Cresol Purple

Cresol Purple Basic information
Product Name:Cresol Purple
Synonyms:M-CRESOL PURPLE, INDICATOR GRADE;M-CRESOL PURPLE FREE ACID;M-CRESOL PURPLE INDICATOR;Phenol, 4,4-(1,1-dioxido-3H-2,1-benzoxathiol-3-ylidene)bis3-methyl-;m-Cresolpurpl;M-CRESOLSULFONPHTHALEIN;M-CRESOLSULFONEPHTHALEIN;M-CRESOL PURPLE
CAS:2303-01-7
MF:C21H18O5S
MW:382.43
EINECS:218-960-6
Product Categories:Sulfonephthalein;Analytical Chemistry;Organics;Indicator (pH);pH Indicators
Mol File:2303-01-7.mol
Cresol Purple Structure
Cresol Purple Chemical Properties
Melting point >250°C
Boiling point 577.5±50.0 °C(Predicted)
density 1.404±0.06 g/cm3(Predicted)
storage temp. room temp
solubility Very slightly soluble in water, ethanol; soluble in methanol
pka1.51, 8.32(at 25℃)
form Liquid
color Dark green
PH Range1.2 (red) - 2.8 (yellow) and 7.4 (yellow) - 9.0 (purple)
Water Solubility Soluble in water and sodium hydroxide solution. Slightly soluble in alcohol.
λmax579nm, 371nm
Merck 14,2577
BRN 350314
Stability:Stable. Incompatible with strong oxidizing agents.
Major ApplicationFuel 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 SystemPhenol, 4,4'-(1,1-dioxido-3H-2,1-benzoxathiol-3-ylidene)bis[3-methyl- (2303-01-7)
Safety Information
Safety Statements 24/25
WGK Germany WGK 2 water endangering
TSCA Yes
HS Code 2934 99 90
MSDS Information
ProviderLanguage
ACROS English
ALFA English
Cresol Purple Usage And Synthesis
Chemical Propertiesgreen crystalline powder
UsesAcid-base indicator.
Usesm-Cresol Purple acts as a pH indicator dye. It plays an important role in spectrophotometric pH measurements. It operates in the pH ranges 1.2 - 2.8 (red to yellow) and 7.4 - 9.0 (yellow to violet). Further, it is employed to stain epithelial cells and proteins.
Biochem/physiol Actionsm-Cresol purple is a pH indicator. It changes from red (pH 1.2) to yellow (2.8) and yellow (7.4) to purple (9.0).
Cresol Purple Preparation Products And Raw materials
Sulfosulfuron p-(2-Methoxyethyl) phenol BROMO CRESOL PURPLE SOLUTION 100 ML Dimethyl sulfone 2,6-Dimethylphenol METHOXYPHENOL, PARA-(SG) p-Cresol Cresol M-cresol sulfonic acid 3-Methoxyphenol Cresol Purple m-Cresol 4-Methoxyphenol Amylmetacresol 3,4-Dimethylaniline BCP Bromocresol green 3-Bromophenol

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