... : 90% min ISO9001:2008 approved Sodium Isobutyl Xanthate, SIBX 99.0% It is a strong collector, widely used in the flotation ... . ItemIndex AppearancePelletPowderXanthate purity %≥90.090.0Free alkali %≤0.20.2Moisture and volatile %≤4.04.0 We can also supply PAX, SEX, SBX ...