Opticalbrightening agentOB              CAS:7128-64-5            C.I.No:184

Appearance:slightgreenish yellow powder
Melting Point:200-202 Degree C
Purity:≥99.5%

Mainly be used inwhitening of thermoplastic, polyvinyl chloride(PVC),polypropylene(PP), polyester fiber, paint and ink, etc.