A3188012
Diethoxy methane , 99% , 462-95-3
Synonym(s):
Diethoxymethane;Ethylal;Formaldehyde diethyl acetal
CAS NO.：462-95-3
Empirical Formula: C5H12O2
Molecular Weight: 104.15
MDL number: MFCD00009246
EINECS: 207-330-6
Update time: 2022-07-08
PRODUCT Properties
| Melting point: | -66.5 °C |
| Boiling point: | 87-88 °C (lit.) |
| Density | 0.831 g/mL at 25 °C (lit.) |
| vapor density | 3.6 (vs air) |
| vapor pressure | 60 mm Hg ( 25 °C) |
| refractive index | n |
| Flash point: | 22 °F |
| storage temp. | Store below +30°C. |
| solubility | 91g/l |
| form | Liquid |
| color | Clear colorless |
| Odor | Very diffusive, sweet-ethereal odor, somewhat reminiscent of Acetone and Methyl acetate |
| Odor Type | Sweet, ethereal, slightly fruity taste. Not very powerful |
| explosive limit | 1.5%(V) |
| Water Solubility | 4.2 G/100 ML |
| BRN | 1697253 |
| Dielectric constant | 2.5299999999999998 |
| Stability: | Stable. Highly flammable. Incompatible with strong oxidizing agents, strong acids. |
| InChIKey | KLKFAASOGCDTDT-UHFFFAOYSA-N |
| LogP | 0.84 |
Description and Uses
Diethoxymethane (DEM) is offered by Eastman Chemical Company as a cost-effective replacement solvent for monoglyme (1,2- dimethoxyethane) and methylal. The DEM diether is stable under alkaline conditions, but can be cleaved by strong acids. Diethoxymethane can be used as a chemical intermediate in many organic synthesis reactions. Diethoxymethane is useful as a solvent in lithium batteries with nonaqueous electrolytes, as a solvent for polymeric materials, and as a fuel additive. As a chemical intermediate DEM can act as an ethoxymethylating reagent for alcohols and phenols and serve as a source for formaldehyde in organic synthesis.
Safety
| Symbol(GHS) |  GHS02 |
| Signal word | Danger |
| Hazard statements | H225 |
| Precautionary statements | P210-P233-P240-P241-P242-P243 |
| Hazard Codes | F,Xi |
| Risk Statements | 11-36/37/38 |
| Safety Statements | 16-26-36-9-37/39-33 |
| RIDADR | UN 2373 3/PG 2 |
| WGK Germany | 2 |
| RTECS | PA8500000 |
| F | 3 |
| Autoignition Temperature | 346 °F |
| TSCA | Yes |
| HS Code | 2911 00 00 |
| HazardClass | 3 |
| PackingGroup | II |
| Toxicity | LD50 orally in Rabbit: 3536 mg/kg LD50 dermal Rat > 16600 mg/kg |
