Appearance: yellowish green crystal powder
OB-1 is used widely in the polyester fiber market. because of its excellent brightening ability, good thermal stability and compatibility with many polymers, OB-1 is effective optical brightener for many plastics.
OB-1 also used in recycled polymer to obtaining whiten effect.
OB-1 complies with regulation s for indirect food additives
Packing: 25Kg cardboard drum double lined with plastic bag