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Names | |
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IUPAC name
4,4′-Diamino-2,2′-stilbenedisulfonic acid
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Preferred IUPAC name
2,2′-[(E)-Ethene-1,2-diyl]bis(5-aminobenzene-1-sulfonic acid) | |
Other names
amsonic acid
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Identifiers | |
3D model (
JSmol)
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ChemSpider | |
ECHA InfoCard | 100.001.206 |
PubChem
CID
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UNII | |
CompTox Dashboard (
EPA)
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Properties | |
C14H14N2O6S2 | |
Molar mass | 370.40 |
Appearance | white solid |
Except where otherwise noted, data are given for materials in their
standard state (at 25 °C [77 °F], 100 kPa).
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4,4′-Diamino-2,2′-stilbenedisulfonic acid is the organic compound with the formula (H2NC6H3SO3H)2C2H2. It is a white, water-soluble solid. Structurally, it is a derivative of trans- stilbene, containing amino and sulfonic acid functional groups on each of the two phenyl rings.
The compound is a popular optical brightener for use in laundry detergents.
It is produced by reduction of 4,4′-dinitro-2,2′-stilbenedisulfonic acid with iron powder. [1]