CAS 81-16-3

2-Amino-1-naphthalenesulfonic acid

Description:

2-Amino-1-naphthalenesulfonic acid, with the CAS number 81-16-3, is an organic compound characterized by its naphthalene structure substituted with an amino group and a sulfonic acid group. This compound appears as a solid, typically in a crystalline form, and is soluble in water due to the presence of the sulfonic acid group, which enhances its polarity. It is commonly used as a dye intermediate and in the synthesis of various organic compounds. The amino group contributes to its basicity, while the sulfonic acid group imparts acidic properties, making it a zwitterionic compound under certain conditions. 2-Amino-1-naphthalenesulfonic acid is known for its role in the production of azo dyes and as a reagent in analytical chemistry. It is important to handle this compound with care, as it may pose health risks if ingested or inhaled, and appropriate safety measures should be taken during its use in laboratory settings.

Formula: C₁₀H₉NO₃S

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)

InChI key: InChIKey=GWIAAIUASRVOIA-UHFFFAOYSA-N

SMILES: S(=O)(=O)(O)C=1C2=C(C=CC1N)C=CC=C2

Synonyms:

• 1-Naphthalenesulfonic acid, 2-amino-
• 1-Sulfo-2-naphthylamine
• 2-Amino-1-naphthalenesulfonic acid
• 2-Aminonaphthalene-1-Sulfonate
• 2-Aminonaphthalene-1-Sulphonic Acid
• 2-Aminonaphthalenesulfonic acid
• 2-Naphthylamine-1-sulfonic acid
• NSC 5523
• Tobias acid

2-Amino-1-naphthalenesulfonic Acid

CAS: 81-16-3

Formula: C₁₀H₉NO₃S

Purity: >98.0%(T)(HPLC)

Color and Shape: White to Light yellow to Light orange powder to crystal

Molecular weight: 223.25

Ref: 3B-A0343

2-Aminonaphthalene-1-sulfonic acid, 97%

CAS: 81-16-3

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Sci

Formula: C₁₀H₉NO₃S

Purity: 97%

Color and Shape: Crystals or powder or crystalline powder, White to cream

Molecular weight: 223.25

Ref: 02-A18644

2-Aminonaphthalene-1-sulfonic acid

CAS: 81-16-3

Formula: C₁₀H₉NO₃S

Purity: 98%

Color and Shape: Solid

Molecular weight: 223.2484

Ref: IN-DA003GC9

2-Aminonaphthalene-1-sulfonic acid

CAS: 81-16-3

2-Aminonaphthalene-1-sulfonic acid

Purity: 98%

Molecular weight: 223.25g/mol

Ref: 54-OR93697

2-Amino-1-naphthalenesulfonic Acid

Controlled Product

CAS: 81-16-3

Applications 2-Amino-1-naphthalenesulfonic Acid has been used in the preparation of oligomeric acid azo dyes and yields a reddish orange color in the dye.
References Shah, T.B., et. al.: Int. J. Polyemric Mater., 58, 681 (2009); Smith, K., et. al.: J. Environ., Res. Development, 2, 20 (2007)

Formula: C₁₀H₉NO₃S

Color and Shape: Neat

Molecular weight: 223.25

Ref: TR-A618330

2-Aminonaphthalene-1-sulfonic acid

CAS: 81-16-3

Formula: C₁₀H₉NO₃S

Purity: 98%

Color and Shape: Solid

Molecular weight: 223.25

Ref: 10-F214822