The professional manufcture of triphenylphosphine with good quality and price. Specification: Test Standard Results Aperiance White Crystal White Crystal Assay(GC) >99.5% 99.% Melting Point 78.5-81.5 80.7-81.2 TPPO ≤0.5 0.14 CL ≤15ppm 12ppm S ≤5ppm 4.5ppm Fe ≤10ppm 8ppm Dry Weightlessness ≤0.5 0.3 Conclusion Suitable To Standard Usage: Usage: Used in organic synthesis, also used as a polymerization initiator, Clindamycin antibiotic drugs such as raw materials.