1-NITROSO-2-NAPHTHOL-3,6-DISULFONIC ACID DISODIUM SALT Chemical Properties

Melting point:

>300 °C(lit.)

solubility 

Slightly soluble in methanol and ethanol.

form 

Crystalline Powder

color 

Yellow to orange

Water Solubility 

almost transparency

Merck 

14,6644

BRN 

3643930

CAS DataBase Reference

525-05-3(CAS DataBase Reference)

EPA Substance Registry System

2,7-Naphthalenedisulfonic acid, 3-hydroxy-4-nitroso-, disodium salt (525-05-3)

Safety Information

Hazard Codes 

Xn

Risk Statements 

20/21/22

Safety Statements 

22-24/25

WGK Germany 

3

RTECS 

QJ6480000

TSCA 

Yes

HS Code 

29089990

MSDS

• Language:English Provider:ACROS
• Language:English Provider:SigmaAldrich
• Language:English Provider:ALFA

1-NITROSO-2-NAPHTHOL-3,6-DISULFONIC ACID DISODIUM SALT Usage And Synthesis

Chemical Properties

YELLOWISH-ORANGE TO YELLOW-BROWN CRYST. POWDER

Uses

1-Nitroso-2-naphthol-3,6-disulfonic acid disodium salt is the most sensitive determination of trace cobalt reagents used for determination of cobalt and potassium-sensitive reagents.

Uses

As a reagent for cobalt and potassium.

Purification Methods

Purify the salt by dissolution in aqueous alkali and precipitation by addition of HCl. The pKa is 7.13. [Oka & Miyamoto J Chem Soc Jpn (Pure Chem Sectn) 76 672 1955 (Chem Abstr 11882 1956I), Beilstein 11 IV 669.]

1-NITROSO-2-NAPHTHOL-3,6-DISULFONIC ACID DISODIUM SALT(525-05-3)Related Product Information

• Cupric acetate monohydrate
• Ethylenediaminetetraacetic acid
• Potassium hydroxide
• 1-Propanol
• CHROMOTROPIC ACID DISODIUM SALT DIHYDRATE
• Carvacrol
• NITRO RED
• 3-Hydroxynaphthalene-2,7-disulphonic acid
• 2-Naphthol
• 1-NITROSO-2-NAPHTHOL-3,6-DISULFONIC ACID DISODIUM SALT MONOHYDRATE,1-NITROSO-2-NAPHTHOL-3,6-DISULFONIC ACID DISODIUM SALT HYDRATE
• Disodium 2-naphthol-3,6-disulfonate
• 1-NITROSO-2-NAPHTHOL-3,6-DISULFONIC ACID DISODIUM SALT
• 1-NITROSO-2-NAPHTHOL-3,6-DISULFONIC ACID DISODIUM SALT
• 1-Nitroso-2-naphthol