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291137 Sigma-Aldrich

2-Amino-1-naphthalenesulfonic acid

98%

Synonym: 2-Naphthylamine-1-sulfonic acid, Tobias acid

  • CAS Number 81-16-3

  • Linear Formula H2NC10H6SO3H

  • Molecular Weight 223.25

  •  Beilstein/REAXYS Number 613084

  •  EC Number 201-331-5

  •  MDL number MFCD00003988

  •  PubChem Substance ID 24857514

  •  NACRES NA.22

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Properties

Related Categories Building Blocks, Chemical Synthesis, Organic Building Blocks, Sulfonic/Sulfinic Acids, Sulfur Compounds More...
Quality Level   200
assay   98%
SMILES string   Nc1ccc2ccccc2c1S(O)(=O)=O
InChI   1S/C10H9NO3S/c11-9-6-5-7-3-1-2-4-8(7)10(9)15(12,13)14/h1-6H,11H2,(H,12,13,14)
InChI key   GWIAAIUASRVOIA-UHFFFAOYSA-N

Description

General description

2-Amino-1-naphthalenesulfonic acid is a manufacturing intermediate in the monosulfo monoazo color additive D&C Red No. 34 and its lakes.

Application

2-Amino-1-naphthalenesulfonic acid has been used in the preparation of 2-(2-naphthylamino)benzoxazole by reacting with 2-chlorobenzoxazole.

Packaging

250 g in glass bottle

Safety & Documentation

Safety Information

Personal Protective Equipment 
RIDADR 
NONH for all modes of transport
WGK Germany 
WGK 1
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable

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Protocols & Articles
Peer-Reviewed Papers
15

References

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