NEUTRAL RED INDICATOR AR

Short Name: NEUTRAL RED INDICATOR

Other Names: 3-Amino-7-dimethylamino-2-methylphenazine hydrochloride, Toluylene red, Basic Red 5

C.I.No.50040Suitable for microscopy and microbiology and supravital staining of living blood cells.

Chemical Specifications

Appearance : Dark green powder

Dye content (by spectrophotometry) : Min 60%

Transition range (pH 6.8 - 8.0) : Violet Red - Yellow

Solubility (0.1% in 50% ethanol) : Clear solution

Absorption maxima (50% ethanol + 2 ml acetic acid) : 539 - 544 nm

Absorptivity (A 1%/1cm; at λmax; in 50% ethanol + 2 ml acetic acid) : Min 900

Loss on drying (at 110°C) : Max 12%