01
Chemical name:4,4’-Diaminostilbene-2,2’-disulfonic acid
Structural formula:
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Chemical formula: C14H14N2O6S2
Molecular weight: 370.4
CAS NO.:81-11-8
Property:
1)Light yellow cream or powder, soluble in ethanol and ether; insoluble in water, easily soluble in alkaline solution.
2)Can be easily oxidized into red; has the property of aromatic acid or aromatic amine
Quality index:
|
Item |
Index |
|
(1)Appearance dry/wet |
light yellow powder/light yellow cream |
|
(2)Dry product total amino value(gross dry sample)% |
≥95.0 |
|
(3)Degree of pigmentation(EOD) |
≤0.12 |
|
(4)Content of alkali insolubles (gross cream )% |
≤0.08 |
|
(5)Benzyl compound(gross sample)% |
≤ 0.25 |
|
(6)Ash content% |
≤2.2 |
Main use:In the manufacture of fluorescent brighteming agent、Chrysophenine G and Direct Yellow R, also as pesticides
Packing: dry product: in 25kg woven bags or upon clients' request; wet product: in 40kg woven bag or upon clients' request.