2-Nitroso-1-naphthol-4-sulfonic acid

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2-Nitroso-1-naphthol-4-sulfonic acid Basic information
Product Name:2-Nitroso-1-naphthol-4-sulfonic acid
Synonyms:4-HYDROXY-3-NITROSO-1-NAPHTHALENESULFONIC ACID;2-NITROSO-1-NAPHTHOL-4-SULPHONIC ACID TETRAHYDRATE;LABOTEST-BB LT00454247;4-hydroxy-3-nitroso-1-naphthalenesulfonicaci;4-hydroxy-3-nitrosonaphthalene-1-sulphonic acid;4-hydroxy-3-nitrosonaphthalene-1-sulfonic acid;4-Hydroxy-3-nitroso-1-naphthalenesulfonic acid tetrahydrate ;2-NITROSO-1-NAPHTHOL-4-SULFONIC ACID FOR SPECTROPHOTOM. DET. 99+%
CAS:3682-32-4
MF:C10H7NO5S
MW:253.23
EINECS:222-964-3
Product Categories:
Mol File:3682-32-4.mol
2-Nitroso-1-naphthol-4-sulfonic acid Structure
2-Nitroso-1-naphthol-4-sulfonic acid Chemical Properties
Melting point 140-145 °C (dec.)
density 1.65±0.1 g/cm3(Predicted)
pka0.11±0.40(Predicted)
form powder to crystal
color Orange to Brown
CAS DataBase Reference3682-32-4(CAS DataBase Reference)
EPA Substance Registry System1-Naphthalenesulfonic acid, 4-hydroxy-3-nitroso- (3682-32-4)
Safety Information
Hazard Codes Xn,Xi
Risk Statements 20/21/22-33-36/37/38
Safety Statements 36/37-37/39-26
WGK Germany 3
TSCA TSCA listed
HS Code 2908.99.9000
MSDS Information
ProviderLanguage
SigmaAldrich English
2-Nitroso-1-naphthol-4-sulfonic acid Usage And Synthesis
Purification MethodsCrystallise the acid from dilute HCl solution. The crystals are dried over CaCl2 in a vacuum desiccator. It has also been purified by dissolution in aqueous alkali and precipitation by addition of water. It is a reagent for cobalt. [Beilstein 11 H 331, 11 II 189, 11 III 621, 11 IV 668.]
2-Nitroso-1-naphthol-4-sulfonic acid Preparation Products And Raw materials
Preparation ProductsC.I. Vat Red 30
Tag:2-Nitroso-1-naphthol-4-sulfonic acid(3682-32-4) Related Product Information
1-Naphthalenethiol 2-Nitroso-1-naphthol-4-sulfonic acid Phenolsulfonic acid 2-Nitroso-1-naphthol 2-Naphthylamine 1-Naphthalenesulfonic acid 1-Naphthol-4-sulfonic acid 4-Mercaptophenol Nitrosobenzene 2-Aminophenol-4-sulfonic acid Naphthalene-1-sulfonic acid hydrate, 98% 1-Naphthol 2-nitroso-1-naphthol-4-sulfonic acid tetrahydrate 4-Hydroxybenzenesulfonic acid 2-Nitroso-1-naphthol-4-sulfonic acid tetrahydrate 2-Nitroso-1-naphthol-4-sulfonic acid hydrate 2-Amino-1-naphthol