Optical Brightener OB -Professional supplier
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We can supply Optical Brightener OB(CAS: 7128-64-5) with lowest factory price,high quality and regular basis.
Specification of Optical Brightener OB
| Item | Specification |
| Assay | 99.0% |
| Melting point | 196—203℃ |
| Appearance | Yellow or yellow-green crystalline powder |
| Ash content | 0.1% |
| maximum absorption spectrum wavelength | 375nm(in ethanol) |
| Maximum fluorescence emission wavelength | 435nm (in ethanol) |
| Solubility | Soluble in alkanes, fats, mineral oils, paraffin and most organic solvents. |
More About Optical Brightener OB
CAS: 7128-64-5
Standard: Technical Grade
Content: 99% Min.
Capacity:50MT/month
Loading port: Shanghai,Tianjin, Qingdao
Synonyms: 2,5-Bis(5-tert-butyl-2-benzoxazolyl)thiophene; Optical Brightener C.I.184; Optical Brightening Agent OB; Fluorescent Brightener 184
MF：C26H26N2O2S
MW: 430.56
Use Of Optical Brightener OB
Good whitening agent for PVC,PS,PE,PP,ABS, PMMA, POM, Thermoplastic, thermoset plastic, Acetate fiber, paint, coating and printing ink, etc.
Amount of Optical Brightener OB added per 100kg polymer (reference dosage):
| PVC: | Whitening: 0.01-0.05% (10-50g)
Transparent: 0.0001-0.001% (0.1-1g) (improved brightness) |
| PS: | Whitening: 0.001% (1g)
Transparent: 0.0001-0.001% (0.1-1g) |
| ABS: | Natural color: 0.01—0.05%（10g-50g）(It can effectively eliminate the inherent yellow in ABS)
Whitening: 0.01—0.05（10g-50g） |
| PE, PP: | Whitening: 0.005—0.05% （5g-50g）
Transparent: 0.0005—0.001% （0.5g-1g） |
PS: When adding any UV absorbent to the polymer, the optimal dosage of fluorescent whitening agent OB should be adjusted properly.
Package Of Optical Brightener OB
25kg/drum, or according to the customers’demand
Storage: Stored in the dry and ventilated inside storeroom, prevent direct sunlight, slightly pile and put down
