low price pure optical brightener brighter,whiter OB-1 (cas no.1533-45-5)
CasNo: 1533-45-5
Molecular Formula: C28H18N2O2
Appearance: GREENISH CRYSTAL POWDER
Application: improve light stability of coatings an...
DeliveryTime: Within ten working day
PackAge: 25KG Fiber Drum
Port: Qingdao,
ProductionCapacity: 100 Kilogram/Month
Purity: 98.5%
Storage: Keep container tightly closed and dry ...
Transportation: by sea or by air
LimitNum: 1 Kilogram
【Chemical Name】2,2'-(vinylenedi-p-phenylene)bisbenzoxazole
【CAS NO】1533-45-5
【Molecular Formula】C28H18N2O2
【Molecular Weight】414.5
【Structure】
Specification
TEST | UNIT | SPECIFICATION |
APPEARANCE |
| GREENISH CRYSTAL POWDER |
ASSAY | % | 98.50MIN |
VOLATILES | % | 0.50MAX |
MELTING POINT | ℃ | 350.0-360.0 |
FINENESS | MESH | 200MIN |
TGA: 0.2%(300℃) 2.2%（350℃） 19.4%（400℃）
Application
*OB-1 is high molecule Optical Brightener, Used as fluorescent whitening agent for textile fibers, molded articles and sheets.
* OB-1 offers good resistance to heat, provides exceptional whitening properties and exhibits good light fastness and low volatility.
Packing:
25KG Fiber Drum
Storage
Keep container tightly closed and dry and storage in cool place
Product Name | Optical brightener OB-1(C.I. 393) |
CAS No. | 1533-45-5 |
EINECS No. | 216-245-3 |
Other Name | 2,2'-(1,2-Ethenediyldi-4,1-phenylene) |
MF | C28H18N2O2 |
Appearance | Bright yellow / green crystalline powder |
Purity | ≥99% |
Melting point | 300~380 °C |
Volatile: | <0.5% |
Package | 20kg per carton, 25/30kg per fiber drum with PE liner, or as per the customers' requirements. |
Applications:
Mostly used in the brightening the products of synthetic fiber and plastics, it is widely used in plastic film, material of lamination moulding and injection moulding as well as preferable brightening efficiency on polyolefin, PVC, PVC foaming, TPR, EVA and PU foaming together with coating, natural lacquer, etc. It also has excellent effects on foaming plastics, especially EVA, PE foaming. |
Properties: • Colors appear more brilliant • Environmentally friendly • Excellent brightening ability • Produce a bluish tinge, masking yellowness • Whiter-than-white appearance. |
Dosage: Optical brightener OB-1 is commonly used in the amount of 0.01-0.03%, that is, each 100kg of the materials, the optical brightener OB-1 takes 10g-30g or can be adjusted according to the requirements of the product or test. |
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