Fluorescent brightener VBL
C.I.113 CAS：12768-92-2
Structural formula:
Relative molecular weight:960.95 (according to1991International Relative Atomic Mass)
Maximum UV absorption wavelength:348 nm
Implementation standards:Q/LQH001-1997
Quality indicators:
project | Indicators |
1) Appearance | Light yellow uniform powder |
2) Strength equivalent to standard | 100 |
3) Color light | Approximate ~ micro |
4) Moisture, % | ≤ 5 |
5) Water-insoluble impurities content, % | ≤ 0.5 |
6) Fineness(pass180umResidue of aperture sieve), ％ | ≤ 10 |
Performance characteristics:
This product is easily soluble and has good acid and alkali resistance.pH4.5-7The whitening effect is significantly better thanVBLIt is anionic and can be used in the same bath with anionic or nonionic surfactants.
Scope of application:
It is mainly used for whitening of pulp, surface sizing, coating and other processes. It can also be used for whitening of cotton, linen and cellulose fiber fabrics, and brightening of light-colored fiber fabrics.
Directions:
1. Used in paper industry20Dissolve the material in water and add it to pulp or coating or surface sizing agent. The normal dosage is 1/2 of absolute dry pulp or absolute dry coating.0.1-0.3%。
2. When used for whitening cotton, linen and cellulose fibers, add the fluorescent brightener directly into the dye vat and dissolve it in water before use.0.08-0.3% Bath ratio:1：20-40 Dye bath temperature:60-100℃。
Package:10kg or 25kg carton or drum. Can be customized according to customer needs.
transportation:Handle with care, keep away from moisture and sunlight.
Storage:Store in a cool, dry place away from light, The storage period is two years.
