Harmonized System

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Section VI > Chapter 28 > Heading 2809

Explanatory notes

… phosphoric acid) (H 3 PO 4 ) is obtained by the action of sulphuric acid on natural tricalcium phosphate. The … calcium dihydrogenorthophosphate, sulphur trioxide, sulphuric acid, fluorosilicic acid, etc. Pure phosphoric …

Section X > Chapter 48 > Heading 4810

Explanatory notes

… (China clay), commonly used for coating include barium sulphate, magnesium silicate, calcium carbonate, calcium sulphate, zinc oxide and powdered met a l (see the General …

Section VI > Chapter 28 > Heading 2850

Explanatory notes

… oxygen ( heading 28.11 ), halogens ( heading 28.12 ), sulphur ( heading 28.13 ), hydrogen ( heading 28.14 ), … oxygen ( heading 28.11 ), halogens ( heading 28.12 ), sulphur ( heading 28.13 ), phosphorus ( heading 28.53 ). … oxygen ( heading 28.10 ), halogens ( heading 28.12 ), sulphur ( heading 28.13 ), precious metals ( heading 28.43 …

Section XXI > Chapter 97 > Heading 9705

Explanatory notes

… but are not limited to cave paintings, frescoes, ancient sculptures in the round and reliefs, petroglyphs and carved … ceremonial regalia and ancestral and religious figures and sculptures; relics and reliquaries, shrunken heads, scalps, …

Section VI > Chapter 28 > Heading 2834

Explanatory notes

… by the same method as sodium nitrite, or by the action of sulphur dioxide on a mixture of calcium oxide and potassium …

Section VI > Chapter 29 > Heading 2912

Section VII > Chapter 39 > Heading 3907

Section VI > Chapter 38 > Heading 3809

Explanatory notes

… (linseed oil, waxes, etc.), filling agents (kaolin, barium sulphate, etc.) and preservatives (particularly zinc salts, copper sulphate and phenol). (2) Agents to produce non‑slip and … metallic salts (e.g., aluminium, ammonium, chromium or iron sulphates or acetates, potassium dichromate, antimony …

Section VII > Chapter 39

Section V > Chapter 26 > Heading 2607

Explanatory notes

… classified in this heading are : (a)   Anglesite, lead sulphate. (b)   Cerussite, lead carbonate. (c)   Galena, lead sulphide, often silver‑bearing. (d)   Pyromorphite, …

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