m-CRESOL PURPLE excellent quality manufacturer, exporter and supplier. m-Cresol Purple is a pH indicator dye used primarily in spectrophotometric pH measurements. m-Cresol purple is acidic and hydrophobic. The useful pH ranges are 1.2 – 2.8 (red to yellow) and 7.4 – 9.0 (yellow to violet).

Technical Specifications:

C.A.S. No.	2303-01-7
M.F.	C21H18O5S
M.W.	382.43gm/mole

Specifications:

Appearance Green to Brown Powder Transition Range pH 7.4-9.0   Brownish Yellow-Violet Solubility 0.1%(50% EtOH) Clear solution Absorption maximum (0.1N NaOH) ?max 578-584nm Absorptivity 1%,1cm,(0.1 N NaOH, at ?max) 800-900 Loss On Drying (110°C) <3%

Note: This article uses material from the http://rxmarine.com/