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Naphthalene-2-sulfonic acid

Naphthalene-2-sulfonic acid  Structure
Naphthalene-2-sulfonic acid
  • CAS No.120-18-3
  • Chemical Name:Naphthalene-2-sulfonic acid
  • CBNumber:CB8118079
  • Molecular Formula:C10H8O3S
  • Formula Weight:208.23
  • MOL File:120-18-3.mol
Naphthalene-2-sulfonic acid Property
  • Melting point: :124 °C
  • Boiling point: :317.43°C (rough estimate)
  • Density  :1.44 g/cm
  • refractive index  :1.4998 (estimate)
  • storage temp.  :Inert atmosphere,Room Temperature
  • solubility  :water: freely soluble(lit.)
  • pka :0.27±0.10(Predicted)
  • Water Solubility  :Soluble in water.
  • Sensitive  :Hygroscopic
  • Merck  :6377
  • CAS DataBase Reference :120-18-3(CAS DataBase Reference)
  • EWG's Food Scores :1
  • FDA UNII :O9S4K2S25E
  • EPA Substance Registry System :2-Naphthalenesulfonic acid (120-18-3)
Safety
  • Hazard Codes  :C,F
  • Risk Statements  :35-34-11
  • Safety Statements  :26-36/37/39-45-16
  • RIDADR  :UN 2583 8/PG 2
  • WGK Germany  :1
  • RTECS  :QK1225000
  • Hazard Note  :Corrosive
  • TSCA  :Yes
  • HazardClass  :8
  • PackingGroup  :III
Hazard and Precautionary Statements (GHS)
  • Symbol(GHS)
  • Signal wordDanger
  • Hazard statements H303-H318-H290-H314
  • Precautionary statements P260-P280-P303+P361+P353-P304+P340+P310-P305+P351+P338-P260h-P301+P330+P331-P405-P501a
Naphthalene-2-sulfonic acid Price More Price(12)
  • Brand: Sigma-Aldrich
  • Product number: 249548
  • Product name : 2-Naphthalenesulfonic acid
  • Purity: technical grade, 70%
  • Packaging: 5g
  • Price: $70
  • Updated: 2021/12/16
  • Buy: Buy
  • Brand: Sigma-Aldrich
  • Product number: 249548
  • Product name : 2-Naphthalenesulfonic acid
  • Purity: technical grade, 70%
  • Packaging: 100g
  • Price: $131
  • Updated: 2021/12/16
  • Buy: Buy
  • Brand: Alfa Aesar
  • Product number: H56685
  • Product name : Naphthalene-2-sulfonic acid, 98%
  • Purity: 
  • Packaging: 500g
  • Price: $293
  • Updated: 2021/12/16
  • Buy: Buy
  • Brand: Alfa Aesar
  • Product number: H56685
  • Product name : Naphthalene-2-sulfonic acid, 98%
  • Purity: 
  • Packaging: 100g
  • Price: $78.3
  • Updated: 2021/12/16
  • Buy: Buy
  • Brand: TRC
  • Product number: N378503
  • Product name : Naphthalene-2-sulfonicAcid
  • Purity: 
  • Packaging: 1g
  • Price: $45
  • Updated: 2021/12/16
  • Buy: Buy

Naphthalene-2-sulfonic acid Chemical Properties,Usage,Production

  • Chemical Properties Nondeliquescent, white plates.Soluble in water, alcohol, and ether. Combustible.
  • Uses Naphthalene-2-sulfonic acid is used in making direct dyes, reactive des and employed as dye and agrochemical intermediates.
  • Uses Starting point in the manufacture of β-naphthol, β-naphtholsulfonic acid, β-naphthylaminesulfonic acid, etc.
  • Definition ChEBI: A naphthalenesulfonic acid in which the sulfo group is linked to position 2 of the naphthalene ring.
  • Purification Methods Crystallise the acid from conc HCl. The S-benzylisothiuronium salt has m 192o (from aqueous EtOH). [Berger Acta Chem Scand 8 432 1954, Beilstein 11 H 171, 11 IV 527.]
Naphthalene-2-sulfonic acid Preparation Products And Raw materials
Raw materials
Preparation Products
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