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Home > Encyclopedia > 1-Naphthalenesulfonic acid, 3,4-dihydro-3,4-dioxo-, potassium salt (1:1)

1-Naphthalenesulfonic acid, 3,4-dihydro-3,4-dioxo-, potassium salt (1:1)

1-Naphthalenesulfonic acid, 3,4-dihydro-3,4-dioxo-, potassium salt (1:1) structure

1-Naphthalenesulfonic acid, 3,4-dihydro-3,4-dioxo-, potassium salt (1:1) 

structure
  • CAS No:

    5908-27-0

  • Formula:

    C10H6O5S.K

  • Chemical Name:

    1-Naphthalenesulfonic acid, 3,4-dihydro-3,4-dioxo-, potassium salt (1:1)

  • Synonyms:

    1-Naphthalenesulfonic acid,3,4-dihydro-3,4-dioxo-,potassium salt (1:1);1-Naphthalenesulfonic acid,3,4-dihydro-3,4-dioxo-,potassium salt;Potassium 1,2-naphthoquinone-4-sulfonate;Potassium naphthoquinone-4-sulfonate;Potassium β-naphthoquinone-4-sulfonate

  • Categories:

    Chemical Reagents  >  Organic Reagents

Description

ORANGE FLUFFY POWDER

1-Naphthalenesulfonic acid, 3,4-dihydro-3,4-dioxo-, potassium salt (1:1) Basic Attributes

276.31

275.94900

227-611-7

Characteristics

99.7

1.41890

1.68g/cm3

286-288 °C(lit.)

1.691

Safety Information

36/37

22-26-37/39

Xi

P261, P264, P271, P280, P304+P340, P305+P351+P338, P312, P337+P313, P403+P233, P405, P501

H319

1-Naphthalenesulfonic acid, 3,4-dihydro-3,4-dioxo-, potassium salt (1:1) Use and Manufacturing

Methods of Manufacturing

1-Amino-2-naphthol-4-sulfonic acid is oxidized with dilute nitric acid. Due to the release of nitrogen dioxide, the resulting paste product is orange-yellow. Add saturated ammonium chloride solution to produce 1, 2-naphthoquinone-4 -Ammonium sulfonate. Dissolve it in bromine-containing water with activated carbon for decolorization, and then add saturated potassium chloride to precipitate potassium salt crystals, with a yield of 17-18%.

Uses

Dye intermediate. Sodium salt is also used for colorimetric determination of amines, amino acids and sulfonamide derivatives.

Material

Nitric acid

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