Product Name: Fluorescent Whitening Agent 31#
C.I. No.: --
Physical Form: light yellow even-sized powder
Whitening intensity: equivalent to the 100 points of the standard agent
Hue: slightly different from standard agent
Moisture content: ≤5%
Content of insoluble impurities: ≤0.5%
Fineness(quantity of residue on sieve having 180um meshes): ≤5%
Properties:
Fluorescent Whitening Agent 31# is one of the diphenylethylene triazine compounds.Its chemical structure is approximately the same as that of VBL,but is of an unsymmetrical type.31# has an anilino group in position 6 on one ring of the triazine and a metachloranilino group in position 6 on the other.This agent is a light yellow even-sized powder in the nature of anion and has a slight greenish blue tone and rather good resistance to sunlight and ageing.
Applications:
When used in synthetic washing powder,31# does not only have stronger whitening effect than VBL on the powder,but also makes it more effcient.In additon,31# has excellent whitening effect on materials such as cotton fabric,paper and Jinlun.
Directions for use and dosage:
In process of washing powder production,add 31# with a dosage of 0.1-0.4% on weight of washing powder,mix them thoroughly and then carry out pelletizing through spraying.
