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Optical Brightener OB–1

Product Navn	Optical brightener OB-1(C.I. 393)
CAS No.	1533-45-5
EINECS No.	216-245-3
Other Name	4,4′-Bis(2-benzoxazolyl)stilbene
Molecular Formula	C28H18N2O2
Appearance	Bright yellow / green crystalline powder
Purity	≥99%
Melting point	360~380 °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 specially good effect 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: It is commonly used i the amount of 0.02-0.05%, each 1 00kg of the materials, the optical brightener OB- 1 takes 20g-50g or can be adjusted acco rding to the requirements of the product or test.

Optisk blegemiddel OB-1