Azure B (Azure 1)

Azure B is a cationic dye that is used for the staining of chromosomes

Specifications:

Synonyms:                                                                        N,N,N’-Trimethylthionin; Azure I; Methyleneazure;          

Chemical Formula:                                                          C15H16CIN3S

Color Index No.:                                                               52010

CAS No.:                                                                             531-55-5

Formula Weight:                                                              305.83

Appearance:                                                                     Brown to Dark green or Black powder

Assay:                                                                                Minimum 75%

Solubility (0.1% Aqueous):                                              Clear blue solution

Absorptivity 1% /1cm                                                      > 1500

(at Lambda max. 645nm):

Loss on drying at 110 deg. C                                          8% maximum