A7782

8-Amino-2-naphthalenesulfonic acid

≥97%

• Synonym(s): 1-Naphthylamine-7-sulfonic acid, Cleves acid-1,7
• Linear Formula: H₂NC₁₀H₆SO₃H
• CAS Number: 119-28-8
• Molecular Weight: 223.25
• Beilstein/REAXYS Number: 2115629
• EC Number: 204-311-4
• MDL number: MFCD00004032
• UNSPSC Code: 12352100
• PubChem Substance ID: 57653887
• NACRES: NA.22

Properties

• assay: ≥97%
• form: powder
• mp: ≥300 °C (lit.)
• SMILES string: Nc1cccc2ccc(cc12)S(O)(=O)=O
• InChI: 1S/C10H9NO3S/c11-10-3-1-2-7-4-5-8(6-9(7)10)15(12,13)14/h1-6H,11H2,(H,12,13,14)
• InChI key: QEZZCWMQXHXAFG-UHFFFAOYSA-N

Description

Application

8-Amino-2-naphthalenesulfonic acid can be used as a reactant to synthesize:

• Fe₃O₄/sulfonated polyaniline composite material via chemical oxidative polymerization with aniline in the presence of magnetite (Fe₃O₄) nanoparticles.
• Prismatic crystals of strychnine-8-ammonio-2-naphthalenesulfonate-water by heating with strychnine in water/ethanol solvent mixture.
• 5-amino-9-dialkylamino benzo[a]phenoxazine dyes (Nile blue analogs) by condensation with N-alkyl or N-sulfo-propyl 4-arylazo-substituted 3-hydroxyaniline.

Safety Information

• pictograms: GHS07
• signalword: Warning
• hcodes: H315
• pcodes: P264 - P280 - P302 + P352 - P332 + P313 - P362 + P364
• Hazard Classifications: Skin Irrit. 2
• Storage Class: 8A - Combustible corrosive hazardous materials
• wgk_germany: WGK 2
• flash_point_f: Not applicable
• flash_point_c: Not applicable
• ppe: Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges