Melanin (water-soluble) / acid black 2 / water-soluble aniline grey / water-soluble niclosin

English Name: nigrosine water sole; Acid Black 2； C.I. 50420； Nigrosine

Other names: Water soluble aniline ash; Water soluble niclosin; Acidic particle element; Acidic particle element NBL; Acidic dermaton NL; Acid particle Yuanqing; Dihydroindole black; Nigrosin water soluble 

CAS No.: 8005-03-6

Grade: BS

Single cell animal or bacterial background staining method: the background color should be black

Physicochemical properties: black shiny particles or blue black crystal powder. It is a mixture of sodium salt of alcohol soluble melanin sulfonation product. Soluble in water, the solution is blue purple or blue black, soluble in ethanol, the solution is blue, and almost insoluble in ether, acetone, benzene, chloroform, petroleum ether and liquid paraffin. Maximum absorption wavelength: 570nm

Purpose: biochemical research. Biological staining agents, such as staining of central nervous tissue, pancreatic tissue, cell spores, etc.

Saving: RT