220930

Potassium nitrosodisulfonate

• Synonym(s): Dipotassium nitrosodisulfonate, Fremy’s salt
• Linear Formula: (KSO₃)₂NO
• CAS Number: 14293-70-0
• Molecular Weight: 268.33
• EC Number: 238-219-0
• MDL number: MFCD00010878
• UNSPSC Code: 12352000
• PubChem Substance ID: 24853200
• NACRES: NA.22
• form: powder

Properties

• form: powder
• Quality Level: 100
• reaction suitability: reagent type: oxidant
• storage temp.: 2-8°C
• SMILES string: [K+].[K+].[O]N(S([O-])(=O)=O)S([O-])(=O)=O
• InChI: 1S/2K.H2NO7S2/c;;2-1(9(3,4)5)10(6,7)8/h;;(H,3,4,5)(H,6,7,8)/q2*+1;/p-2
• InChI key: IHSLHAZEJBXKMN-UHFFFAOYSA-L

Description

General description

Potassium nitrosodisulfonate is an oxidizing reagent that can be used to convert phenols, naphthols, and anilines to quinones, benzylic alcohols to aldehydes or ketones, and amino acids to α-keto acids. It can also be used for the preparation of heterocyclic quinones and oxidative aromatization.

Application

Potassium nitrosodisulfonate can be used as an oxidizing reagent for the oxidation of:

• Aromatic amines to their corresponding quinones.
• Hydroethidine to 2-hydroxyethidium.
• Tyrosine to o-quinones.

Safety Information

• pictograms: GHS02,GHS07
• signalword: Danger
• hcodes: H260,H302 + H312 + H332
• pcodes: P223 - P231 + P232 - P280 - P301 + P312 - P302 + P352 + P312 - P304 + P340 + P312
• Hazard Classifications: Acute Tox. 4 Oral - Water-react 1
• supp_hazards: EUH014
• Storage Class: 4.3 - Hazardous materials which set free flammable gases upon contact with water
• wgk_germany: WGK 3
• flash_point_f: Not applicable
• flash_point_c: Not applicable
• ppe: dust mask type N95 (US), Eyeshields, Gloves