... Residue on sieve ),% ≤0.1Specific gravity , g/cm32.67Melting point, oC980Losing temperature of crystal water, oC >320Refractive index1. ... Residue on sieve ),% ≤0.1Specific gravity , g/cm32.67Melting point , oC980Losing temperature of crystal water , oC >320Refractive index1. ... If the customer to specific indexes have special requirements .can according to requirements of products.Main packing for ...