Metanil Yellow is a synthetic azo dye commonly used in various industries. It has been widely used in textiles, paper, and leather industries. Here is a detailed specification of its chemical data and various names:

• Common Names
• Metanil Yellow
  Acid Yellow 36
  CI 13065 (Colour Index Number)
  Azo Yellow
  C.I. Acid Yellow 36
  Sodium Metanil Yellow
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• Chemical Identifiers
• CAS Number : 587-98-4
  Molecular Formula : C\({18}\)H\({14}\)N\(_3\)NaO\(_3\)S
  Molecular Weight : 375.38 g/mol
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• Synonyms
• 3-[(4-Anilinophenyl)azo]benzenesulfonic acid sodium salt
  p-(p-Anilinophenylazo)benzenesulfonic acid, sodium salt
  Benzenesulfonic acid, 3-[(4-phenylamino)phenyl]azo-, sodium salt
  CI 13065FD & C Yellow #36 (although not an approved food dye in most places)
• Physical and Chemical Properties
• Appearance : Yellow crystalline powder
  Solubility : Soluble in water and ethanol
  Melting Point : Decomposes before melting
  pH : Typically around 7 (neutral)
• Applications
• Metanil Yellow is primarily used for:
• Coloring textiles, paper, and leather
  Staining in microbiological and histological applications
  Dyeing wool, silk, and nylon