1.Properties:
Appearance:light yellow or milk white powder Structure:a compound of benzoxazole type Melting point:200-202°C Solubility:hardly soluble in water,but soluble in paraffins,mineral oils and ordinary organic solvents.

2.Applications:
OB can be used for whitening thermoplastic plastics,PVC,PS,PE,PP,ABS,Acetate fier,paint,coating.printing ink,etc..It can be added at any stge in prodess for process for shitening the polymers and can give the finished products a bright bluish white glaze.

3.Directions for use and dosage:
The dosage should be 0.01-0.05% on weight of plastic.Put whitening Agent OB into plastic pellets,mix the mixture thoroughly and then carry out shaping.Fluorescent whitening Agent OB is similar to Uvitex OB made in foreign country.

4.Specifications:

5.Packaging and storing: 10kg carton or 20kg, 25kg carboard drum; or upon clients' request. Stored in cool and dry place.
6.Usage of bleaching agent OB: for blown film for PVC building material ,for color batch for color matching, for filling mother stock.