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Dimethoxymethane structure
Chemical Name:
FORMAL;Metylal;METHYLAL;(CH3O)2CH2;Anesthenyl;dioxapentane;Methyl formal;DIMETHYLFORMAL;metylal(polish);dimethoxy-methan
Molecular Formula:
Formula Weight:
MOL File:

Dimethoxymethane Properties

Melting point:
-105 °C
Boiling point:
41-43 °C
0.860 g/mL at 20 °C(lit.)
vapor density 
2.6 (vs air)
vapor pressure 
6.38 psi ( 20 °C)
refractive index 
n20/D 1.354
Flash point:
-18 °C
storage temp. 
32.3 g/100 mL (16°C)
Clear colorless
Mild, ethereal; chloroform-like.
pH (12.5vol % , 25℃) : 4.5~6.6
explosive limit
Water Solubility 
32.3 g/100 mL (16 ºC)
Moisture Sensitive
Henry's Law Constant
(x 10-4 atm?m3/mol): 1.73 at 25 °C (Hine and Mookerjee, 1975)
Exposure limits
NIOSH REL: TWA 1,000 ppm (3,100 mg/m3), IDLH 2,200 ppm; OSHA PEL: TWA 1,000 ppm; ACGIH TLV: TWA 1,000 ppm (adopted).
Stable. Extremely flammable. Readily forms explosive mixtures with air. Note low flash point and wide explosive limits. Incompatible with strong oxidizing agents, strong acids. May form explosive peroxides upon exposure to air.
CAS DataBase Reference
109-87-5(CAS DataBase Reference)
EWG's Food Scores
NIST Chemistry Reference
Methane, dimethoxy-(109-87-5)
EPA Substance Registry System
Dimethoxymethane (109-87-5)
  • Risk and Safety Statements
Signal word  Danger
Hazard statements  H315-H319-H335-H336-H225
Precautionary statements  P233-P240-P241+P242+P243-P261-P264-P271-P280-P302+P352+P332+P313+P362+P364-P304+P340+P312-P305+P351+P338+P337+P313-P403+P233-P405-P501-P280a-P303+P361+P353-P305+P351+P338-P501a-P210-P370+P378-P403+P235
Hazard Codes  F,Xi
Risk Statements  11-19-36-36/37/38
Safety Statements  16-26-33-7/9-37/39
RIDADR  UN 1234 3/PG 2
WGK Germany  1
RTECS  PA8750000
Autoignition Temperature 459 °F
HS Code  2911 00 00
HazardClass  3
PackingGroup  II
Toxicity LD50 orally in Rabbit: 6653 mg/kg
NFPA 704
1 1

Dimethoxymethane price More Price(16)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 88789 Formaldehyde dimethyl acetal analytical standard 109-87-5 1ml-f $31.1 2019-12-02 Buy
Sigma-Aldrich 47676 Formaldehyde dimethyl acetal absolute, over molecular sieve (H2O ≤0.01%), ≥99.0% (GC) 109-87-5 250ml $44.4 2019-12-02 Buy
TCI Chemical D0637 Dimethoxymethane >98.0%(GC) 109-87-5 25mL $13 2020-06-24 Buy
TCI Chemical D0637 Dimethoxymethane >98.0%(GC) 109-87-5 500mL $27 2020-06-24 Buy
Alfa Aesar A12055 Dimethoxymethane, 98% 109-87-5 100ml $23.2 2020-06-24 Buy

Dimethoxymethane Chemical Properties,Uses,Production

Chemical Properties

Methylal is a low-boiling solvent, stable in the presence of alkalis and mild acids, and to high temperatures and pressures. It differs from other ethers in that it forms only minute omounts of peroxides. It will dissolve such synthetic resins as nitrocellulose, cellulose acetate and propionate, ethyl cellulose, vinyl, "Epons" and polystyrene, and also many of the natural gums and waxes. Methylal as a latent solvent is activated by the addition of esters, ketones or alcohols. Its evaporation rate, twice that of acetone, places this ether in a class with such solvents as acetone, methyl acetate and ethyl acetate in resin formulations.

Chemical Properties

Methylal is a colorless liquid with a pungent odor.

Physical properties

Colorless liquid with a pungent, chloroform-like odor


In perfumery; manufacture of artificial resins; reaction medium for Grignard and Reppe reactions.


Methylal is a valuable extraction solvent for pharmaceutical products and a stable, inexpensive solvent for Grignard reactions. Methylal is stable under alkaline and mild acidic conditions.


ChEBI: An acetal that is the dimethyl acetal derivative of formaldehyde.

General Description

A clear colorless liquid with a chloroform-like odor. Flash point 0°F. Boiling point 42.3°C. Density 0.864 g / cm3 at 68°F (20°C). Vapors heavier than air.

Air & Water Reactions

Highly flammable. Water soluble.

Reactivity Profile

Dimethoxymethane, an acetal, is incompatible with strong oxidizing agents and acids . Breaks down to formaldehyde and methanol in acidic solutions. A very dangerous fire hazard when exposed to heat, flame or oxidizing agents. May ignite or explode if heated with oxygen [Lewis].


Flammable, dangerous fire and explosion risk. Toxic by ingestion and inhalation. Eye irritant and central nervous system impairment.

Health Hazard

VAPOR: Irritating to eyes, nose and throat. Harmful if inhaled. LIQUID: Irritating to skin and eyes. Harmful if swallowed.

Fire Hazard

FLAMMABLE. Irritating gases may be produced when heated. Containers may explode in fire. Flashback along vapor trail may occur. Vapor may explode if ignited in an enclosed area. Irritating formaldehyde gas may be present in smoke.

Chemical Reactivity

Reactivity with Water: No reaction; Reactivity with Common Materials: No reaction; Stability During Transport: Stable; Neutralizing Agents for Acids and Caustics: Not pertinent; Polymerization: Not pertinent; Inhibitor of Polymerization: Not pertinent.

Safety Profile

Moderately toxic by subcutaneous route. Mildly toxic by ingestion and inhalation. Can cause injury to lungs, liver, kidneys, and the heart. A narcotic and anesthetic in high concentrations. A very dangerous fire hazard when exposed to heat, flame, or oxidzers. Moderately explosive when exposed to heat or flame. May ignite or explode when heated with oxygen. To fight fire, use foam, CO2, dry chemical. When heated to decomposition it emits acrid smoke and irritating fumes. See also ETHERS.

Potential Exposure

Vapors may form explosive mixture with air. Methylal may be able to form unstable and explosive peroxides. Heating may cause explosion. Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids, oxoacids, epoxides. Hydrolyzes readily in presence of acids to generate aldehydes.


Methylal is a by-product in the synthesis of trioxane, an intermediate in the manufacture of polyacetal plastics (Albert et al., 2001).


UN1234 Methylal, Hazard Class: 3; Labels: 3-Flammable liquid

Purification Methods

It is a volatile flammable liquid which is soluble in three parts of H2O, and is readily hydrolysed by acids. Purify it by shaking with an equal volume of 20% aqueous NaOH, stand for 20minutes, dry over fused CaCl2, filter and fractionally distil it through an efficient column. Store it over molecular sieves. [Buchler et al. Org Synth Coll Vol III 469 1955, Rambaud & Besserre Bull Soc Chim Fr 45 1955, IR: Wilmshurst Can J Chem 36 285 1958, Beilstein 1 IV 3026.]


If this chemical gets into the eyes, remove any contact lenses at once and irrigate immediately for at least 15 minutes, occasionally lifting upper and lower lids. Seek medical attention immediately. If this chemical contacts the skin, remove contaminated clothing and wash immediately with soap and water. Seek medical attention immediately. If this chemical has been inhaled, remove from exposure, begin rescue breathing (using universal precautions, including resuscitation mask) if breathing has stopped and CPR if heart action has stopped. Transfer promptly to a medical facility. When this chemical has been swallowed, get medical attention. Give large quantities of water and induce vomiting. Do not make an unconscious person vomit

Waste Disposal

Concentrated waste containing no peroxides: discharge liquid at a controlled rate near a pilot flame. Concentrated waste containing peroxides: perforation of containers of the waste from a safe distance followed by open burning.

Dimethoxymethane Preparation Products And Raw materials

Raw materials

Preparation Products

Dimethoxymethane Suppliers

Global( 226)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Henan DaKen Chemical CO.,LTD.
+86-371-55531817 CHINA 21837 58
Shanghai Bojing Chemical Co.,Ltd.
+86-21-37127788 CHINA 497 55
Henan Tianfu Chemical Co.,Ltd.
0371-55170693 CHINA 22625 55
Hefei TNJ Chemical Industry Co.,Ltd.
86-0551-65418684 18949823763
86-0551-65418684 China 2655 55
career henan chemical co
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Xiamen AmoyChem Co., Ltd
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Hubei xin bonus chemical co. LTD
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View Lastest Price from Dimethoxymethane manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2020-01-02 Dimethoxy methane
US $1.00 / KG 1KG 99% 20T Shaanxi Dideu Medichem Co. Ltd
2018-12-17 Dimethoxymethane
US $1.00 / kg 1kg 99% Customized career henan chemical co

Dimethoxymethane Spectrum

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