Contact us: +91 9550333722 040 - 40102781
Structured search
India
Choose your country
Different countries will display different contents
Try our best to find the right business for you.
My chemicalbook

Welcome back!

HomeProduct name list1-Naphthylamine-7-sulfonic acid

1-Naphthylamine-7-sulfonic acid

Synonym(s):1-Naphthylamine-7-sulfonic acid;Cleves acid-1,7

  • CAS NO.:119-28-8
  • Empirical Formula: C10H9NO3S
  • Molecular Weight: 223.25
  • MDL number: MFCD00004032
  • EINECS: 204-311-4
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2024-10-24 21:11:45
1-Naphthylamine-7-sulfonic acid Structural

What is 1-Naphthylamine-7-sulfonic acid?

Chemical properties

Brown crystalline. 1-Aminonaphthalene-7-sulfonic acid [119- 28-8]. (8-aminonaphthalene-2-sulfonic acid), 1,7-Cleve’s acid, C10H9NO3S, Mr 223.24, is 0.5 % soluble in water at 25℃ and 3 % soluble at 100 ℃. The sodium, potassium, calcium, and magnesium salts are readily soluble in water but the barium salt is only sparingly soluble. Sulfonation with oleum at 50℃ gives 1- aminonaphthalene-4,7-disulfonic acid. Alkali fusion gives 8-amino-2-naphthol, and Bucherer-type hydrolysis gives 1-hydroxynaphthalene-7-sulfonic acid.

The Uses of 1-Naphthylamine-7-sulfonic acid

Intermediate of dyestuff

The Uses of 1-Naphthylamine-7-sulfonic acid

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.

What are the applications of Application

1-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.

Properties of 1-Naphthylamine-7-sulfonic acid

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)
pka pK1: 3.66 (25°C)
form  Powder
Merck  14,2351
BRN  2115629
CAS DataBase Reference 119-28-8(CAS DataBase Reference)
NIST Chemistry Reference 1-Naphthylamine-7-sulfonic acid(119-28-8)
EPA Substance Registry System 2-Naphthalenesulfonic acid, 8-amino- (119-28-8)

Safety information for 1-Naphthylamine-7-sulfonic acid

Signal word Danger
Pictogram(s)
ghs
Corrosion
Corrosives
GHS05
GHS Hazard Statements H314:Skin corrosion/irritation
Precautionary Statement Codes P260:Do not breathe dust/fume/gas/mist/vapours/spray.
P280:Wear protective gloves/protective clothing/eye protection/face protection.
P363:Wash contaminated clothing before reuse.
P303+P361+P353:IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.
P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

Computed Descriptors for 1-Naphthylamine-7-sulfonic acid

InChIKey QEZZCWMQXHXAFG-UHFFFAOYSA-N

Related products of tetrahydrofuran

You may like

  • Sodium Naphthionate 98%
    Sodium Naphthionate 98%
    View Details
  • 8-Aminonaphthalene-2-sulfonic acid CAS 119-28-8
    8-Aminonaphthalene-2-sulfonic acid CAS 119-28-8
    119-28-8
    View Details
  • 8-Amino-2-naphthalenesulfonic Acid CAS 119-28-8
    8-Amino-2-naphthalenesulfonic Acid CAS 119-28-8
    119-28-8
    View Details
  • 8-Amino-2-naphthalenesulfonic acid CAS 119-28-8
    8-Amino-2-naphthalenesulfonic acid CAS 119-28-8
    119-28-8
    View Details
  • 1823368-42-8 98%
    1823368-42-8 98%
    1823368-42-8
    View Details
  • 2-(3-(tert-butyl)phenoxy)-2-methylpropanoic acid 1307449-08-6 98%
    2-(3-(tert-butyl)phenoxy)-2-methylpropanoic acid 1307449-08-6 98%
    1307449-08-6
    View Details
  • Ethyl 3-(furan-2-yl)-3-hydroxypropanoate 25408-95-1 98%
    Ethyl 3-(furan-2-yl)-3-hydroxypropanoate 25408-95-1 98%
    25408-95-1
    View Details
  • Lithium Clavulanate
    Lithium Clavulanate
    61177-44-4
    View Details
Statement: All products displayed on this website are only used for non medical purposes such as industrial applications or scientific research, and cannot be used for clinical diagnosis or treatment of humans or animals. They are not medicinal or edible.