Thiourea Dioxide

Post Date:
Feb 27,2013
Expiry Date:
Aug 26,2013
Detailed Description:
Cas No. :1758-73-2, 4189-44-0 Quantity: 5Metric Tons
Specs:white crystal powder
Payment Method: TT% in advance or Irrevocable L/C at sight
THIOUREA DIOXIDE

Formula: (NH2)2CSO2 CAS No: 1758-73-2 or 4189-44-0
Other name: Formamidine Sulfinic Acid (FAS), TDO, TUD
Melting point: 126°C PH: 4 (1% Solution)
UN No: 3341 Dangerous Goods Class: 4.2

Specification:

Items Standard

Appearance
white crystal powder

Purity :(%)
≥99.0

Thiourea: (%)
≤0.10

Moisture: (%)
≤0.05

Iron(PPM)
≤10

Sulphate: (%)
≤0.17

Packing: 50kg fiber drums, 25kg/500kg/1000kg woven bags, 25kg kraft bags.
Applications:

1. Pulper bleaching of recycled paper.
2. Single stage bleaching of recycled paper.
3. Sequential stage bleaching of recycled paper.
4. Solubilizing Vat dyes.
5. Clearing commercial dyes.
6. Reductive bleaching of minerals (primarily Calcium Carbonate).
7. Replacing sodium hydrosulfite in all above applications.
CAS Registry Number:
1758-73-2, 4189-44-0
Synonyms:
;Aminoiminomethanesulphinic acid;Thiourea dioxide;Thiurea Dioxide;Formamidinesulphinic acid;Formamidine sulfinic acid;(E)-amino(imino)methanesulfinic acid;Thiourea S,S-dioxide;(E)-amino(imino)methanesulfinate;1-(dioxido-lambda~6~-sulfanylidene)methanediamine;
Molecular Formula:
CH₄N₂O₂S
Molecular Weight:
108.1197
Molecular Structure:
Hazard Symbols:
Xn:Harmful;
Risk Codes:
R22:;
R36/37/38:;
Safety Description:
S24/25:;

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