Thiourea
We offer Thiourea from the warehouse at favorable prices with delivery throughout Russia.
Specification
| Purity | 99% min |
| Loss on heating | 0,4% max |
| Content of water insoluble substances | 0,02% max |
| Ash content | 0,005% max |
| Content of rhodanates | 0,5% max |
Description
Thiourea, thiocarbamide, thiocarbonic acid diamide
Mol. weight 76.12. Colorless crystals of bitter taste. Soluble in water.
Solubility in water at the appropriate temperature
| T, oC | 0 | 20 | 60 | 100 |
| Solubility, gr/100 ml of water | 4,6 | 12,0 | 44,6 | 69 |
Thiourea is an organosulfur compound. It is structurally similar to urea, except that the oxygen atom is replaced by a sulfur atom, but the properties of urea and thiourea differ significantly. Thiourea belongs to a wide class of compounds with the general structure (R1R2N)(R3R4N)C=S.
In addition to water, it is soluble in methanol, ethanol, pyridine. melting t . 184.5°C.
Density 1.405 g/cm3. Melting heat 277 kJ/kg. The heat of formation is -88.2 kJ/mol.
Heat capacity at 300K 1235 J/(kg K), thermal conductivity 0.647 W/(m K)
Usage
Thiourea is used in mining plants (including gold mining), in the textile industry, metallurgy, and pharmaceuticals.
In the mining industry, thiourea is used as a flotation agent. With its help, various metals are enriched.
It is a high-quality reagent during the search for bismuth, rhenium, ruthenium.
In agriculture, thiourea acts as an inorganic fertilizer. It is also added to the formulations of fungicides. It has high disinfecting properties, therefore, with the help of thiourea solutions, vegetables are disinfected.
Thiourea is used for tinning copper, as well as in the production of semiconductor film from lead. Thiourea is also widely used in the synthesis of heterocyclic compounds, and as an inhibitor of acid corrosion of steels.
It is used in pyrotechnics as a low-calorie fuel-activator in color-flame and signal smoke compositions. It is capable of facilitating ignition and intensifying the combustion of pyrotechnic mixtures. Mixtures with potassium chlorate are very sensitive to mechanical stress, so there is a tendency to replace thiourea with a less active thiuram or use a combination of thiourea/urea. In compositions, it burns with a colorless flame. In mixtures with oxidizing agents, it has low thermal stability and begins to decompose at 80-100°C. Low toxicity, however, with systematic exposure, it inhibits the function of the thyroid gland and hematopoietic organs.
