Thiourea Dioxide
Formula: (NH2)2CSO2
CAS No: 1758-73-2 or 4189-44-0
Other name: Formamidine Sulfinic Acid (FAS), TDO

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:

Appearance white crystal powder

Purity :(%) ≥99.0

Thiourea: (%) ≤0.10

Moisture: (%) ≤0.05

Iron(PPM) ≤10

Sulphate: (%) ≤0.17

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.

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