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Chemical Name:
ETHYLAL;DIETHYLFORMAL;DIETHOXYMETHANE;diethoxy-methan;3,5-dioxaheptene;Methane, diethoxy-;1,1-Diethoxymethane;Ethoxymethoxy-ethane;Methylenediethylether;Methylenedioxydiethane
Molecular Formula:
Formula Weight:
MOL File:


Melting point:
-66.5 °C
Boiling point:
87-88 °C(lit.)
0.831 g/mL at 25 °C(lit.)
vapor density 
3.6 (vs air)
vapor pressure 
60 mm Hg ( 25 °C)
refractive index 
n20/D 1.373(lit.)
Flash point:
22 °F
storage temp. 
Flammables area
Clear colorless
explosive limit
Water Solubility 
4.2 G/100 ML
Stable. Highly flammable. Incompatible with strong oxidizing agents, strong acids.
CAS DataBase Reference
462-95-3(CAS DataBase Reference)
NIST Chemistry Reference
EPA Substance Registry System
Ethane, 1,1'-[methylenebis(oxy)] bis-(462-95-3)
  • Risk and Safety Statements
  • Hazard and Precautionary Statements (GHS)
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
Autoignition Temperature 346 °F
HS Code  2911 00 00
HazardClass  3
PackingGroup  II
Toxicity LD50 orally in Rabbit: 3536 mg/kg LD50 dermal Rat > 16600 mg/kg
Signal word: Danger
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H225 Highly Flammable liquid and vapour Flammable liquids Category 2 Danger P210,P233, P240, P241, P242, P243,P280, P303+ P361+P353, P370+P378,P403+P235, P501
H303 May be harmfulif swallowed Acute toxicity,oral Category 5 P312
H311 Toxic in contact with skin Acute toxicity,dermal Category 3 Danger P280, P302+P352, P312, P322, P361,P363, P405, P501
H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning P264, P280, P302+P352, P321,P332+P313, P362
H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P
H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning
Precautionary statements:
P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking.
P233 Keep container tightly closed.
P240 Ground/bond container and receiving equipment.
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P264 Wash hands thoroughly after handling.
P264 Wash skin thouroughly after handling.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P303+P361+P353 IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P370+P378 In case of fire: Use … for extinction.
P405 Store locked up.
P403+P235 Store in a well-ventilated place. Keep cool.
P501 Dispose of contents/container to..…

DIETHOXYMETHANE price More Price(9)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 47675 Formaldehyde diethyl acetal absolute, over molecular sieve (H2O ≤0.01%), ≥99.0% (GC) 462-95-3 100ml-f $46.7 2018-11-13 Buy
Sigma-Aldrich 47675 Formaldehyde diethyl acetal absolute, over molecular sieve (H2O ≤0.01%), ≥99.0% (GC) 462-95-3 500ml-f $185 2018-11-13 Buy
TCI Chemical D0457 Ethylal >99.0%(GC) 462-95-3 25mL $12 2018-11-22 Buy
TCI Chemical D0457 Ethylal >99.0%(GC) 462-95-3 500mL $49 2018-11-22 Buy
Alfa Aesar B23134 Diethoxymethane, 99%, stab. with 100ppm BHT 462-95-3 100ml $28.5 2018-11-13 Buy

DIETHOXYMETHANE Chemical Properties,Uses,Production

Chemical Properties

colourless liquid


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.

General Description

A colorless volatile liquid with an agreeable odor. Less dense than water. Flash point below 10°F. Vapors heavier than air. May be narcotic in high concentrations. Used as a solvent and in the manufacture of cosmetics.

Air & Water Reactions

Highly flammable. Soluble in water.

Reactivity Profile

DIETHOXYMETHANE, an acetal, is incompatible with strong oxidizing agents and acids. Breaks down to formaldehyde and ethanol in acidic solutions.

Health Hazard

Inhalation or contact with material may irritate or burn skin and eyes. Fire may produce irritating, corrosive and/or toxic gases. Vapors may cause dizziness or suffocation. Runoff from fire control may cause pollution.

Fire Hazard

HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames. Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers. Runoff to sewer may create fire or explosion hazard. Containers may explode when heated. Many liquids are lighter than water.

Safety Profile

Moderately toxic by ingestion. Flammable when exposed to heat or flame; can react vigorously with oxidizers. When heated to decomposition it emits acrid smoke and irritating fumes.

DIETHOXYMETHANE Preparation Products And Raw materials

Raw materials

Preparation Products


Global( 119)Suppliers
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Mainchem Co., Ltd.
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Energy Chemical 021-58432009 / 400-005-6266
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