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1-(Phenylazo)-2-naphthol

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1-(Phenylazo)-2-naphthol molecular structure
Molecular structure

The Sigma-Aldrich catalog lists 3 grades and pack sizes of 1-(Phenylazo)-2-naphthol (CAS 842-07-9). Pick the code you need and request a quote for price and lead time from Klar Chem.

CAS842-07-9
Molecular formulaC16H12N2O
Molecular weight248.28 g/mol
IUPAC name1-phenyldiazenylnaphthalen-2-ol
Synonyms1-(Phenylazo)-2-naphthalenol · C.I. Solvent Yellow 14 · Grasal Orange · Ceres Orange R · Soudan I · Sudan Orange R
Safety & Hazards (GHS) Warning
Irritant Irritant Health hazard Health hazard
  • H317 May cause an allergic skin reaction
  • H341 Suspected of causing genetic defects
  • H351 Suspected of causing cancer
  • H413 May cause long lasting harmful effects to aquatic life

⚠️ For information only (source: EU CLP harmonised classification and ECHA notifications, via PubChem); not a substitute for the official Safety Data Sheet (SDS).

Catalog codes and grades

Brand Product / grade Code
Sigma SUDAN I 51383-25MG Request Quote
Sigma SUDAN I (C.I. 12055) 103624-100G
103624-25G		 Request Quote

For information only; specifications and availability are confirmed at quotation. Prices are not listed.