Dazomet (thiazone, 3,5-dimethyltetrahydro-1,3,5-thiadiazintion-2) is a white or dark gray odorless crystalline substance [1] . It is soluble in acetone , chloroform , cyclohexanol ; poorly soluble in water , ethanol and benzene . Toxic .
| Dazomet | |
|---|---|
 | |
| Are common | |
| Systematic name | 3,5-dimethyltetrahydro-1,3,5-thiadiazintion-2 |
| Traditional names | dazomet, thiazon |
| Chem. formula | C 5 H 10 N 2 S 2 |
| Rat formula | C 5 H 10 N 2 S 2 |
| Physical properties | |
| condition | Solid |
| Molar mass | 162.3 g / mol |
| Density | 1.3 g / cm³ |
| Thermal properties | |
| T. melt. | 104 ° C |
| T. bale. | 222.3 ° C |
| T. aux. | 93 ° C |
| Steam pressure | 3.6510 -9 atm |
| Chemical properties | |
| Solubility in water | 0.3 g / 100 ml |
| Acetone solubility | 1.73 g / 100 ml |
| Solubility in benzene | 5.3 g / 100 ml |
| Chloroform solubility | 39.1 g / 100 ml |
| Solubility in cyclohexanol | 40 g / 100 ml |
| Optical properties | |
| Refractive index | 1,655 |
| Classification | |
| Reg. CAS number | 533-74-4 |
| PubChem | |
| Reg. EINECS number | |
| Smiles | |
| Inchi | |
| Reg. EC number | 613-008-00-X |
| RTECS | XI2800000 |
| Chebi | |
| UN number | 2588 |
| ChemSpider | |
| Security | |
| MPC | 10 mg / m 3 |
| LD 50 | 79 mg / kg (cats), 45 mg / kg (mice), 60.8 mg / kg (rats). |
| Signal word | Dangerously |
| GHS icons |  [[File: | 50px | GHS icon ""]] |
Prepared by reacting CH 3 NHC (S) SNa with CH 3 NH 2 and formalin .
Content
Application
It is used as a nematicide when applied to the soil for the cultivation of vegetables, potatoes , onions. It also has fungicidal and herbicidal properties. It is used as a wetting powder (thiazone, milon).
Toxicity
LD 50 for mice is 45, for rats - 60.8 mg / kg. Irritating to mucous membranes. Precautions are the same as with medium toxic pesticides. Avoid contact with skin and eyes; In case of contact, rinse immediately with plenty of water. MAC in v. R. h. 2 mg / m 3 , in potatoes, fish, vegetables - 0.5 mg / kg, in reservoirs - I 0.01 mg / l [2] .
Literature
- I.L. Knunyants. Chemical encyclopedic dictionary / E.V. Vonsky, A.A. Gusev, N.M. Zhavoronkov, etc. - M .: Soviet Encyclopedia, 1983. - P. 792.
Notes
- ↑ Thiazon (dazomet) (inaccessible link)
- ↑ Dazomet