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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
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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)
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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
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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.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
8.20082
Product name
Aminoiminomethanesulfinic acid
Purity
for synthesis
Packaging
250g
Price
$75.9
Updated
2024/03/01
Sigma-Aldrich
Product number
F16001
Product name
Formamidinesulfinic acid
Purity
≥98%
Packaging
100g
Price
$78.8
Updated
2024/03/01
Sigma-Aldrich
Product number
8.20082
Product name
Aminoiminomethanesulfinic acid
Purity
for synthesis
Packaging
1kg
Price
$212
Updated
2024/03/01
TCI Chemical
Product number
F0115
Product name
Formamidinesulfinic Acid
Purity
>93.0%(T)
Packaging
25g
Price
$36
Updated
2024/03/01
TCI Chemical
Product number
F0115
Product name
Formamidinesulfinic Acid
Purity
>93.0%(T)
Packaging
500g
Price
$217
Updated
2024/03/01
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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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Thiourea dioxide Suppliers

JenenChemical(Shandong)Co.,Ltd
Tel
00-17861750229 17861750229
Email
294813132@qq.com
Country
China
ProdList
55
Advantage
58
JinJin Le Chemical Co., Ltd
Tel
10106090
Email
jjlchem2@163.com
Country
China
ProdList
9981
Advantage
58
Hubei Honghan Biotech Co., Ltd
Tel
0719-0719-7199239 15675290733
Email
121628410@qq.com
Country
China
ProdList
22
Advantage
58
Jinan Feiyue Chemical Co., Ltd
Tel
0531-0531-68824182 18615221057
Email
913474026@qq.com
Country
China
ProdList
108
Advantage
58
Shandong Elito Biotechnology Co., Ltd
Tel
0539-18853986-090 13053958157
Email
332554317@qq.com
Country
China
ProdList
88
Advantage
58
J & K SCIENTIFIC LTD.
Tel
010-82848833 400-666-7788
Fax
86-10-82849933
Email
jkinfo@jkchemical.com
Country
China
ProdList
96815
Advantage
76
Meryer (Shanghai) Chemical Technology Co., Ltd.
Tel
021-61259108 18621169109
Fax
86-21-61259102
Email
market03@meryer.com
Country
China
ProdList
40228
Advantage
62
Alfa Aesar
Tel
400-6106006
Fax
021-67582001/03/05
Email
saleschina@alfa-asia.com
Country
China
ProdList
30123
Advantage
84
TCI (Shanghai) Development Co., Ltd.
Tel
021-67121386
Fax
021-67121385
Email
Sales-CN@TCIchemicals.com
Country
China
ProdList
24529
Advantage
81
Capot Chemical Co., Ltd
Tel
+86 (0) 571 85 58 67 18
Fax
0086-571-85864795
Email
sales@capotchem.com
Country
China
ProdList
18207
Advantage
66
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View Lastest Price from Thiourea dioxide manufacturers

HEBEI SHENGSUAN CHEMICAL INDUSTRY CO.,LTD
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
Hebei Zhuanglai Chemical Trading Co Ltd
Product
Thiourea dioxide 1758-73-2
Price
US $10.00/kg
Min. Order
1kg
Purity
99%
Supply Ability
20 ton
Release date
2024-11-27
Hebei Dangtong Import and export Co LTD
Product
Thiourea dioxide 1758-73-2
Price
US $70.00-60.00/kg
Min. Order
1kg
Purity
99%
Supply Ability
20Tons
Release date
2023-10-10

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