1.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.
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2.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.
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| 3.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. |
| 4.Specifications: |
| Item |
Indices |
| Appearance |
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% |
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5.Packaging and storing:
Packaged in cardboard barrels,25kg or 50kg each.Stored in dry room.
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