Optical Brightener Ob-1 C. I. 393 with Greenish and Yellowish

• Color: Yellow
• Appearance: Powder
• Transport Package: 25kg/Drum
• Specification: 25kg
• Trademark: EMPEROR
• Origin: China
• Model NO.: OB-1
• HS Code: 320420
• Production Capacity: 80000mt/Year

Product Description

Product Name: Fluorescent Whitening Agent OB-1
C.I. No.: FBA 393
Physical Form: bright yellow crystalline powder

PHYSICAL PROPERTY
Purity(%):>99.0
Melting Point(ºC): 357-359
Volatile content:(%):0.5Max
Ash content(%):0.1Max

Properties:
Solubility:Insoluble in water,but soluble in high boiling point organic solvents such as phenyl-chloride. 
Structure:a compound of diphenylethylene bisbenzoxazole type

Applications:
FWA OB-1 is especially suitable for shaping various kinds of plastics and their products under high temperature.It has an extra ideal whitening effect on polyester-cotton blend fabric.It can be used for whitening polyester melt.This whitening agent is similar to Whitex SNK,Uvitex ERT and Eastobrite OB-1 made in foreign country.

Directions for use and dosage:
The dosage should be 0.01-0.05% on weight of plastic or polyester granules.Mix the materials thoroughly before shaping of the plastic products or drawin-spinning of polyester fibers.