2,2-DIMETHOXYPROPANE
2,2-Dimethoxypropane
CAS: 77-76-9
Molecular Formula: C5H12O2
2,2-DIMETHOXYPROPANE - Names and Identifiers
2,2-DIMETHOXYPROPANE - Physico-chemical Properties
| Molecular Formula | C5H12O2 |
| Molar Mass | 104.15 |
| Density | 0.847 g/mL at 25 °C (lit.) |
| Melting Point | -47 °C |
| Boling Point | 83 °C (lit.) |
| Flash Point | 12°F |
| Water Solubility | 18 g/100 mL (25 ºC) |
| Solubility | 180g/l |
| Vapor Presure | 60 mm Hg ( 15.8 °C) |
| Vapor Density | 3.59 (vs air) |
| Appearance | Liquid |
| Specific Gravity | 0.852 (20/4℃) |
| Color | Clear colorless |
| BRN | 635678 |
| Storage Condition | Store below +30°C. |
| Stability | Stable. Highly flammable - note low flash point. Vapour may form an explosive mixture with air. May form explosive peroxides when exposed to air. Incompatible with strong oxidizing agents. |
| Explosive Limit | 31%, 58°F |
| Refractive Index | n20/D 1.378(lit.) |
| Physical and Chemical Properties | Density 0.847 melting point -47°C boiling point 83°C refractive index 1.376-1.378 flash point -5°C water-soluble 18g/100 mL (25°C) |
| Use | Used as pharmaceutical intermediates, mainly used for hydroxyl protection and dehydration |
2,2-DIMETHOXYPROPANE - Risk and Safety
| Risk Codes | R11 - Highly Flammable R36 - Irritating to the eyes R36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S9 - Keep container in a well-ventilated place. S37/39 - Wear suitable gloves and eye/face protection S33 - Take precautionary measures against static discharges. S16 - Keep away from sources of ignition. S33,37/39 - |
| UN IDs | UN 1993 3/PG 2 |
| WGK Germany | 2 |
| FLUKA BRAND F CODES | 10-21 |
| TSCA | Yes |
| HS Code | 29110000 |
| Hazard Class | 3 |
| Packing Group | II |
| Toxicity | LD50 orally in Rabbit: > 2260 mg/kg LD50 dermal Rat > 2100 mg/kg |
2,2-DIMETHOXYPROPANE - 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) |
| Introduction | 2, 2-dimethoxypropane (DMP) appearance colorless transparent liquid, purity blue 99% (GC), moisture <0.5%, relative density 0.8490-0.8520, refractive index 1.3760-1.3790, micro-soluble in water, soluble in most organic solvents, this product is flammable, irritating, hazardous chemicals. |
| Application | 2, 2-dimethoxypropane (DMP) it is the key hydroxyl protective agent, dehydrating agent, condensing agent and cyclizing agent in the new development of antibiotic semi-synthesis process. Its protective performance is better than common dichlorosulfoxide, P-methoxybenzaldehyde and so on. DMP as an excellent protective agent, can replace the import of similar products, using it to protect the production of new antibiotics, product quality, high drug efficacy, side effects, fast absorption, low cost. It is widely used in the synthesis of medicines, pesticides, spices and so on. |
| purpose | used as protective agent, condensing agent, cyclizing agent, dehydrating agent, etc, there are a wide range of uses in the synthesis of fragrances and the like. it can be used as a hydroxyl group protecting and dehydrating agent, a condensing agent, a cyclizing agent and the like, and is widely used in the synthesis of medicines, pesticides, perfumes and the like. used as pharmaceutical intermediates, mainly used for hydroxyl protection and dehydration |
| production method | 2, 2-dimethoxypropane was synthesized by an indirect method. The synthesis of 2, 2-dimethoxypropane from 2,2 dimethyl -1, 3-dioxolane (DMD) from ethylene glycol and acetone was studied. Using dichloromethane as water-carrying agent and anhydrous ferric sulfate as catalyst, DMP was synthesized after DMD was synthesized and exchanged with methanol. The overall yield of the two-step reaction was 60%. |
Last Update：2024-04-09 20:48:19
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