible varnish of boric anhydride; hence its use as a fire‑proofing material. Also …

Section XVI > Chapter 85 > Heading 8543

Section VI > Chapter 29 > Heading 2928

Explanatory notes

… includes their organic derivatives only . Hydrazine (H 2 NNH 2 ) may, by replacement of one or more hydrogen atoms, give derivatives, e.g. (RHNNH 2 ), and (RHNNHR 1 ), in which R and R 1  represent organic radicals. …

Section IV > Chapter 17 > Heading 1702

Explanatory notes

… ‑ ‑ Containing by weight 99 % or more lactose, expressed as anhydrous lactose, calculated on the dry matter 1702.19 ‑ ‑ … must contain by weight more than 95 % lactose, expressed as anhydrous lactose, calculated on the dry matter. For the … containing 95 % or less by weight of lactose, expressed as anhydrous lactose, calculated on the dry matter, are …

Section VI > Chapter 28 > Heading 2826

Explanatory notes

… element in an acid by a metal or by the ammonium ion (NH 4 + ). In the liquid state or in solution, they are … are : (1)   Ammonium fluorides : the neutral fluoride (NH 4 F) and the acid fluoride (NH 4 F.HF). These occur in deliquescent, colourless, toxic …