2811 Inorganic acids and other inorganic oxygen compounds of non-metals; n.e.c. in heading no. 2806 to 2810

2811.11 Hydrogen fluoride (hydrofluoric acid)

• 2811.11.00.00 Hydrogen fluoride (hydrofluoric acid)4%

2811.12 Hydrogen cyanide (hydrocyanic acid)

• 2811.12.00.00 Hydrogen cyanide (hydrocyanic acid)4%

2811.19 Inorganic acids; other than hydrogen fluoride

• 2811.19.10.00 Hydrogen bromide (hydrobromic acid)Free
• Other
• 2811.19.80.40 Arsenic acid (cas rn 7778-39-4)4%
• 2811.19.80.50 Sulphamidic acid (cas rn 5329-14-6) with a purity by weight of 95 % or more, whether or not with not more than 5 % addition of the anti-caking agent silicon dioxide (cas rn 112926-00-8)4%
• 2811.19.80.60 Phosphorous acid, in solid or liquid (aqueous) forms, also denominated phosphonic acid, usually falling under chemical abstracts service ('cas') numbers 13598-36-2 and 10294-56-1. the customs and statistics (‘cus’) numbers usually corresponding to this product are 0021895-1 and 0043878-8.4%
• 2811.19.80.90 Other4%

2811.21 Carbon dioxide

• 2811.21.00.00 Carbon dioxide4%

2811.22 Silicon dioxide

• 2811.22.00.15 Amorphous silicon dioxide (cas rn 60676-86-0), - in the form of powder - of a purity by weight of 99,0 % or more - with a median grain size of 0,7 μm or more, but not more than 2,1 μm - where 70 % of the particles have a diameter of not more than 3 μm4%
• 2811.22.00.90 Other4%

2811.29 Inorganic oxygen compounds; of non-metals, n.e.c. in item no. 2811.2

• 2811.29.05.00 Sulphur dioxide4%
• Sulphur trioxide (sulphuric anhydride); diarsenic trioxide
• 2811.29.10.10 Diarsenic trioxide (cas rn 1327-53-3)4%
• 2811.29.10.90 Other4%
• 2811.29.30.00 Nitrogen oxides4%
• Other
• 2811.29.90.10 Tellurium dioxide (cas rn 7446-07-3)4%
• 2811.29.90.20 Diarsenic pentaoxide (cas rn 1303-28-2)4%
• 2811.29.90.90 Other4%