Harmonized System

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Section VI > Chapter 28 > Heading 2812

Explanatory notes

… sulphides, etc.) similar to those of the metal salts of hydracids classified in sub‑Chapter V, are actually … as : (1) A halogen with a non‑metal other than oxygen or hydrogen (halogen compounds ). (2) The same compounds as … Obtained by the same process as the monochloride, or from hydriodic acid. Yellow needles soluble in water. Specific …

Section VII > Chapter 39 > Heading 3905

Explanatory notes

… 3905.30 - Poly(vinyl alcohol), whether or not containing unhydrolysed acetate groups               - Other : 3905.91 … the C―X bond is neither a carbon-carbon bond nor a carbon-hydrogen bond. Polyvinyl ketones, where the C―X bond is a … adhesives. Poly(vinyl alcohol) is usually prepared by the hydrolysis of poly(vinyl acetate). Poly(vinyl alcohol) is …

Section VI > Chapter 38 > Heading 3823

Explanatory notes

… acids are generally manufactured by the saponification or hydrolysis of natural fats or oils.  Separation of solid … acids. (4)   Distilled fatty acids which are obtained after hydrolytic splitting of various fats and oils (e.g., coconut … Fatty acids obtained by catalytic oxidation of synthetic hydrocarbons of a high molecular weight. (7)   Acid oils …

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 ‑ ‑ … powder. Chemically pure lactose, whether anhydrous or hydrated, occurs as hard colourless crystals, which absorb … natural honey. It is usually prepared commercially by the hydrolysis of refined sucrose solutions and consists of …

Section VI > Chapter 28 > Heading 2831

Explanatory notes

… 2831.10 ‑ Of sodium 2831.90 ‑ Other Dithionites (hydrosulphites) are the salts of dithionous (“hydrosulphurous”) acid (H 2 S 2 O 4 ) which has not been … are obtained by reducing (with zinc powder) solutions of hydrogen sulphites saturated with sulphur dioxide. They are …

Section VI > Chapter 29 > Heading 2940

Explanatory notes

… minimum, must contain a potential reducing carbonyl group (aldehydic or ketonic) and at least one asymmetric carbon atom bearing a hydroxyl group and a hydrogen atom. The heading excludes  : a)    Sucrose, this, …

Section VI > Chapter 29 > Heading 2914

Explanatory notes

… 2914.39 ‑ ‑ Other 2914.40 ‑ Ketone-alcohols and ketone-aldehydes 2914.50 ‑ Ketone‑phenols and ketones with other … as a solvent for cellulose varnishes and resins. (C) KETONE‑ALDEHYDES Compounds whose molecules contain both the ketone …

Section VI > Chapter 38 > Heading 3807

Explanatory notes

… this heading.       All these tars are complex mixtures of hydrocarbons, phenols or their homologues, furfuraldehyde, … brown. They are chiefly employed (as obtained, after simple dehydration or after partial distillation) for impregnating … of wood tar. The light oils (containing aliphatic hydrocarbons, terpenes and higher ketones) are used for the …

Section VI > Chapter 28 > Heading 2846

Explanatory notes

… means that the heading will include mixtures of oxides or hydroxides of these elements or mixtures of salts having … crystals.       Cerium sulphates (cerous sulphate and its hydrates, hydrated ceric sulphate, orange‑yellow prisms …

Section VI > Chapter 28 > Heading 2828

Explanatory notes

… carbonate on calcium hypochlorite, or by treating sodium hydroxide (caustic soda) with chlorine. This salt, very soluble in water, does not exist in the anhydrous state; it is rather unstable and sensitive to heat … pulp, disinfecting premises, purifying water or preparing hydrazine. It is also used in photography as a rapid …