Auramine O
- 4,4 ' -bis ( dimethylamino) - benzophenonimid hydrochloride
- C. I. 41000
- CI Solvent Yellow 34
- Basic Yellow 2
- Pyoktanin
- 2465-27-2
- 492-80-8 ( auramine -Base)
Yellow needles
Fixed
126 ° C.
265 ° C ( decomposition)
- Soluble in water: 10 g · l-1 (20 ° C)
- Soluble in acetone and ethanol
Risk
1000 mg · kg -1 ( LD50, mouse, oral)
Template: Infobox chemical / molecular formula search available
Auramine O is a dye from the group of diphenylmethane, which is used in the auramine - rhodamine stain and for the dyeing of paper, textiles and leather. It is the hydrochloride of auramine base.
Auramine O in aqueous solution
Representation and extraction
Can auramine by reaction of Michler's base are ( '-bis ( dimethylaminodiphenyl ) methane 4,4 ) with urea, sulfamic acid, sulfur and ammonia obtained at 175 ° C. Another method is the condensation of N, N- dimethyl aniline with formaldehyde and subsequent reaction with sulfur, ammonia and ammonium chloride.