Thiourea
|
|||
| Names | |||
|---|---|---|---|
|
IUPAC name
Thiourea
|
|||
| Other names
Thiocarbamide
|
|||
| Identifiers | |||
62-56-6 
|
|||
| 3D model (Jmol) | Interactive image | ||
| 605327 | |||
| ChEBI |
CHEBI:36946
|
||
| ChEMBL |
ChEMBL260876
|
||
| ChemSpider |
2005981
|
||
| ECHA InfoCard | 100.000.494 | ||
| 1604 | |||
| KEGG |
C14415
|
||
| PubChem | 2723790 | ||
| RTECS number | YU2800000 | ||
| UNII |
GYV9AM2QAG
|
||
| UN number | 2811 | ||
|
|||
|
|||
| Properties | |||
| CH4N2S | |||
| Molar mass | 76.12 g/mol | ||
| Appearance | white solid | ||
| Density | 1.405 g/ml | ||
| Melting point | 182 °C (360 °F; 455 K) | ||
| 142 g/l (25 °C) | |||
| -42.4·10−6 cm3/mol | |||
| Hazards | |||
|
EU classification (DSD)
|
Carc. Cat. 3 Repr. Cat. 3 Harmful (Xn) Dangerous for the environment (N) |
||
| R-phrases | R22, R40, R51/53, R63 | ||
| S-phrases | (S2), S36/37, S61 | ||
| NFPA 704 | |||
| Related compounds | |||
|
Related compounds
|
Urea | ||
|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
|
|||
 (what is  ?) |
|||
| Infobox references | |||
Thiourea (/ˌθaɪəjʊˈriːə, ˌθaɪoʊ-/) is an organosulfur compound with the formula SC(NH2)2 . 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 is a reagent in organic synthesis. "Thioureas" refers to a broad class of compounds with the general structure (R1R2N)(R3R4N)C=S. Thioureas are related to thioamides, e.g. RC(S)NR2, where R is methyl, ethyl, etc.
Thiourea is a planar molecule. The C=S bond distance is 1.60±0.1 Å for thiourea (as well as many of its derivatives). The material has the unusual property of changing to ammonium thiocyanate upon heating above 130 °C. Upon cooling, the ammonium salt converts back to thiourea.
...
Wikipedia