Amido black
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Description
A black disazo dye first discovered in 1891 by M. Hoffmann. Amido black is primarily used as a nonfluorescent stain to detect protein. It binds with amino acids to produce a blue-black color but does not stain oil paints or acrylic resins. Amido black reacts with iron to give a weaker, greener color and this variation in color is used in to detect blood in fingerprints.
Synonyms and Related Terms
CI 20470; Acid Black 1; D&C black 1; Amido Black 10B; Amidoschwarz; Naphthol blue black; Aniline blue-black
=Risks
- May form toxic gases
- Highly toxic by inhalation and ingestion
Physical and Chemical Properties
- Soluble in methanol and water.
- Composition = C22H14N6O9S2Na2
- CAS = 1064-48-8
Resources and Citations
- Wikipedia: Amido Black 10B
- E.Martin "Some Improvements in Technique of Analysis of Paint Media" Studies in Conservation 22:63-67, 1977.
- Website: http://www.coloria.net/varita.htm - chemical formula
- Colour Index International online at www.colour-index.org Comment: discoverer - CI#