4-Amino-1-naphthalenesulfonicAcid , 98% , 84-86-6

Synonym(s):
1-Naphthylamine-4-sulfonic acid;Naphthionic acid

CAS NO.：84-86-6

Empirical Formula: C10H9NO3S

Molecular Weight: 223.25

MDL number: MFCD00004027

EINECS: 201-567-9

PRODUCT Properties

• Melting point: ≥300 °C(lit.)
• Boiling point: 220°C (rough estimate)
• Density: 1.67
• refractive index: 1.5250 (estimate)
• storage temp.: Store below +30°C.
• solubility: Sparingly soluble in dichloromethane. Soluble in aqueous base.
• pka: pK1: 2.81 (25°C)
• form: powder to crystal
• color: White to Light yellow to Light red
• Water Solubility: 309.9mg/L(20 ºC)
• Merck: 14,6403
• BRN: 1971299
• InChI: 1S/C10H9NO3S/c11-9-5-6-10(15(12,13)14)8-4-2-1-3-7(8)9/h1-6H,11H2,(H,12,13,14)
• InChIKey: NRZRRZAVMCAKEP-UHFFFAOYSA-N
• SMILES: Nc1ccc(c2ccccc12)S(O)(=O)=O
• CAS DataBase Reference: 84-86-6(CAS DataBase Reference)
• NIST Chemistry Reference: 4-Amino-1-naphthalene sulfonic acid(84-86-6)
• EPA Substance Registry System: 4-Amino-1-naphthalenesulfonic acid (84-86-6)

Description and Uses

Intermediate for azo dyes, e.g., Congo red. Naphthionic acid is used as an intermediate in the production of 1-hydroxynaphthalene-4-sulfonic acid, 1-aminonaphthalene-2-sulfonic acid, and 1-aminonaphthalene-4,6- and 4,7-disulfonic acids. Use as a diazo component has been previously described, e.g., C.I. Food Red 3, C.I. Food Red 7, C.I. Food Red 9, and C.I. Acid Red 25.

Safety

• Symbol(GHS): GHS05
• Signal word: Danger
• Hazard statements: H314
• Precautionary statements: P260-P280-P303+P361+P353-P305+P351+P338
• PPE: Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges
• Hazard Codes: C
• Risk Statements: 34-22
• Safety Statements: 26-36/37/39-45-25
• RIDADR: UN 2585 8/PG 3
• WGK Germany: 3
• RTECS: QK1270000
• TSCA: TSCA listed
• HazardClass: 8
• PackingGroup: III
• HS Code: 29214500
• Storage Class: 8A - Combustible corrosive hazardous materials
• Hazard Classifications: Skin Corr. 1B