cresol red cas 1733-12-6

Cresol Redquick Details

Chemical Name: Cresol Red

CAS No: 1733-12-6

Molecular Formula: C21H17NaO5S

Molecular Weight: 404.41

Cresol RedStructure:Cresol Red Structure

Appearance: Brown powder

Assay: 99%min


Cresol Redtypical Properties

Item Specifications
Maximum absorption wavelength(nm)λ1(PH6.8)λ2(PH8.5) 432.0—436.0
Mass absorption coefficient(L/cm·g) 571.0—574.0
11 (λ1, PH6.8, dry sample)22 (λ2, PH 8.5, dry sample) 49.0—67.0100.0—132.0
PH color changing domain 6.8 (yellow) – 8.5 (red)
Alcohol dissolution test PASS
Loss on drying 3.0
Burning residue (calculated as sulphate) 0.2

Cresol RedUsage

Thermochromic materials, cosmetics, measurement of hydrophobicity of therapeutic drugs

  1. pH Indicator: Cresol Red, with CAS number 1733-12-6, is commonly employed as a pH indicator in various laboratory and industrial applications. It undergoes a color change from yellow to red over the pH range of 7.0 to 8.8, making it useful for monitoring alkalinity.
  2. Analytical Chemistry: This compound is widely used in analytical chemistry, particularly in titrations and colorimetric assays. Cresol Red assists in determining the endpoint of reactions by signaling pH changes through its distinctive color transitions.
  3. Biomedical Research: Cresol Red finds applications in biomedical research, where it is utilized to study cellular activities and pH changes within biological systems. It is often employed in cell culture and related experiments.
  4. Education: Cresol Red is commonly used in educational laboratories for teaching and demonstrating chemical principles. Its vivid color transition makes it suitable for illustrating pH changes in various chemical reactions.

Cresol RedPackaging and Shipping

Packing: 25KG/ drum

Delivery: 7-10 days after receipt the payment

Cresol RedStorage

The package is complete and lightly loaded; the warehouse is ventilated, away from open flames, high temperature, and stored separately from oxidants and acids.


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