thiourea dioxide

1.no bad smell and friendly to envirnment, 2.the usage quantity is much less than sodium hydrosulfite in textile&paper industry

1.Physical and Chemical Properties

Other Name: Formamidine sulfinic acid, Amino imino methanesulfinic acid

Appearance and Odor: White crystal powder, odorless

Formula: CH4N2SO2

Molecular weight: 108.12

Melting Point: 126°C

PH: 4(1% Solution)

CAS No.: 1758-73-2 or 4189-44-0

UN No.: 3341

Dangerous Goods Class: 4.2

Thiourea Dioxide is one kind of stable compound without oxidablity and reducibity, it can solute in water 26.7g/L(20°C), and saturation water solution PH value is 5.0.It’s still stable in 20-30°C water solution, but it will decompose under heating and alkali function, drifts away sulfurous acid, therefore manifested a stronger deoxidize activity.

2. Specification:

Purity: 99.%Min

Thiourea: 0.10%Max

Moisture:0.05%Max

Iron(Fe):10ppm Max

Sulphate: 0.17%Max

3.Uses:

It is one new kind environmental-protection strong reducing agent which is can be used as exchange of Sodium Hydrosulfite. It has good heat stability, high as reducibility, easy operation and transportation and storage convenient. It widely applies to reduction dyes and sulfur dyes dyeing, wool and silk bleaching, disperse dyes reducing cleaning, dye vat cleaning and so on. And also used in paper making industry as bleaching agent, deinking, waste paper deink, etc. And then used to organic synthesis in synthetic fiber industry, additive of polythene sensitizer of photographical emulsion, noble metal recycling and separates, etc. There is no pollution during the operation.

4. Packing:

  a.500kg or 1000kg jumbo bags.

  b.50kg fiber drums.

  c.25kg or 50kg woven bags.

  d.25kg kraft compound plastic bags or upon customers’ demands.

5.Storage:

Storage in dry clean, well-ventilated condition, the warehouse temperature under 30°C. Keep away from moisture and raining.

thiourea dioxide