Chemical name: 4,4’-Diaminostilbene-2,2’-disulfonic acid
Chemical formula: C14H14N2O6S2
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
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
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Index
|
|
(1)Appearance dry/wet
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light yellow powder/light yellow cream
|
|
(2)Dry product total amino value(gross dry sample)%
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≥ 95.0
|
|
(3)Degree of pigmentation(EOD)
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≤ 0.12
|
|
(4)Content of alkali insolubles (gross cream )%
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≤ 0.08
|
|
(5)Benzyl compound(gross sample)%
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≤ 0.25
|
|
(6)Ash content%
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≤ 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.
Packing: dry product: in 25kg woven bags or upon clients' request; wet product: in 40kg woven bag or upon clients' request.