Harmonized System

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Section VI > Chapter 28 > Heading 2809

Explanatory notes

… (phosphorus (V) oxide, phosphorus pentoxide, phosphoric anhydride) (P 2 O 5 ) is obtained by combustion, in dry air, … acid, etc. Pure phosphoric acid is obtained by controlled hydration of diphosphorus pentaoxide. Phosphoric acid may be … does not include  : (a)   Other phosphorus acids and anhydrides (phosphonic acid and its anhydrides, phosphinic …

Section VI > Chapter 35 > Heading 3505

Explanatory notes

…              -     either by the degradation of starch by hydrolysis with acids or enzymes, the resulting product … Etherified starches include those containing hydroxyethyl, hydroxypropyl or carboxymethyl groups.  Esterified starches …

Section VI > Chapter 29 > Heading 2906

Explanatory notes

… or unsaturated, the structure of which is derived from the hydrocarbon perhydro-1,2-cyclopentanophenanthrene, the hydroxyl group being linked to the 3-carbon, with a methyl … OR NITROSATED DERIVATIVES Aromatic alcohols contain the hydroxyl group (-OH) linked not to the aromatic rings but to …

Section V > Chapter 26 > Heading 2612

Explanatory notes

… generally classified in this heading are : (a)   Autunite, hydrated phosphate of uranium and calcium. (b)   Brannerite, uranium titanate. (c)   Carnotite, hydrated vanadate of uranium and potassium. (d)   Coffinite, … (e)   Davidite, uranium iron titanate. (f)   Parsonsite, hydrated phosphate of uranium and lead. (g)   Pitchblende …

Section VI > Chapter 28 > Heading 2844

Section V > Chapter 27 > Heading 2710

Explanatory notes

… liquid or semi-solid, consist predominantly of non-aromatic hydrocarbons such as paraffinic, cyclanic (naphthenic). They … , etc. These are mixtures of unsaturated acyclic hydrocarbons (octylenes, nonylenes, homologues and isomers thereof, etc.) and saturated acyclic hydrocarbons.        They are obtained either by very low …

Section VI > Chapter 29 > Heading 2924

Explanatory notes

… 3 N) Primary amide Secondary amide Tertiary amide The hydrogen of the (–NH 2 ) or ( NH) groups may be substituted … Ureines are derived from urea by replacing one or more hydrogen atoms of the –NH 2 groups by alicyclic or aryl … are obtained from urea by replacing one or more of the hydrogen atoms of the –NH 2 group by acid radicals. This …

Section VI > Chapter 29 > Heading 2930

Explanatory notes

… compounds whose molecules contain, in addition to atoms of hydrogen, oxygen or nitrogen, those of metals or other … (including compound derivatives) which, apart from hydrogen, oxygen and nitrogen, only have directly linked to … (which does not exist in the free state), whether or not hydrogen atoms of the NH 2  group are substituted with alkyl …

Section VI > Chapter 28 > Heading 2840

Explanatory notes

… ‑ Disodium tetraborate (refined borax) : 2840.11 ‑ ‑ Anhydrous 2840.19 ‑ ‑ Other 2840.20 ‑ Other borates 2840.30 … borates or boric acid with sodium carbonate. Anhydrous or hydrated with 5 H 2 O or 10 H 2 O. Heated and then cooled … dyes.        There are other sodium borates (metaborates, hydrogen diborate) for laboratory uses. (2)   Ammonium …

Section VI > Chapter 38 > Heading 3824