N,N'-Diethylthiourea
N,N'-Diethylthiourea
CAS: 105-55-5
Molecular Formula: C5H12N2S
N,N'-Diethylthiourea - Names and Identifiers
| Name | N,N'-Diethylthiourea |
| Synonyms | thiate h pennzone e Diethylthiourea DIETHYL THIOUREA Diethyl-2-thiourea 1,3-diethylthiourea N,N'-Diethylthiourea n,n'-diethyl-thioure n,n'-diethylthiouree 1,3-diethyl-2-thiouree 1,3-Diethyl-2-thiourea 1,3-diethyl-2-thio-ure Rubber Accelerator DETU 1,3-diethylthiourea[qr] N,N'-diethylthiocarbamide 1,3-diethyl-2-thiourea[qr] n,n'-diethylthiocarbamide[qr] |
| CAS | 105-55-5 |
| EINECS | 203-308-5 |
| InChI | InChI=1/C5H12N2S/c1-3-6-5(8)7-4-2/h3-4H2,1-2H3,(H2,6,7,8) |
| InChIKey | FLVIGYVXZHLUHP-UHFFFAOYSA-N |
N,N'-Diethylthiourea - Physico-chemical Properties
| Molecular Formula | C5H12N2S |
| Molar Mass | 132.23 |
| Density | 1,12 g/cm3 |
| Melting Point | 76-78°C(lit.) |
| Boling Point | 245°C (estimate) |
| Flash Point | 186 °C |
| Water Solubility | 38 g/L (20 ºC) |
| Solubility | 42g/l |
| Vapor Presure | 0.001Pa at 25℃ |
| Appearance | White to Red Solid |
| Color | White to Off-White |
| BRN | 773905 |
| pKa | 14.47±0.70(Predicted) |
| PH | 7 (38g/l, H2O, 20℃) |
| Storage Condition | Store below +30°C. |
| Stability | Stable. May be air sensitive. Incompatible with strong oxidizing agents. |
| Refractive Index | 1.5300 (estimate) |
| MDL | MFCD00004925 |
| Physical and Chemical Properties | Melting point 76-78°C(lit.) density 1,12g/cm3 flash point 186°C water solubility 38g/L (20 oC) |
N,N'-Diethylthiourea - Risk and Safety
| Risk Codes | R22 - Harmful if swallowed R40 - Limited evidence of a carcinogenic effect R45 - May cause cancer R20/21/22 - Harmful by inhalation, in contact with skin and if swallowed. |
| Safety Description | S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S36/37 - Wear suitable protective clothing and gloves. S53 - Avoid exposure - obtain special instructions before use. S24/25 - Avoid contact with skin and eyes. |
| WGK Germany | 2 |
| RTECS | YS9800000 |
| TSCA | Yes |
| HS Code | 29309070 |
N,N'-Diethylthiourea - Nature
Open Data Verified Data
white or light yellow powder. The melting point was greater than 70 °c. Hygroscopic. Soluble ethanol, acetone, soluble in water, difficult to dissolve in gasoline. In case of high heat, open flame or contact with oxidant, there is a risk of combustion.
Last Update：2024-01-02 23:10:35
N,N'-Diethylthiourea - Preparation Method
Open Data Verified Data
The aqueous ethylamine solution is reacted with carbon disulfide at a temperature of 20 to 30 ° C. To form N-ethyldithiocarbamate ethylamine salt. The material in 96~100 ℃ decomposition, release of hydrogen sulfide gas, and then after separation, washing, crystallization, grinding, drying to get the finished product.
Last Update：2022-01-01 09:30:02
N,N'-Diethylthiourea - Use
Open Data Verified Data
high efficiency corrosion inhibitor can be used as a corrosion inhibitor for ferrous metal by adding acid solution alone, and can also be mixed with amino sulfonic acid and citric acid to make a solid cleaning agent. It is also used as a copper dissolution promoter.
Last Update：2022-01-01 09:30:03
N,N'-Diethylthiourea - Safety
Open Data Verified Data
store in a cool, ventilated warehouse. Keep away from fire and heat source. Protection from direct sunlight. Keep the container sealed. It should be stored separately from oxidant, acids and edible chemical raw materials.
Last Update：2022-01-01 09:30:03
N,N'-Diethylthiourea - Reference Information
| LogP | 0.57 |
| (IARC) carcinogen classification | 3 (Vol. 79) 2001 |
| NIST chemical information | Information provided by: webbook.nist.gov (external link) |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| use | this product is a thiourea accelerator, which is generally obtained by the reaction of amine carbon disulfide. the most commonly used varieties are ethylenethiourea (NA-22) and N,N'-di-n-butyl thiourea (DBTU), etc. This kind of accelerator has low promotion effect and poor anti-scorch performance, so it is rarely used for diene rubber, but in some special cases, such as the use of sulfur sulphide and other sulfur donors When it is used as an active agent. Thiourea accelerators have unique efficacy for the vulcanization of chloroprene rubber, and can produce chloroprene vulcanizates with good tensile strength, hardness, compression set and other properties. Compared with NA-22, diethylthiourea has faster scorching and vulcanization, but has better vulcanization flatness. The product is easy to disperse and does not spray frost. When the dosage is large, high temperature and high speed vulcanization can be carried out, especially suitable for continuous vulcanization of pressed products. This product is also an accelerator for butyl rubber and a vulcanization active agent for ethylene propylene ternary rubber. It can activate thiazole and hyposulfonamide promoters in natural gum and butyl aniline, and has antioxidant effect on natural gum, chloroprene gum, nitrile gum and styrene butadiene gum. Diethyl thiourea is also used to formulate corrosion inhibitor Rodine 31A |
| Production method | is obtained by the reaction of ethylamine and carbon disulfide. |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-10 22:29:15
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