sym-dimethylurea
1,3-Dimethylurea
CAS: 96-31-1
Molecular Formula: C3H8N2O
sym-dimethylurea - Names and Identifiers
| Name | 1,3-Dimethylurea |
| Synonyms | 1,3-Dimethylurea sym-dimethylurea N,N?Dimethylurea n,n'-dimethyl-ure N,N'-dimethylurea Dimethyl Urea 1,3 symmetricdimethylurea symmetric dimethylurea n,n'-dimethylharnstoff Symmetric dimethylurea N,N'-Dimethylharnstoff N,N-dimethylurea (sym.) 1,3-Dimethylurea Factory N,N'-Dimethylurea Factory 1,3-Dimethylurea COA TDS MSDS |
| CAS | 96-31-1 |
| EINECS | 202-498-7 |
| InChI | InChI=1/C3H8N2O/c1-4-3(6)5-2/h1-2H3,(H2,4,5,6) |
| InChIKey | MGJKQDOBUOMPEZ-UHFFFAOYSA-N |
sym-dimethylurea - Physico-chemical Properties
| Molecular Formula | C3H8N2O |
| Molar Mass | 88.11 |
| Density | 1.142 |
| Melting Point | 101-104°C(lit.) |
| Boling Point | 268-270°C(lit.) |
| Flash Point | 157 °C |
| Water Solubility | 765 g/L (21.5 ºC) |
| Solubility | Soluble in water, ethanol, acetone, benzene and ethyl acetate, etc., insoluble in ether and gasoline. |
| Vapor Presure | 6 hPa (115 °C) |
| Appearance | Crystallization |
| Color | White |
| BRN | 1740672 |
| pKa | 14.57±0.46(Predicted) |
| PH | 9.0-9.5 (100g/l, H2O, 20℃) |
| Storage Condition | Store below +30°C. |
| Refractive Index | 1.4715 (estimate) |
| MDL | MFCD00008286 |
| Physical and Chemical Properties | Character: gray-white, thin, thin, crystalline. melting point 101~104 ℃ boiling point 268~270 ℃ relative density 1.142 solubility in water, ethanol, acetone, benzene and ethyl acetate, insoluble in ether and gasoline. |
| Use | Used as an intermediate in the synthesis of theophylline and caffeine, and also used in the production of fiber treatment agents |
sym-dimethylurea - Risk and Safety
| Risk Codes | R62 - Possible risk of impaired fertility R63 - Possible risk of harm to the unborn child R68 - Possible risk of irreversible effects |
| Safety Description | S22 - Do not breathe dust. S24/25 - Avoid contact with skin and eyes. |
| WGK Germany | 1 |
| RTECS | YS9868000 |
| FLUKA BRAND F CODES | 10-21 |
| TSCA | Yes |
| HS Code | 29241900 |
| Toxicity | LD50 orally in Rabbit: 4000 mg/kg |
sym-dimethylurea - Nature
Open Data Verified Data
is a gray-white flake crystal. The melting point was 101-104 °c. Boiling point 268~270 deg C. The relative density was 1. 142. Soluble in water, ethanol, acetone, benzene and ethyl acetate, do not dissolve in ether and gasoline. Nitrogen can be generated by reaction with sodium hypochlorite in the presence of a base. It can also react with chlorine, aldehyde, ketone, inorganic acid, nitrous acid and the like.
Last Update：2025-06-10 22:55:16
sym-dimethylurea - Preparation Method
Open Data Verified Data
It is produced industrially by the interaction of molten urea with monomethylamine. The urea is put into the melting tank, heated to 130~135 ℃ to melt it, then transferred to the reaction Tower preheated to 110~120 ℃, and then heated to 150~175 ℃, the purified monomethylamine gas was started to be introduced, and the reaction was finished after all the monomethylamine was passed, so that the final product was obtained.
Last Update：2022-01-01 10:36:38
sym-dimethylurea - Introduction
Insoluble in ether, solubility in water: 765g/l (21.5 c)
Last Update：2022-10-16 17:30:21
sym-dimethylurea - Application
Open Data Verified Data
used as an intermediate in the synthesis of theophylline and caffeine. It is also currently used for the production of fiber treatment agents.
Last Update：2025-08-19 16:24:40
sym-dimethylurea - Safety
Open Data Verified Data
This product is slightly toxic. The use of paper bags, each bag of 45kg. According to the general chemical storage and transportation.
Last Update：2022-01-01 10:36:39
sym-dimethylurea - Reference Information
| chemical properties | off-white flake crystals. Soluble in water, ethanol, acetone, benzene and ethyl acetate, etc., insoluble in ether and gasoline. |
| use | used as an intermediate for the synthesis of theophylline and caffeine, and also used in the production of fiber treatment agent |
| production method | |
| NIST chemical information | The information is: webbook.nist.gov provides (external link) |
| EPA chemical information | The information is: ofmpub.epa.gov provides (external link) |
| spontaneous combustion temperature | 400°C |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov provided (external link) |
Last Update：2024-04-09 15:16:35
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