2-Amino-1-naphthalenesulfonic acid

CAS Number: 81-16-3

Molecular Formula: C10H9NO3S

Purity: 2-Amino-1-naphthalenesulfonic acid 98% purity

About 2-Amino-1-naphthalenesulfonic acid

2-Amino-1-naphthalenesulfonic acid (CAS 81-16-3) serves as a critical intermediate in the synthesis of azo dyes and pigments like D&C Red No. 34, where General Industry purity is the benchmark for US-based textile and colorant manufacturers seeking to optimize their chemical processing workflows. Tobias acid has seen s...

Synonyms

2-naphthylamine-1-sulfonic acid
2-naphthylamine-1-sulfonic acid, monoammonium salt
tobias acid
81-16-3
2-aminonaphthalene-1-sulfonic acid

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2-Amino-1-naphthalenesulfonic acid Specifications

CAS Number

81-16-3

Molecular Formula

C10H9NO3S

Molecular Weight

223.25 g/mol

IUPAC Name

2-aminonaphthalene-1-sulfonic acid

Canonical SMILES

C1=CC=C2C(=C1)C=CC(=C2S(=O)(=O)O)N

InChI Key

GWIAAIUASRVOIA-UHFFFAOYSA-N

InChI

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)

HSN No

29214590

CAS Number

81-16-3

Molecular Formula

C10H9NO3S

Molecular Weight

223.25 g/mol

IUPAC Name

2-aminonaphthalene-1-sulfonic acid

Canonical SMILES

C1=CC=C2C(=C1)C=CC(=C2S(=O)(=O)O)N

InChI Key

GWIAAIUASRVOIA-UHFFFAOYSA-N

InChI

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)

HSN No

29214590

solubility

Slightly sol in cold water; more sol in hot water; very slightly sol in alcohol, ether

logP

log Kow= -1.16

Molecular Weight

223.25 g/mol

Purity

2-Amino-1-naphthalenesulfonic acid 98% purity

Dye Intermediate

A critical organic intermediate primarily used as a diazo component in the synthesis of azo dyes such as C.I. Acid Yellow 19 and C.I. Pigment Red 49 for textile and printing industries

Pigment Intermediate

A versatile building block employed in the production of specialized pigments, including the important Lithol Reds

Analytical Reagent

An essential reagent used in spectrophotometric analysis for the detection and quantification of metal ions in environmental monitoring and quality control