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Catalog Number:
42518
CAS Number:
845-10-3
Methyl red sodium salt
Synonym(s):
4-Dimethylaminoazobenzene-2'-carboxylic acid sodium salt, Acid red 2
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$48.27 /25G
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Product Information

Methyl red sodium salt is a versatile azo dye widely recognized for its application as a pH indicator in various chemical and biological processes. This compound exhibits a distinct color change from red to yellow as the pH transitions from acidic to neutral, making it an essential tool in titrations and other analytical procedures. Its ability to provide clear visual cues allows researchers and industry professionals to monitor pH levels effectively, ensuring accurate results in laboratory settings.

In addition to its role in pH measurement, methyl red sodium salt is utilized in the textile and food industries for dyeing purposes due to its vibrant color and stability. Its compatibility with various substrates enhances its appeal for applications in quality control and product formulation. Furthermore, the compound's unique properties make it a valuable resource in microbiological studies, where it serves as a selective indicator for certain bacterial growth. With its multifaceted applications, methyl red sodium salt stands out as a reliable choice for professionals seeking precision and versatility in their work.

Synonyms
4-Dimethylaminoazobenzene-2'-carboxylic acid sodium salt, Acid red 2
CAS Number
845-10-3
Molecular Formula
C15H14N3NaO2
Molecular Weight
291.28
MDL Number
MFCD00002426
PubChem ID
4465632
Melting Point
179 - 182 °C
Appearance
Red to brownish yellow powder
Conditions
Store at RT
General Information
Synonyms
4-Dimethylaminoazobenzene-2'-carboxylic acid sodium salt, Acid red 2
CAS Number
845-10-3
Molecular Formula
C15H14N3NaO2
Molecular Weight
291.28
MDL Number
MFCD00002426
PubChem ID
4465632
Melting Point
179 - 182 °C
Appearance
Red to brownish yellow powder
Conditions
Store at RT
Properties
Additional property information coming soon!
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Safety and Regulations
Hazmat
No
Antibiotic
No
DEA-regulated
No
Warnings
-
Applications

Methyl red sodium salt is widely utilized in research focused on:

  • pH Indicator: Commonly used in titrations, it changes color at a pH range of 4.4 to 6.2, making it ideal for determining the acidity or alkalinity of solutions in laboratories.
  • Biological Research: Employed as a vital stain in microbiology, it helps in differentiating between viable and non-viable cells, aiding researchers in studying cell viability.
  • Textile Industry: Utilized as a dye for fabrics, it provides vibrant color while being cost-effective compared to other synthetic dyes, making it a preferred choice for manufacturers.
  • Food Industry: Used as a food additive for color stabilization, it enhances the visual appeal of products while ensuring compliance with safety regulations.
  • Pharmaceutical Applications: Acts as a pH-sensitive agent in drug formulations, ensuring the stability and efficacy of medications by maintaining the desired pH during storage and use.

Citations