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Catalog Number:
22908
CAS Number:
2641-01-2
Propyl red, (Indicator, pH 4.6-6.6) 
Synonym(s):
2-(4-Dipropylaminophenylazo)benzoic acid, 4-(2-Carboxyphenylazo)-N,N-dipropylaniline
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Product Information

Propyl Red is a vibrant azo dye known for its striking red hue and versatility in various applications. This compound, with a chemical structure that includes a dipropylamino group, is widely utilized in the textile industry for dyeing fabrics, providing excellent colorfastness and stability. Its properties make it an ideal choice for applications in the production of inks, plastics, and coatings, where a bold and durable color is essential. Researchers also appreciate Propyl Red for its potential in biological studies, particularly in the development of pH indicators and as a tracer in environmental studies due to its distinct coloration.

In addition to its aesthetic appeal, Propyl Red offers unique advantages over similar compounds, such as enhanced solubility and compatibility with various substrates. This makes it a preferred option for professionals seeking reliable and effective coloring agents. Whether you are involved in manufacturing, research, or quality control, Propyl Red stands out as a valuable addition to your chemical toolkit, ensuring vibrant results across a range of applications.

Synonyms
2-(4-Dipropylaminophenylazo)benzoic acid, 4-(2-Carboxyphenylazo)-N,N-dipropylaniline
CAS Number
2641-01-2
Molecular Formula
C19H23N3O2
Molecular Weight
325.41
MDL Number
MFCD00041752
PubChem ID
75839
Melting Point
173 - 175 °C
Appearance
Reddish crystalline powder
Conditions
Store at RT
General Information
Synonyms
2-(4-Dipropylaminophenylazo)benzoic acid, 4-(2-Carboxyphenylazo)-N,N-dipropylaniline
CAS Number
2641-01-2
Molecular Formula
C19H23N3O2
Molecular Weight
325.41
MDL Number
MFCD00041752
PubChem ID
75839
Melting Point
173 - 175 °C
Appearance
Reddish crystalline 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

Propyl Red is widely utilized in research focused on:

  • Colorimetric Analysis: This compound is often used as a pH indicator in various chemical analyses, providing clear visual changes that help researchers determine acidity or alkalinity in solutions.
  • Biological Staining: In microbiology, Propyl Red serves as a vital stain for visualizing cellular structures, aiding in the identification and classification of microorganisms.
  • Textile Industry: It is employed as a dye in the textile sector, offering vibrant colors that are resistant to fading, thus enhancing the longevity and appeal of fabrics.
  • Analytical Chemistry: Researchers utilize Propyl Red in chromatography as a marker to track the movement of compounds, facilitating the separation and identification of chemical mixtures.
  • Environmental Monitoring: This compound can be used in environmental studies to detect pollutants, providing a practical tool for assessing water quality and safety.