Optical Brightening Agent OB
Main composition
Chemical name:2,5-bis(5-tert-butyl benzoxazolyl-2'-)thiophene
C.I.No:184
CAS:7128-64-5
Formula:C26H26N2O2S
Molecular Weight:430
Technical index
Appearance:slight yellow or milk white powder
Melting Point:200～202℃
Purity:≥99.0%
Performance and Features
1.Tasteless, soluble in alkane, fat, mineral oil, paraffin and most organic solvents. The maximum absorption wavelength is 375nm (in ethanol) and the maximum emission wavelength is 435nm (in ethanol);
2.It has good whitening performance and thermal stability, less dosage and wide applications.
Mainly be used in whitening of thermoplastic, polyvinyl chloride(PVC), polypropylene (PP), polyester fiber, paint and ink, etc.
The dosage against raw materials by weight:
0.01～0.05% for PVC to improve whiteness
0.0001～0.001% for PVC to improve brightness
0.0001～0.001% for polystyrene
0.01～0.05% for ABS
0.0005～0.001% for colorless polyolefin
0.005～0.05% for white polyolefin
Packaging and Storage
Packaging with 25kg bag, 25kg carton, 500kg bag or according to customer's request.
Shelf-life:2 years, store under the room temperature. Avoid strong sunlight and wet environment.
|
TEST |
UNIT |
SPECIFICATION |
|
APPEARANCE |
|
LIGHT YELLOWISH POWDER |
|
ASSAY |
% |
98.50MIN |
|
COLOR SHADE |
|
BLUE |
|
MELTING POINT |
℃ |
201.00-205.00 |
|
FINENESS |
MESH |
100.00MIN |
|
WATER-FAST CONTENT |
% |
0.50MAX |
Our company is a professional supplier of functional material additives. Our products include antioxidants, ultraviolet absorbers, light stabilizers, photoinitiators, heat stabilizers, nucleating agents, flame retardants, polyurethane chain extenders, nano light absorbing materials, antibacterial materials, functional masterbatches, colorants etc. After years of steadfast industry accumulation and technological innovation, a relatively complete additive industry chain has been formed in the rubber and plastic industry, ink industry, coating industry, textile printing and dyeing industry, functional resin and other industries. Significant achievements have been made in the field of additives.
Please visit our website if you have any inquiry: Optical Brightening Agent OB.If you can't find materials from around the world, please let us know and we will research and produce them in our labs equipped with high technology.
Inno Pharmchem (Pharmaceutical Intermediates Manufacturers in China) is exclusively focusing on the manufacturing of API's Intermediates, such as Optical Brightening Agent OB, cas:7128-64-5 , 25-Bis(5-tert-butyl-2-benzoxazolyl)thiophene and so on. We have helped clients businesses by scaling up its pharmaceutical products through the development of innovative processes and optimizing the production process thus it making it cost-efficient.
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