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Thiourea (99.5%) - China
- 产地
- : China
- CAS 编号
- : 62-56-6
- HS 代码
- : 2930.90.10
基本信息
- IUPAC Name
- : thiourea
- Molecular Formula
- : CH4N2S
- Molecular Weight (g/mol)
- : 76.1200
- Synonyms & Trade Names
- : Thiourea; Thiocarbamide; Pseudourea
- Purity / Assay (%)
- : 99.5% min
- Grade / Quality Level
- : Technical Grade
- Physical Form
- : Solid
- Concentration
- : Pure substance
- Appearance / Color
- : White to off-white solid
- Odor
- : Odorless
- Melting Point (°C)
- : 172.0000
- Density (g/cm³)
- : 1.4050
- Solubility in Water
- : Freely soluble
- Signal Word
- : Warning
- GHS Hazard Class
- : Aquatic hazard
- H-Statements
- : H302|H411
- P-Statements
- : P260|P270|P273|P301+P312|P391
- REACH Status
- : Registered
- Drug Precursor Status
- : Non-precursor
- Storage Class (GHS)
- : 13
- Storage Conditions
- : Cool, dry place; away from strong oxidizers
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Brief Overview:
Thiourea is an organosulfur compound with the formula, CH4N2S. It has properties very different to that of urea even though their structures are very similar, with a sulfur atom instead of an oxygen atom. It is a lustrous, white crystalline compound and is soluble in water and polar organic solvents.
Manufacturing Process:
Thiourea is manufactured using calcium cyanamide with hydrogen sulfide in the presence of carbon dioxide. Aqueous suspension are continuously added to the reaction vessel. Through stripping process, excess hydrogen sulfide was subsequently removed before the thiourea solution was filtered to remove precipitated calcium carbonate. The obtained filtrate was then evaporated using a rotary evaporator and thiourea crystallized on cooling.
