Dimethoxymethane - Materials / Alfa Chemistry

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Dimethoxymethane

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Catalog Number

ACMA00017347

Product Name

Dimethoxymethane

Category

Polymers

Description

Methylal appears as 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.;Liquid;VERY VOLATILE COLOURLESS LIQUID WITH CHARACTERISTIC ODOUR.;Colorless liquid with a chloroform-like odor.;Colorless liquid with a chloroform-like odor.

IUPAC Name

dimethoxymethane

Molecular Weight

76.09g/mol

Molecular Formula

C3H8O2;CH2-(OCH3)2;C3H8O2

Canonical SMILES

COCOC

InChI

InChI=1S/C3H8O2/c1-4-3-5-2/h3H2,1-2H3

InChI Key

NKDDWNXOKDWJAK-UHFFFAOYSA-N

Boiling Point

108 °F at 760 mm Hg (USCG, 1999);42.0 °C;41.6 °C @ 760 MM HG;42 °C;111°F;111°F

Melting Point

-157 °F (USCG, 1999);-104.8 °C;-105 °C;-105 °C;-157°F;-157°F

Flash Point

0 °F (USCG, 1999);-26 °F (-32 °C) (OPEN CUP);-31 °C c.c.;-26°F (open cup);(oc) -26°F

Density

0.861 at 68 °F (USCG, 1999);0.8593 @ 20 °C/4 °C;0.86 g/cm³;Relative density of the vapour/air-mixture at 20 °C (air = 1): 1.7;0.86;0.86

Solubility

33 % (NIOSH, 2016);MISCIBLE WITH ALCOHOL, ETHER, OILS; SOL IN 3 PARTS WATER;SOL IN ALL ACETONE, AND BENZENE;Water solubility: 330,000 mg/l;Solubility in water, g/100ml at 20 °C: 28.5 (good);33%

Application

Dimethoxymethane, also known as methylal, serves multiple purposes across various industries due to its excellent dissolving power and stability. This colorless, flammable liquid is particularly valued for its role as a solvent in pharmaceutical extraction and Grignard reactions, thanks to its stability under alkaline and mildly acidic conditions. Its fast evaporation rate, which is twice that of acetone, places it on par with other efficient solvents like acetone, methyl acetate, and ethyl acetate, making it ideal for resin formulations. Moreover, dimethoxymethane's capacity to dissolve synthetic resins such as nitrocellulose and other natural gums and waxes enhances its utility in manufacturing anion-exchange resins and as a latent solvent in various applications. It is instrumental in the production of methoxymethyl ethers, serving as an external cross-linker to form microporous polymers, and employed in the synthesis of ion exchange resins, polyacetals, and microporous polymers. Additionally, dimethoxymethane finds use as a blowing agent for polyurethane foams, in glue formulations, fragrances, and as a fuel additive aimed at smoke reduction, reflecting its versatility and economic efficiency in enhancing manufacturing processes across diverse sectors such as paints, perfumes, resins, and more.

Color/Form

COLORLESS, CLEAR LIQUID;Colorless solid.

Complexity

12.4

Covalently-Bonded Unit Count

EC Number

203-714-2

Exact Mass

76.052429g/mol

Formal Charge

Heat of Vaporization

161.5 BTU/LB= 89.8 CAL/G= 3.76X10+5 JL/KG

Heavy Atom Count

ICSC Number

1152

Log P

0.0 (LogP);log Kow= 0.0;0.18

MeSH Entry Terms

dimethoxymethane;methylal

Monoisotopic Mass

76.052429g/mol

Odor

CHLOROFORM ODOR;Chloroform-like odor.

Other Experimental

HYDROLYZE READILY IN PRESENCE OF ACIDS TO GENERATE ALDEHYDES /KETALS/;Sat conc 1,367 g/cu m @ 20 °C;Ratio of specific heats of vapor (gas)= 1.0888;Henry's Law constant= 1.63X10-4 atm-cu m/mole (calc).

Refractive Index

INDEX OF REFRACTION: 1.3589 AT 18 °C/D;INDEX OF REFRACTION: 1.3513 @ 20 °C/D

Rotatable Bond Count

RTECS Number

PA8750000

Stability

STABLE UNDER NEUTRAL OR ALKALINE CONDITIONS /KETALS/

UNII

7H1M4G2NUE

UN Number

1234;1234;1234;1234;1234

Vapor Density

2.6 (USCG, 1999) (Relative to Air);2.6 (AIR= 1);Relative vapor density (air = 1): 2.6;2.6

Vapor Pressure

337.08 mm Hg at 70 °F (USCG, 1999);397.47 mmHg;400 MM HG AT 25 °C;Vapor pressure, kPa at 20 °C: 42.6;330 mmHg;330 mmHg

XLogP3

0.2

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