Methyl red ACS

Supplier: Thermo Scientific

Synonyms: 2-(4-Dimethylaminophenylazo)benzoic acid, 2-((4-(Dimethylamino)phenyl)diazenyl)benzoic acid

423970100 423970250 423971000
ACRO423970100EA 45.7 GBP
ACRO423970100 ACRO423970250 ACRO423971000
Methyl red ACS
Methyl red
Formula: C₁₅H₁₅N₃O₂
MW: 269,3 g/mol
Melting Pt: 178…182 °C
Density: 1,31 g/cm³ (20 °C)
Storage Temperature: Ambient
MDL Number: MFCD00002425
CAS Number: 493-52-7
EINECS: 207-776-1
Merck Index: 12,06199

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Specification Test Results

Appearance Dark red to brown to purple Powder
Infrared spectrum Conforms
Melting point 179 to 182 °C
Visual transition interval From pH 4.2 (pink) to pH 6.2 (yellow)
Clarity of alcohol solution Passes test
Specific optical rotation +52.0° to +62.0° (20 °C, 589 nm) (neat)

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