Potassium nitrosodisulfonate
ALDRICH/220930
Synonym: Dipotassium nitrosodisulfonate; Fremy’s salt
CAS Number: 14293-70-0
Empirical Formula (Hill Notation): K2NO7S2
Molecular Weight: 268.33
EC Number: 238-219-0
MDL Number: MFCD00010878
Linear Formula: (KSO3)2NO
Product Type: Chemical
| form | powder |
| InChI | 1S/2K.H2NO7S2/c;;2-1(9(3, |
| InChI key | IHSLHAZEJBXKMN-UHFFFAOYSA |
| Quality Level | 100 ![]() |
| reaction suitability | reagent type: oxidant |
| SMILES string | [K+].[K+].[O]N(S([O-])(=O |
| storage temp. | 2-8°C |
| 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. |
| 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. |
| Packaging: | 1, 10, 50 g in poly bottle |
| Symbol | ![]() GHS02,GHS07 |
| Signal word | Danger |
| Hazard statements | H260 - H302 + H312 + H332 |
| Precautionary statements | P223 - P231 + P232 - P280 - P301 + P312 - P302 + P352 + P312 - P304 + P340 + P312 |
| Hazard Codes | F,Xn |
| Risk Statements | 14/15-20/21/22 |
| Safety Statements | 36 |
| RIDADR | UN 2813 4.3 / PGI |
| WGK Germany | WGK 3 |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| Supplemental Hazard Statements | EUH014 |
| Storage Temp. | 2-8°C |
| UNSPSC | 12352000 |



