1,3-Dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone
Synonym(s):N,N′-Dimethylpropylene urea;1,3-Dimethyl-2-oxohexahydropyrimidine;1,3-Dimethyltetrahydro-2(1H)-pyrimidinone;Dimethylpropyleneurea, DMPU;DMPU
- CAS NO.：7226-23-5
- Empirical Formula: C6H12N2O
- Molecular Weight: 128.17
- MDL number: MFCD00006550
- EINECS: 230-625-6
- SAFETY DATA SHEET (SDS)
- Update Date: 2025-10-20 22:13:37
What is 1,3-Dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone?
Chemical properties
1,3-Dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone is clear colorless to slightly yellowish liquid
The Uses of 1,3-Dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone
1,3-Dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone is a versatile organic solvent in and less toxic than HMPA. It is mainly applied in the synthesis of pharmaceuticals and agrochemicals. DMPU is also used in the electronics industry.
The Uses of 1,3-Dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone
1,3-Dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone is a versatile solvent used in the N-alkylation of chiral and O-alkylation of aldoses. It is involved in the preparation of poly(aryl ethers). It is a cyclic urea and used as a polar aprotic organic solvent. Further, it reacts with trifluoro-methanesulfonic acid anhydride to prepare 2,2'-oxy-bis(1,3-dimethyl-tetrahydropyrimidinium) bis(trifluoromethanesulfonate).
The Uses of 1,3-Dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone
Versatile solvent employed in N-alkylation of chiral, primary amines, O-alkylation of aldoses, and in the synthesis of poly(aryl ethers).
Flammability and Explosibility
Non flammable
Properties of 1,3-Dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone
| Melting point: | -20 °C |
| Boiling point: | 146 °C44 mm Hg(lit.) |
| Density | 1.06 g/mL at 25 °C(lit.) |
| vapor pressure | 0.5 hPa (57 °C) |
| refractive index | n |
| Flash point: | 121 °C |
| storage temp. | Store below +30°C. |
| solubility | Chloroform (Slightly), Ethyl Acetate (Slightly) |
| pka | -0.65±0.20(Predicted) |
| form | Liquid |
| color | Clear colorless to slightly yellow |
| PH | 11 (100g/l, H2O, 20℃) |
| explosive limit | 1.6-9.3%(V) |
| Water Solubility | soluble |
| Sensitive | Hygroscopic |
| BRN | 110562 |
| Dielectric constant | 36.119999999999997 |
| Stability: | Hygroscopic |
| CAS DataBase Reference | 7226-23-5(CAS DataBase Reference) |
| EPA Substance Registry System | 2(1H)-Pyrimidinone, tetrahydro-1,3-dimethyl- (7226-23-5) |
Safety information for 1,3-Dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone
| Signal word | Danger |
| Pictogram(s) |
 Corrosion Corrosives GHS05  Exclamation Mark Irritant GHS07  Health Hazard GHS08 |
| GHS Hazard Statements |
H302:Acute toxicity,oral H318:Serious eye damage/eye irritation |
| Precautionary Statement Codes |
P201:Obtain special instructions before use. P280:Wear protective gloves/protective clothing/eye protection/face protection. P308+P313:IF exposed or concerned: Get medical advice/attention. |
Computed Descriptors for 1,3-Dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone
| InChIKey | GUVUOGQBMYCBQP-UHFFFAOYSA-N |
1,3-Dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone manufacturer
JSK Chemicals
2Y
Phone:+91-9879767984
Whatsapp: +91-9879767970
product: 7226-23-5 N,N'-Dimethylpropyleneurea, 99% 99%
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