Fluorescent brightenerMST
C.I.357 CAS：55585-28-9
Structural formula:
Molecular formula:C40H36N12THE20That6
Relative molecular weight:1334.10 (according to1997International relative atomic mass)
Maximum UV absorption wavelength: 349±1 nm
property:Anionic, blue light
Implementation Standards：HG/T 3967-2007
Quality indicators:
project | index |
Appearance | Light yellow uniform powder |
Fluorescence intensity(Equivalent to standard)， AND：400±10 | 100±3 |
Color light | approximate |
Whiteness(Difference in whiteness from the standard product: Whiteness of the sample%orINCIE—Whiteness of standard sample%orINCIE) | ≥ -3 |
5) Mass fraction of water, % | ≤ 5.0% |
6) Fineness(pass250umAmount of residue on sieve aperture)， ％ | ≤ 0.5% |
7) mass fraction of water-insoluble matter,% | ≤ 10% |
Performance characteristics:
1. Good water solubility, soluble in3-5times the volume of boiling water, each liter of boiling water can dissolve300gDissolve in cold water150gabout.
2. Not sensitive to hard water.That2+、Mg2+Does not affect its whitening effect.
3. Anti-peroxide bleach, containing reducing agent(Hydrosulfite)Bleach
4. Acid resistance is average, whitening conditionsPH>7Better.
Product use:
1. Used for whitening cotton fiber and viscose fiber.2. Suitable for adding into white discharge printing paste.
3. Fluorescent whitening in pulp. 4. Fluorescent whitening is performed during the surface sizing process.
5. Fluorescent whitening is performed during the coating process.
Directions:(Take padding method as an example)
Padding liquid temperature95-98℃, Duration:10-20Minutes, Bath Ratio:1:20，
Steaming time approx.45Minutes, Dosage:0.1-0.5%。
Package: 10kg or 25kg carton or drum. Can also be customized according to customer needs.
transportation:Avoid collision and exposure during transportation.
Storage:It should be stored in a cool, dry and ventilated warehouse with a storage period of two years.
