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Sudan Red G
Chemical compound / From Wikipedia, the free encyclopedia
Sudan Red G is a yellowish red lysochrome azo dye. It has the appearance of an odorless reddish-orange powder with melting point 225 °C. It is soluble in fats and used for coloring of fats, oils, and waxes, including the waxes used in turpentine-based polishes. It is also used in polystyrene, cellulose, and synthetic lacquers. It is insoluble in water. It is stable to temperatures of about 100–110 °C. It was formerly used as a food dye, but still appears to be used for this purpose in China. It is used in some temporary tattoos, where it can cause contact dermatitis. It is also used in hair dyes. It is a component of some newer formulas for red smoke signals and smoke-screens, together with Disperse Red 11.
Quick Facts Names, Identifiers ...
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Names | |
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Preferred IUPAC name
2-[(E)-(2-Methoxyphenyl)diazenyl]naphthalen-2-ol | |
Identifiers | |
3D model (JSmol) |
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ChEMBL | |
ChemSpider |
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ECHA InfoCard | 100.013.608 ![]() |
EC Number |
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PubChem CID |
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UNII | |
CompTox Dashboard (EPA) |
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Properties | |
C17H14N2O2 | |
Molar mass | 278.28 g/mol |
Melting point | 225 °C (437 °F; 498 K) |
Hazards | |
GHS labelling: | |
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Danger | |
H350 | |
P201, P202, P281, P308+P313, P405, P501 | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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