Thiourea dioxide
- Product Name
- Thiourea dioxide
- CAS No.
- 1758-73-2
- Chemical Name
- Thiourea dioxide
- Synonyms
- FORMAMIDINESULFINIC ACID;AMINOIMINOMETHANESULFINIC ACID;Thiurea dioxide;Thiourea S,S-dioxide;FORMAMIDINESULPHINIC ACID;aminoimino-methanesulfinicaci;FASTECH;Amino(imino);FAS PRIMER PAIR;Tiourea dioxide
- CBNumber
- CB7761108
- Molecular Formula
- CH4N2O2S
- Formula Weight
- 108.12
- MOL File
- 1758-73-2.mol
Thiourea dioxide Property
- 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℃
- CAS DataBase Reference
- 1758-73-2(CAS DataBase Reference)
- EPA Substance Registry System
- Methanesulfinic acid, aminoimino- (1758-73-2)
Safety
- 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
Hazard and Precautionary Statements (GHS)
- Symbol(GHS)
-
- Signal word
- Danger
- Hazard statements
-
H251Self-heating; may catch fire
H302Harmful if swallowed
H315Causes skin irritation
H318Causes serious eye damage
H330Fatal if inhaled
H335May cause respiratory irritation
H373May cause damage to organs through prolonged or repeated exposure
- Precautionary statements
-
P235Keep cool.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P314Get medical advice/attention if you feel unwell.
N-Bromosuccinimide Price
- Product number
- 8.20082
- Product name
- Aminoiminomethanesulfinic acid
- Purity
- for synthesis
- Packaging
- 250g
- Price
- $75.9
- Updated
- 2024/03/01
- Product number
- F16001
- Product name
- Formamidinesulfinic acid
- Purity
- ≥98%
- Packaging
- 100g
- Price
- $78.8
- Updated
- 2024/03/01
- Product number
- 8.20082
- Product name
- Aminoiminomethanesulfinic acid
- Purity
- for synthesis
- Packaging
- 1kg
- Price
- $212
- Updated
- 2024/03/01
- Product number
- F0115
- Product name
- Formamidinesulfinic Acid
- Purity
- >93.0%(T)
- Packaging
- 25g
- Price
- $36
- Updated
- 2024/03/01
- Product number
- F0115
- Product name
- Formamidinesulfinic Acid
- Purity
- >93.0%(T)
- Packaging
- 500g
- Price
- $217
- Updated
- 2024/03/01
Thiourea dioxide Chemical Properties,Usage,Production
Chemical Properties
white crystalline powder
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).
General Description
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.
Air & Water Reactions
Soluble in water
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.
Health Hazard
Fire will produce irritating, corrosive and/or toxic gases. Inhalation of decomposition products may cause severe injury or death. Contact with substance may cause severe burns to skin and eyes. Runoff from fire control may cause pollution.
Fire Hazard
Flammable/combustible material. May ignite on contact with moist air or moisture. May burn rapidly with flare-burning effect. Some react vigorously or explosively on contact with water. Some may decompose explosively when heated or involved in a fire. May re-ignite after fire is extinguished. Runoff may create fire or explosion hazard. Containers may explode when heated.
Flammability and Explosibility
Non flammable
Purification Methods
Dissolve it in five parts of aqueous 1:1% NaHSO3 at 60-63o (charcoal), then allow it to crystallise slowly, with agitation, at 10o. Filter and dry it immediately at 60o [Koniecki & Linch Anal Chem 30 1134 1958]. [Beilstein 3 I 36, 3 IV 145.]
Thiourea dioxide Preparation Products And Raw materials
Raw materials
Preparation Products
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View Lastest Price from Thiourea dioxide manufacturers
- Product
- Thiourea dioxide 1758-73-2
- Price
- US $3.50/kg
- Min. Order
- 1kg
- Purity
- ≥99%
- Supply Ability
- 3000tons/month
- Release date
- 2024-08-17
- Product
- Thiourea dioxide 1758-73-2
- Price
- US $100.00-75.00/kg
- Min. Order
- 1kg
- Purity
- 99%
- Supply Ability
- 5000
- Release date
- 2024-08-14
- Product
- Thiourea dioxide 1758-73-2
- Price
- US $0.00-0.00/KG
- Min. Order
- 1KG
- Purity
- 99%
- Supply Ability
- 5000kg/month
- Release date
- 2024-05-13