Catalyst consisting predominantly of dinonylnaphthalenedisulphonic acid in the form of a solution in isobutanol

Catalyst, containing by weight 69 % or more but not more than 79 % of (2-hydroxy-1-methylethyl)trimethylammonium 2-ethylhexanoate

Catalyst based on aluminosilicate (zeolite), for the alkylation of aromatic hydrocarbons, for the transalkylation of alkylaromatic hydrocarbons or for the oligomerization of olefins

Catalyst, in the form of rodlets, consisting of an aluminosilicate (zeolite), containing by weight 2 % or more but not more than 3 % of rare-earth metal oxides and less than 1 % of disodium oxide

Catalyst, consisting of titanium tetrachloride and magnesium chloride, containing by weight on an oil- and hexane-free basis: - 4 % or more but not more than 10 % of titanium and - 10 % or more but not more than 20 % magnesium

Rhodococcus rhodocrous J1 bacteria, containing enzymes, suspended in a polyacrylamide gel or in water, for use as a catalyst in the production of acrylamide by the hydration of acrylonitrile

Refractory cements, mortars, concretes and similar compositions (excl. preparations based on graphite or other carbonaceous substances)

Linear alkylbenzene

Mixture of alkylbenzenes (C14-26) containing by weight: - 35 % or more but not more than 60 % of eicosylbenzene, - 25 % or more but not more than 50 % of docosylbenzene, - 5 % or more but not more than 25 % of tetracosylbenzene

Mixed alkylbenzenes and mixed alkylnaphthalenes, produced by the alkylation of benzene and naphthalene (excl. linear alkylbenzene and mixed isomers of cyclic hydrocarbons)

Mixture of alkylnaphthalenes, containing by weight: - 88 % or more but not more than 98 % of hexadecylnaphthalene - 2 % or more but not more than 12 % of dihexadecylnaphthalene

Mixture of branched alkyl benzenes mainly containing dodecyl benzenes

Mixed alkylnaphthalenes, modified with aliphatic chains, of a chain-length varying from 12 to 56 carbon atoms

Silicon doped for use in electronics, in the form of discs, wafers, cylinders, rods or similar forms, whether or not polished or with a uniform epitaxial coating (excl. elements that have been further processed, e.g. by selective diffusion)

Chemical elements and compounds doped for use in electronics, in the form of discs, wafers, cylinders, rods or similar forms, or cut into discs, wafers or similar forms, whether or not polished or with a uniform epitaxial coating (excl. elements that have been further processed, e.g. by selective diffusion, and doped silicon)