Thiourea dioxide
1、 Nature
Other name: Formamidine sulfinic acid
Appearance: white crystalline powder
Melting point: 126°
Molecular formula: (NH 2 ) 2 CSO 2
Molecular weight: 108.12
CAS NO:1758-73-2
HS CODE:2930 9099
UN NO:3341
PH:4
Dangerous goods level: 4.2
Decomposition temperature: 115.8-117° in aqueous solution (above 40°)
2、Specification
Item Standard
Purity ≥99%
Residual thiourea ≤0.1
Moisture ≤0.05
Fe (ppm) ≤10
Sulfate ≤0.17
3、 Performance
Environmental protection, reduce COD, BOD, strong reducing ability, slow reaction, high safety, good thermal stability, convenient storage and transportation, the material is 20% of the insurance powder
4、 Application
a. Reducing agent for disperse, sulfur and vat dyes.
b. Pulp bleaching of recycled paper, waste paper deinking
c. medicines, flavors, and precious metals
d. Kaolin bleaching
e Wool& silk bleaching
5、Package
25kg woven bag,
25kg kraft paper bag
50kg fiber drum
500kg or 1000kg container bags
20FCL:
95% and 99% content:
25kg woven bag: 24.5 MT without pallet; 23 MT with pallet
25kg kraft paper bag: 22 MT without pallet; 20 MT with pallet
50 kg fiber drum : can hold 18 MT with or without pallet
500kg, 1000kg container bag: 20 MT with or without pallet.
6、Storage
Dry and well ventilated, below 30 degrees. Moisture and rainproof.