4,4-Diaminodiphenylethylene-2,2-disulfonic acid
China [CN] Chemical name:4,4’-Diaminostilbene-2,2’-disulfonic acidStructural formula:
Chemical formula: C14H14N2O6S2 Molecular weight: 370.4CAS NO.:81-11-8Property: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 amineQuality 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 pesticidesPacking: dry product: in 25kg woven bags or upon clients' request; wet product: in 40kg woven bag or upon clients' request.
Chemical name:4,4’-Diaminostilbene-2,2’-disulfonic acidStructural formula:Chemical formula: C14H14N2O6S2 Molecular weight: 370.4CAS NO.:81-11-8Property: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 amineQuality 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 pesticidesPacking: dry product: in 25kg woven bags or upon clients' request; wet product: in 40kg woven bag or upon clients' request.
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