Coltan.
Tantalum or coltan.
Coltan, tantalite and tantalum.
Iron ore, crude oil, mercury, diesel, copper cathode, copper millbury, petcoke, steam coal, rice, sugar, wheat, rapeseed and urea.
Polarization 20 degrees C:99.80 degrees minimum Sulphated Ash Content 0.04% Max by Electrical Conduct Moisture 0.04% Max on Dry Weight Magnetic Particles 4mg/kg Max Solubility 100% Dry & Free flowing Granulometry Fine Standard ICUMSA Colour 45 ICUMSA attenuation index units. Max AS 1 PPM Max PS 2 PPM Max CU 3 PPM Max Colour Brilliant White Reducing Sugar 0.05% Max by weight in Dry Mass SO2 15mg/kg Max Heavy Metals/Toxic Max mg/kg: Arsenic0.5 Lead 0.5
Urea
Silica sand.
