… by a constant ratio of elements. Adoption : 1995 … 7. Natural calcium bentonite mixed with small amounts (1 % to 4 … product with desirable properties that did not exist in the natural state. Application of GIR 1 and Note 1 to Chapter …
… and chlorites, unexpanded 2530.20 ‑ Kieserite, epsomite (natural magnesium sulphates) 2530.90 ‑ Other (A) EARTH … IRON OXIDES The colours classified here are usually naturally occurring clays mixed with white or coloured …