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Aminoiminomethansulfinsure
FORMAMIDINESULFINIC ACID · AMINOIMINOMETHANESULFINIC ACID · Thiurea dioxide · Thiourea S,S-dioxide · FORMAMIDINESULPHINIC ACID · aminoimino-methanesulfinicaci · FASTECH · Amino(imino)
Identifikatoren & physikalische Daten
| CAS No. | 1758-73-2 |
|---|---|
| Summenformel | CH4N2O2S |
| Durchschnittliche Molmasse | 108,12 g/mol |
| Monoisotopische Masse | 107,99934837 g/mol |
| SMILES | N=C(N)S(=O)O |
| InChIKey | FYOWZTWVYZOZSI-UHFFFAOYSA-N |
| PubChem CID | 61274 |
| EC No. | 217-157-8 |
| DTXSID | DTXSID4029224 |
| Lokaler Name | Aminoiminomethansulfinsure |
Chemische & physikalische Eigenschaften
| XLogP | -1,1 |
|---|---|
| Polarare Oberfläche (TPSA) | 106 |
| H-Brücken-Donoren | 3 |
| H-Brücken-Akzeptoren | 4 |
| Frei drehbare Bindungen | 1 |
| Schwere Atome | 6 |
| Formalladung | 0 |
| Komplexität | 89,5 |
| Physical Description | Thiourea dioxide appears as a white or light-yellow odorless crystalline powder. Mp:126 °C. Soluble in water (27 g / L at room temperature). Decomposes exothermically at temperatures above 126 °C with the emission of noxious gases (sulfur oxides, ammonia, carbon monoxide, nitrogen oxides and hydrogen sulfide) and carbon dioxide. Extended exposure to temperatures above 50 °C and moisture may cause visible decomposition. Irritating to skin and mucous membranes. Corrosive to eye tissue. Used in leather processing, the paper industry, photographic industry, and in textile processing as a bleaching agent.Dry Powder |
| Schmelzpunkt | 124-127 °C (dec.)(lit.) |
| Siedepunkt | 355.3±25.0 °C(Predicted) |
| Dichte | 1.68 |
| Dampfdruck | 0Pa at 25℃ |
| Brechungsindex | 1.6550 (estimate) |
| Lagerbedingungen | 2-8°C |
| Löslichkeit | 27g/l30 g/L (20 ºC) |
| Aggregatzustand | Crystalline Powder |
| pKa (Säurekonstante) | 2.40±0.10(Predicted) |
| Farbe | White |
| pH | 4 (10g/l, H2O, 20℃) |
| BRN | 506653 |
| Kosmetik-Inhaltsstoffe Funktionen | REDUCING |
| InChI | 1S/CH4N2O2S/c2-1(3)6(4)5/h(H3,2,3)(H,4,5) |
| InChIKey | FYOWZTWVYZOZSI-UHFFFAOYSA-N |
| SMILES | NC(=N)S(O)=O |
| LogP (Verteilungskoeffizient) | -3.37 at 25℃ |
| CAS Datenbank | 1758-73-2(CAS DataBase Reference) |
| EPA chemische Informationen | Methanesulfinic acid, aminoimino- (1758-73-2) |
Sicherheit & Vorschriften
| GHS-Einstufung | This chemical does not meet GHS hazard criteria for 2.4% (4 of 164) of reports.DangerH251 (59.8%): Self-heatingmay catch fire [Danger Self-heating substances and mixtures]P235, P260, P261, P264, P264+P265, P270, P271, P280, P301+P317, P302+P352, P304+P340, P305+P351+P338, P305+P354+P338, P317, P319, P321, P330, P332+P317, P337+P317, P362+P364, P403+P233, P405, P407, P410, P413, P420, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 164 reports by companies from 25 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies. |
|---|---|
| Regulatorische Informationen | Chemical: Methanesulfinic acid, aminoimino-Methanesulfinic acid, 1-amino-1-imino- is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Methanesulfinic acid, 1-amino-1-imino- are required to report information about their production and use of this chemical to the EPA under the Toxic Substances Control Act (TSCA). (40 eCFR Part 711)Status: Active Update: 17-06-2021 https://echa.europa.eu/registration-dossier/-/registered-dossier/8595Thiourea dioxide: HSNO Approval: HSR001431 Approved with controls |
| Weitere Sicherheitsinformationen | IMAP assessments - Methanesulfinic acid, aminoimino-: Human health tier II assessment |
| DOT-Kennzeichnung | Spontaneously Combustible |
| Brandgefahren | Excerpt from ERG Guide 135 [Substances - Spontaneously Combustible]:· Flammable/combustible material. |
| Gesundheitsgefahren | Excerpt from ERG Guide 135 [Substances - Spontaneously Combustible]:· Fire will produce irritating, corrosive and/or toxic gases. |
| DOT-Nummer und Handbuch | 3341 135 |
| Reaktive Gruppe | Amides and Imides |
| Reactivity Alerts | Pyrophoric |
| Reactivity Profile | Thiourea dioxide is a reducing agent and a derivative of sulfinic acid (a weak inorganic acid). Decolorizes and bleaches materials by chemical reduction. Stable under normal temperatures and pressures. May decompose on exposure to moist air or water. Incompatible with strong oxidizing agents, strong bases. Aqueous solutions are acidic and corrosive. |
Anwendungen & Verwendung
Verwenden
Convenient reagent for the reduction of ketones to secondary alcohols. Thiourea dioxide is an effective bleach when used alone or when used after hydrogen peroxide in a full bleaching process (Duffield, 1986; Cegarra et al, 1988). Bleaching with thiourea dioxide is not common practice but it is effective when used alone, and the process compares favorably with hydrogen peroxide bleaching. A formulation can include a commercial thiourea dioxide product, wetting agent and EDTA sequestering agent. Reductive bleaching is carried out at pH 7.0 at 70°C for 60 min (Duffield, 1986).