Tianli brand FWA (VBL)

tianli brand fwa

molecular formula:c36h34o8n12s2na2

molecular weight:872.84 (according to 1991 international relative atomic mass)

the maximum uv absorption wavelength:348nm

executive standard:gb/t10061-2004

indicators:

project indicators

1) appearance ~ yellow uniform light yellow powder

2) fluorescence intensity (e to standard), sub- 100

3) the relative intensity (as standard), the sub- 100

4) shade, (as standard) 100

5) whiteness (as standard)≥-3

6) moisture,% ≤ 5.0

7) water insoluble matter,%≤ 0.5

8) fineness (250um aperture sieve residue amount),% ≤10.0

9) 23 kinds of harmful aromatic amines limit, mg / kg found gb/t10661-2004 standards .0

features:

vbl is a two fluorescent whitening agent (triazinylamino) typical fluorescent brighteners products can be dissolved in the soft water 80 times, was the nature of anions, acid degree of ph = 6 ~ 11, the dye bath ph of 8 9 appropriate. in acidic solution, due to acid enhance the fluorescence gradually weakened, and yellow. resistant to hard water to 300ppm, resistance to free chlorine to 0.25%, intolerant of copper, iron and other metal ions, sodium hydrosulfite is stable, but not high temperature baking.it can be used with anionic surfactants or dyes, non-ionic surfactant, hydrogen peroxide using the same bath. fluorescent colors for glaucoma slightly purple (blue-purple). fluorescent brightener vbl not with cationic dyes and surfactants, synthetic resin bath first shrink used the same body.

scope:

for the paper industry, paper pulp or paint whitening, brightening. the paper product can solve the hair black, blue, hair black, not white sheet of paper cut and other issues.

how to use:

in the paper industry, with 80 times the water soluble fluorescent whitening agent added to pulp or coating, the amount of dry pulp or dry coating weight of 0.1-0.3%.

packaging:

fluorescent brightener vbl cardboard drum lined with plastic bags or covered with plastic paper bag, net weight 25kg.

transportation:

transport and impact should be to prevent exposure.

storage:

product should be stored in a cool, dry, ventilated warehouse, the storage period of two years.