Auramine O
Structural formula | |||||||||||||||||||
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A mesomeric boundary structure of the hydrochloride | |||||||||||||||||||
General | |||||||||||||||||||
Surname | Auramine O | ||||||||||||||||||
other names |
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Molecular formula | C 17 H 22 ClN 3 | ||||||||||||||||||
Brief description |
yellow needles |
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External identifiers / databases | |||||||||||||||||||
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properties | |||||||||||||||||||
Molar mass | 303.83 g mol −1 | ||||||||||||||||||
Physical state |
firmly |
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Melting point |
126 ° C |
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boiling point |
265 ° C (decomposition) |
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solubility | |||||||||||||||||||
safety instructions | |||||||||||||||||||
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MAK |
Switzerland: 0.08 mg m −3 |
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Toxicological data | |||||||||||||||||||
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . |
Auramine O is a dye from the group of diphenylmethine dyes , which is used in auramine-rhodamine dyeing and for dyeing paper, textiles and leather. It is the hydrochloride of the auramine base.
Presentation and extraction
Auramine can be obtained by reacting Michler's base [ 4,4'-bis (dimethylaminodiphenyl) methane ] with urea , amidosulfonic acid , sulfur and ammonia at 175 ° C. Another process is the condensation of N , N -dimethylaniline with formaldehyde and subsequent reaction with sulfur, ammonia and ammonium chloride .
Individual evidence
- ↑ a b Auramine and Auramine production (PDF; 282 kB).
- ↑ External identifiers of or database links to auramine base : CAS number: 492-80-8, EC number: 207-762-5, ECHA InfoCard: 100.007.057 , GESTIS substance database : 490207 , PubChem : 10298 , ChemSpider : 9876 , Wikidata : Q26840770 .
- ↑ a b c Entry on auramine hydrochloride in the GESTIS substance database of the IFA , accessed on December 29, 2019(JavaScript required) .
- ↑ a b S. D. Gangolli, Royal Society of Chemistry (Great Britain): The Dictionary of Substances and Their Effects (DOSE): Volume 01 A-B . Royal Society of Chemistry, 1999, ISBN 0-85404-808-1 , pp. 402 ( limited preview in Google Book search).
- ↑ a b c Data sheet Auramin O (PDF) from Merck , accessed on September 22, 2013.
- ↑ Entry on 4,4'-carbonimidoylbis [N, N-dimethylaniline] in the Classification and Labeling Inventory of the European Chemicals Agency (ECHA), accessed on December 29, 2019. Manufacturers or distributors can expand the harmonized classification and labeling .
- ↑ Swiss Accident Insurance Fund (Suva): Limit values - Current MAK and BAT values (search for auramine ), accessed on November 1, 2019.