m-Cresol purple indicator , 0.04%(w/v)inwater , 2303-01-7

Synonym(s):
m-Cresolsulfonphthalein;m-Cresol purple;m-Cresolsulfonphthalein, 2′,2′′-Dimethylphenolsulfonphthalein, MCP

Update time: 2022-07-08

Melting point:	>250°C
Boiling point:	577.5±50.0 °C(Predicted)
Density	1.404±0.06 g/cm3(Predicted)
bulk density	480kg/m3
storage temp.	room temp
solubility	Very slightly soluble in water, ethanol; soluble in methanol
form	Liquid
pka	1.51, 8.32(at 25℃)
color	Dark green
PH Range	1.2 (red) - 2.8 (yellow) and 7.4 (yellow) - 9.0 (purple)
Water Solubility	Soluble in water and sodium hydroxide solution. Slightly soluble in alcohol.
ε(extinction coefficient)	≥ 11000 at 295-301nm at 0.01g/L (0.01 G/L in 0.005 N NAOH in Methanol) ≥26000 at 578-584nm at 0.01g/L (in 0.005 N NAOH in Methanol) ≥8000 at 369-375nm at 0.01g/L (in 0.005 N NAOH in Methanol)
λmax	579nm, 371nm
Merck	14,2577
BRN	350314
Stability:	Stable. Incompatible with strong oxidizing agents.
Major Application	Fuel cells, sensors, display device, falsification-proof security paper, inks, correction fluid, paints, detection of electrophilic gases, lubricants, cement products, packaging system, adhesive, cosmetics, food storage, determining glucose in dialysis solution, screening of cat diseases, detecting carbohydrates, oral hygiene products
EPA Substance Registry System	Phenol, 4,4'-(1,1-dioxido-3H-2,1-benzoxathiol-3-ylidene)bis[3-methyl- (2303-01-7)

Acid-base indicator.