Crystal Violet, Certified

Crystal violet is used for the staining of bacteria in gram staining techniques. It is also used for the staining of plant chromosomes. Crystal Violet also helps in colorimetric measurement of cell viability.

Specifications:

Synonyms:                                                      Basic Violet 3; C.I. 42555; Hexamethylpararosaniline Chloride; Gentian Violet

CAS No:                                                           548-62-9

Chemical Formula:                                        C25H30CIN3

Formula Weight:                                            407.99

Description:                                                    Dark Green Crystals/Powder

Assay (on anhydrous basis):                         96.0 % - 100.5%

Assay (as is):                                                    > 88%

Lambda max.:                                                 589 – 594 nm

Ratio of absorbances:                                    0.98 – 1.20

Loss on Drying 105 Deg.C/1hr:                     < 7.5 %

Residue on Ignition:                                       <1.5%

Sensitivity as indicator:                                  To pass Test

Visual Transition Interval:                              From pH 0.0 (yellow) To pH 2.0 (violet)

Lead (Pb):                                                         0.003% maximum

Zinc (Zn):                                                          0.050% maximum

Alcohol-insoluble substances:                      <1.0%