Cresol Red

Synonym(s):o-Cresolsulfonphthalein;Cresol red;o-Cresolsulfonphthalein

CAS NO.：62625-29-0
Empirical Formula: C21H19NaO5S
Molecular Weight: 406.43
MDL number: MFCD00001618
EINECS: 263-654-8
SAFETY DATA SHEET (SDS)
Update Date: 2023-04-23 13:52:06

What is Cresol Red?

Chemical properties

Brown powder

The Uses of Cresol Red

Cresol Red sodium salt acts as a constituent of polymerase chain reaction reagent systems. It is useful as a pH indicator with color changes with pH 0.2 - pH 1.8 and pH 7.1 - 8.8. Further, it plays an important role in molecular biology reactions in place of other loading dyes.

Properties of Cresol Red

Melting point:	250 °C (dec.)(lit.)
storage temp.	Store at RT.
solubility	Solubility Soluble in water, ethanol
form	Powder
pka	1.0(at 25℃)
color	Brown
PH Range	0.2 (red) - 1.8 (yellow) and 7.2 (yellow) - 8.8 (red)
Water Solubility	SOLUBLE
λmax	425nm
Major Application	Thermochromic materials, cosmetics, measurement of hydrophobicity of therapeutic drugs
CAS DataBase Reference	62625-29-0(CAS DataBase Reference)
EPA Substance Registry System	Cresol red sodium salt (62625-29-0)

Safety information for Cresol Red

Signal word	Warning
Pictogram(s)	Exclamation Mark Irritant GHS07
GHS Hazard Statements	H302:Acute toxicity,oral H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation
Precautionary Statement Codes	P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.