(2R,5S)-2,5-dimethoxytetrahydrofuran
2,5-Dimethoxytetrahydrofuran, mixture of cis- and trans isomers
CAS: 696-59-3
Molecular Formula: C6H12O3
(2R,5S)-2,5-dimethoxytetrahydrofuran - Names and Identifiers
(2R,5S)-2,5-dimethoxytetrahydrofuran - Physico-chemical Properties
| Molecular Formula | C6H12O3 |
| Molar Mass | 132.16 |
| Density | 1.023g/mLat 20°C(lit.) |
| Melting Point | -45 °C |
| Boling Point | 145-147°C(lit.) |
| Flash Point | 95°F |
| Water Solubility | 350 g/L (20 ºC) |
| Solubility | 300g/l |
| Vapor Presure | 5 hPa (20 °C) |
| Appearance | Liquid |
| Color | Clear colorless to slightly yellow |
| BRN | 104261 |
| PH | 5 (300g/l, H2O, 20℃) |
| Storage Condition | Store below +30°C. |
| Sensitive | Air & Light Sensitive |
| Explosive Limit | 2.0-12.3%(V) |
| Refractive Index | n20/D 1.418 |
| Physical and Chemical Properties | Colorless liquid. Boiling point 145-147 ℃,52-54 ℃(2.93kPa), relative density 1.023(20/4 ℃), refractive index 1.4182-1.4184, flash point 35 ℃. Can be miscible with water, ethanol, ether. Thermal decomposition. |
(2R,5S)-2,5-dimethoxytetrahydrofuran - Risk and Safety
| Risk Codes | R10 - Flammable R36/37/38 - Irritating to eyes, respiratory system and skin. R36 - Irritating to the eyes R20/21 - Harmful by inhalation and in contact with skin. |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S16 - Keep away from sources of ignition. |
| UN IDs | UN 1993 3/PG 3 |
| WGK Germany | 1 |
| TSCA | Yes |
| HS Code | 29321900 |
| Hazard Class | 3 |
| Packing Group | III |
| Toxicity | LD50 orally in Rabbit: 2040 mg/kg |
(2R,5S)-2,5-dimethoxytetrahydrofuran - Reference Information
| NIST chemical information | Information provided by: webbook.nist.gov (external link) |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| Uses | 2,5-dimethoxytetrahydrofuran is the raw material for the synthesis of tropin ketone. In the production process of tobinone, succinaldehyde obtained by hydrolysis of 2, 5-dimethoxytetrahydrofuran is one of the raw materials for the synthesis of tobinone. Because THF has low boiling point, good fluidity, strong solubility to many chemical substances, and good diffusion to the surface and interior of the resin, it is commonly known as "universal solvent". Widely used in plastics, rubber, coatings, adhesives, inks, textiles, pharmaceuticals and other industries. This product is an intermediate of the anticholinergic drug atropine sulfate. It is also used as a photographic film agent. Because THF has the characteristics of low boiling point, good fluidity, strong solubility to many chemical substances, and good diffusion to the surface and interior of the resin, it is commonly known as "universal solvent". Widely used in plastics, rubber, coatings, adhesives, inks, textiles, pharmaceuticals and other industries. |
| Production method | It is obtained by catalytic hydrogenation of 2, 5-dimethoxydihydrofuran ([332-77-4]). The product can also be prepared by etherification of furan with methanol and catalytic hydrogenation at close to normal pressure, but the yield is low. |
| spontaneous combustion temperature | >205°C |
Last Update：2024-04-09 02:00:04
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