Harmonized System

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Section XVI > Chapter 84 > Heading 8416

Explanatory notes

… appliances 8416.90 - Parts This heading covers a range of apparatus for the mechanical or automatic firing and … air blower). (2)   Pulverised coal burners .      These are often of large size. A jet of pulverised coal is forced into …

Section X > Chapter 48 > Heading 4805

Explanatory notes

… uncoated papers and paperboards as manufactured in the form of rolls or sheets (for dimensions, see Note 8 to this … paper or paperboard ( headings 48.09 to 48.11 ). Examples of paper and paperboard of this heading are : (1)   … They are obtained from rag or chemical pulp or a mixture thereof and may also contain synthetic or glass fibres. The …

Section VI > Chapter 38 > Heading 3815

Explanatory notes

… preparations fall broadly into two groups. (a)   Those of the first group are, in general, composed either of one or more active substances deposited on a support … metallic oxides, other metallic compounds or mixtures thereof. The metals most frequently used as such or as …

Section V > Chapter 25 > Heading 2530

Explanatory notes

… mineral substances, particularly iron oxide; because of their colouring properties, they are generally used as … Cyprus earth (green). Calcination or the mixing together of various earth colours does not affect their … heat treatment (other than calcination) designed to drive off traces of oil and water, for non‑metallurgical uses …

Section VI > Chapter 28 > Heading 2829

Explanatory notes

… and periodates.               ‑ Chlorates : 2829.11 ‑ ‑ Of sodium 2829.19 ‑ ‑ Other 2829.90 ‑ Other Subject to the … crystals (tablets); very soluble in water; readily gives off its oxygen. Often contains impurities (e.g., chlorides …

Section XIV > Chapter 71 > Heading 7102

Explanatory notes

… - - Other Diamond is a crystalline and allotropic form of carbon with, in the pure state, a very high refractive … dispersive power. It is the hardest known mineral. Because of these qualities diamond is used for making articles of adornment or ornamentation and also for industrial …

Section VI > Chapter 28 > Heading 2849

Explanatory notes

… ‑ Carbides, whether or not chemically defined. 2849.10 ‑ Of calcium 2849.20 ‑ Of silicon 2849.90 ‑ Other This heading covers : (A)  Binary …

Section VI > Chapter 28 > Heading 2814

Explanatory notes

… IV INORGANIC BASES AND OXIDES, HYDROXIDES AND PEROXIDES OF METAL GENERAL Bases are compounds characterised by a … (NH 4 + )) at the cathode. Metal oxides are compounds of a metal with oxygen. Many can combine with one or more …

Section XIII > Chapter 70 > Heading 7009

Explanatory notes

… The term “glass mirrors” applies to glass, one surface of which has been coated with metal (usually silver, … In the silvering method a dilute ammoniacal solution of silver nitrate (mixed with a reducing solution based on … is brushed on to the glass, which is then heated almost to softening point. This gives a very adherent coating of …

Section II > Chapter 13 > Heading 1301

Explanatory notes

… Lac . Lac is a resinous substance produced on several kinds of tropical trees by an insect belonging to the same family … which may solidify on contact with air. These terms are often used indiscriminately. These products have the … of electricity and acquire a negative electric charge. They soften and melt more or less completely on the application …