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Catalog Number:
01239
CAS Number:
547-58-0
Methyl orange
Grade:
ACS reagent
Synonym(s):
4-[4-(Dimethylamino)-phenylazo]benzenesulfonic acid sodium salt, Acid orange 52, CI 13025
Hazmat
Documents
$36.65 /100G
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Product Information

Methyl orange is a widely recognized pH indicator known for its vibrant color change from red to yellow as the pH transitions from acidic to neutral. This compound is particularly valuable in titrations and various laboratory applications, allowing researchers to easily determine the acidity or alkalinity of a solution. Its sensitivity to pH changes makes it an essential tool in educational settings, chemical analysis, and quality control processes in industries such as food and beverage, pharmaceuticals, and environmental monitoring.

In addition to its role as a pH indicator, methyl orange is utilized in dyeing processes and as a colorimetric reagent in analytical chemistry. Its unique properties allow for precise measurements in complex mixtures, making it a preferred choice among professionals seeking reliable results. Furthermore, methyl orange's stability and ease of use enhance its appeal, providing a practical solution for both laboratory and industrial applications.

Synonyms
4-[4-(Dimethylamino)-phenylazo]benzenesulfonic acid sodium salt, Acid orange 52, CI 13025
CAS Number
547-58-0
Grade
ACS reagent
Molecular Formula
C14H14N3O3SNa
Molecular Weight
327.3
MDL Number
MFCD00007502
Appearance
Orange-yellow solid
Conditions
Store at RT
General Information
Synonyms
4-[4-(Dimethylamino)-phenylazo]benzenesulfonic acid sodium salt, Acid orange 52, CI 13025
CAS Number
547-58-0
Grade
ACS reagent
Molecular Formula
C14H14N3O3SNa
Molecular Weight
327.3
MDL Number
MFCD00007502
Appearance
Orange-yellow solid
Conditions
Store at RT
Properties
Additional property information coming soon!
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Safety and Regulations
Hazmat
Yes
Antibiotic
No
DEA-regulated
No
Warnings
-
Applications

Methyl orange is widely utilized in research focused on:

  • pH Indicator: Commonly used in titrations, it changes color from red to yellow as the pH shifts from acidic to neutral, making it a reliable choice for chemists in laboratories.
  • Textile Industry: Employed as a dye, it provides vibrant colors for fabrics, enhancing the aesthetic appeal of clothing and home textiles.
  • Food Industry: Used as a food colorant, it helps in achieving specific hues in products, although its use is regulated in many countries due to safety concerns.
  • Biochemical Research: Serves as a model compound in studies related to azo dyes, aiding researchers in understanding dye degradation and environmental impact.
  • Educational Purposes: Frequently used in chemistry education to demonstrate acid-base reactions, helping students visualize chemical changes in real-time.

Citations