Formamidinesulfinic acid , 98% , 1758-73-2

Synonym(s):
Aminoiminomethanesulfinic acid;FormamidinesulfInic acid, Thiourea dioxide;Thiourea dioxide

CAS NO.：1758-73-2

Empirical Formula: CH4N2O2S

Molecular Weight: 108.12

MDL number: MFCD00002397

EINECS: 217-157-8

PRODUCT Properties

• Melting point: 124-127 °C (dec.)(lit.)
• Boiling point: 355.3±25.0 °C(Predicted)
• Density: 1.68
• vapor pressure: 0Pa at 25℃
• refractive index: 1.6550 (estimate)
• storage temp.: 2-8°C
• solubility: 27g/l
• form: Crystalline Powder
• pka: 2.40±0.10(Predicted)
• color: White
• PH: 4 (10g/l, H2O, 20℃)
• Water Solubility: 30 g/L (20 ºC)
• Sensitive: Moisture Sensitive
• BRN: 506653
• InChIKey: FYOWZTWVYZOZSI-UHFFFAOYSA-N
• LogP: -3.37 at 25℃

Description and Uses

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).

Safety

• Symbol(GHS): GHS02,GHS05,GHS06,GHS08
• Signal word: Danger
• Hazard statements: H251-H302-H315-H318-H330-H335-H373
• Precautionary statements: P235-P280-P301+P312+P330-P304+P340+P310-P305+P351+P338+P310-P314
• Hazard Codes: Xn,Xi
• Risk Statements: 5-22-36/37/38
• Safety Statements: 26-24/25-36
• RIDADR: UN 3341 4.2/PG 2
• WGK Germany: 1
• RTECS: PB0372500
• TSCA: Yes
• HazardClass: 4.2
• PackingGroup: II
• HS Code: 29309070