1,3-Propanediol, 2-methyl-2-propyl-
2-Methyl-2-propyl-1,3-propanediol
CAS: 78-26-2
Molecular Formula: C7H16O2
1,3-Propanediol, 2-methyl-2-propyl- - Names and Identifiers
1,3-Propanediol, 2-methyl-2-propyl- - Physico-chemical Properties
| Molecular Formula | C7H16O2 |
| Molar Mass | 132.2 |
| Density | 0.9744 (rough estimate) |
| Melting Point | 57-59 °C (lit.) |
| Boling Point | 230 °C/753 mmHg (lit.) |
| Flash Point | >230°F |
| Solubility | Chloroform (Slightly), Methanol (Slightly) |
| Vapor Presure | 0.00999mmHg at 25°C |
| Appearance | White crystal |
| Color | White Low Melting |
| BRN | 1734432 |
| pKa | 14.57±0.10(Predicted) |
| Storage Condition | Refrigerator |
| Refractive Index | 1.4474 (estimate) |
| MDL | MFCD00004696 |
| Physical and Chemical Properties | White crystals. Melting point 62-63 ℃(58-60 ℃), boiling point 230 ℃(100.4kPa), soluble in water. |
| Use | For pharmaceutical applications |
1,3-Propanediol, 2-methyl-2-propyl- - Risk and Safety
| Hazard Symbols | Xn - Harmful |
| Risk Codes | R36 - Irritating to the eyes R22 - Harmful if swallowed |
| Safety Description | S22 - Do not breathe dust. S24/25 - Avoid contact with skin and eyes. S39 - Wear eye / face protection. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. |
| WGK Germany | 1 |
| RTECS | TY9386000 |
1,3-Propanediol, 2-methyl-2-propyl- - Reference Information
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Use | for organic synthesis. Intermediate of the weak neuroleptic methyl propamide Diester. for pharmaceutical |
| production method | 2-methylvaleraldehyde is obtained by catalytic hydrogenation of 2-methyl-2-pentenal, then, the product is prepared by carrying out hydroxymethylation and reduction reaction with formaldehyde. The hydrogenation reaction of 2-methyl-2-pentenal was carried out at 100 ° C. And 1.3-1.5MPa, and the yield was 80%. After 2-methylvaleraldehyde was obtained, it was added to 36% formaldehyde, and sodium hydroxide solution was added dropwise at room temperature. The reaction was exothermic, and naturally warmed to 70 ℃, then heated to 90 ℃, fed for 1H, cooled to 60 ℃ and left to stand. The upper layer was washed with water, and the washing liquid was combined with the lower layer, extraction with benzene. The extraction liquid and the upper liquid are combined, and after distilling and recovering benzene, vacuum distillation is carried out to collect the 160 ℃(14.7kPa) fraction, which is 2-methyl -2-propyl -1, 3-propanediol, yield 93%. |
Last Update：2024-04-09 21:01:54
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View History
1,3-Propanediol, 2-methyl-2-propyl-
methoxyphenamine hydrochloride
PPD (Scintillator)
4-(4-Fluorobenzoyl)piperidine hydrochloridde
2-Cyclopropylisonicotinonitrile
2,3,4,5,6-五甲基苯-1磺酰氯
2,4-D丁酯乳油
methoxyphenamine hydrochloride
PPD (Scintillator)
4-(4-Fluorobenzoyl)piperidine hydrochloridde
2-Cyclopropylisonicotinonitrile
2,3,4,5,6-五甲基苯-1磺酰氯
2,4-D丁酯乳油