Silicon Powder CAS No: 7440-21-3 Used to coat surfaces of cups and paddles for handling semi-conductors in the electronics industry. Not less than 99.99% purity by weight. Dark brown powder, insoluble in water.

GIR 1 & 6 Note 1(a) to Chapter 28 HSEN to Chapter 28 and to heading 2804 ECICS Text to codes 2804 & 2804 61 00 00