ChemicalBook Product Catalog Organic Chemistry Carboxylic acids and derivatives Carboxylic acid derivatives 1-Naphthylamine-7-sulfonic acid

1-Naphthylamine-7-sulfonic acid

1-Naphthylamine-7-sulfonic acid Basic information
Synthesis
Product Name:1-Naphthylamine-7-sulfonic acid
Synonyms:TIMTEC-BB SBB000621;SODIUM 1-NAPHTHYLAMINE-4-SULFONATE;PARA-NAPHTHIONIC ACID, NA SALT;NAPHTHIONIC ACID SODIUM SALT 0.5-WATER;NAPHTHIONIC ACID SODIUM SALT;NAPHTHYLAMINE-4-SULFONIC ACID SODIUM SALT;1-Amino-7-sulfonaphthalene;1-Aminonaphthalene-7-sulfonic acid
CAS:119-28-8
MF:C10H9NO3S
MW:223.25
EINECS:204-311-4
Product Categories:Intermediates of Dyes and Pigments;Intermediates
Mol File:119-28-8.mol
1-Naphthylamine-7-sulfonic acid Structure
1-Naphthylamine-7-sulfonic acid Chemical Properties
Melting point ≥300 °C(lit.)
Boiling point 220°C (rough estimate)
density 1.3588 (rough estimate)
refractive index 1.6500 (estimate)
storage temp. Sealed in dry,Room Temperature
solubility Aqueous Base (Slightly), DMSO (Slightly, Sonicated)
form Powder
pkapK1: 3.66 (25°C)
Merck 14,2351
BRN 2115629
InChIKeyQEZZCWMQXHXAFG-UHFFFAOYSA-N
CAS DataBase Reference119-28-8(CAS DataBase Reference)
NIST Chemistry Reference1-Naphthylamine-7-sulfonic acid(119-28-8)
EPA Substance Registry System2-Naphthalenesulfonic acid, 8-amino- (119-28-8)
Safety Information
Hazard Codes C
Risk Statements 34
Safety Statements 26-36/37/39-45
RIDADR UN 2585 8/PG 3
WGK Germany 2
TSCA Yes
HazardClass 8
PackingGroup III
HS Code 29214500
MSDS Information
ProviderLanguage
SigmaAldrich English
1-Naphthylamine-7-sulfonic acid Usage And Synthesis
Synthesis1-Naphthylamine-7-sulfonic acid can be obtained by sulfonation, nitration, neutralization, reduction and acid precipitation of naphthalene.
Chemical PropertiesBrown crystalline
Uses8-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.

UsesIntermediate of dyestuff
Application1-Naphthylamine-7-sulfonic acid can be used as a dye intermediate to prepare dyes such as direct light fast blue B2RL, direct light fast red brown RTL, and sulfur blue CV.
1-Naphthylamine-7-sulfonic acid 1-NAPHTHYLAMINE-4-SULFONIC ACID SODIUM SALT 0.5-WATER,1-NAPHTHYLAMINE-4-SULFONIC ACID SODIUM SALT AZOCARMINE B Cleve acid Ascoric Acid 1-NAPHTHYLAMINE-2-SULFONIC ACID SODIUM SALT Amlodipine Besylate 4-Amino-benzenesulfonic acid monosodium salt SULFONIC ACID 1-NAPHTHYLAMINE-4-SULFONIC ACID 4-AMINO-3 6-DISULFO-1 8-NAPHTHALIC Sodium 2-naphthalenesulfonate Direct Blue 71 LUCIFER YELLOW CH DILITHIUM SALT LUCIFER YELLOW VS DILITHIUM SALT 2-NAPHTHYLAMINE-8-SULFONIC ACID LUCIFER YELLOW CH DIPOTASSIUM SALT 1-NAPHTHYLAMINE-2-SULFONIC ACID
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