- Category :
Dyestuffs and Pigments
- CAS NO : 81-11-8
- EC NO : 201-325-2
- Molecular Formula : C14H14N2O6S2
- Main Specifications :
- Synonyms : 2,2'-(1,2-Ethylenediyl)bis(5-aminobenzenesulfonic acid); Amsonic acid;4,4'-Diaminostilbene-2,2'-Disulfonic Acid;2,2'-ethene-1,2-diylbis(5-aminobenzenesulfonic acid);4,4'-Diamino-2,2'-stilbenedisulfonic acid;
Package: dry product: in 25kg woven bags
Uses : In the manufacture of fluorescent brighteming agent、Chrysophenine G and Direct Yellow R, also as pesticides
Molecular Structure:
Product description:
Chemical name:4,4’-Diaminostilbene-2,2’-disulfonic acid
Structural formula:
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.
Contact Supplier
Search Product