Zhejiang Hongda Chemicals

4,4’-Bis[2-(2-methoxyphenyl)ethenyl]-1,1’-diphenyl. Acts as an optical brightening agent with an appearance of slight yellow powder and is mainly used in whitening of plastics such as PVC, PS, ABS... view more

Optical Brightening Agent EBF by Zhejiang Hongda Chemicals is 2,5-Bis(2-benzoxazolyl)thiophene. Acts as a whitening agent (optical brightener) with blue, white shade and good stability. It appears as a yellow greenish powder and get... view more

4,4’-bis(2,2’-cyano-phenlene)-benzene. Acts as an optical brightening agent for polyester fiber. It shows strong fluorescence with bluish color shade and an excellent fastness to sublimation. It is... view more

Optical Brightening Agent KCB by Zhejiang Hongda Chemicals acts as an optical brightening agent for synthetic fiber and plastic products, especially for EVA. It is 1,4-Bis(2-benzoxazoly)naphthalene. Optical Brightening Agent KCB gives an appearance of... view more

7-Diethylamino-4-methylcoumarin. Acts as a multipurpose brightener with an excellent whiteness, good solubility as well as compatibility. It appears as a off-white powder and is soluble in ethanol... view more