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8.20493

Sigma-Aldrich

Formaldehyde dimethyl acetal

for synthesis

Synonym(s):

Formaldehyde dimethyl acetal, Formal, Methylal, Dimethoxymethane

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About This Item

Linear Formula:
CH2(OCH3)2
CAS Number:
Molecular Weight:
76.09
MDL number:
UNSPSC Code:
12352112
EC Index Number:
203-714-2

vapor pressure

440 hPa ( 20 °C)

Assay

≥98.0% (GC)

form

liquid

autoignition temp.

235 °C

potency

6653 mg/kg LD50, oral (Rat)

expl. lim.

1.6-17.6 % (v/v)

bp

43 °C/1013 hPa

mp

-105 °C

transition temp

flash point -18 °C

density

0.86 g/cm3 at 20 °C

InChI

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

InChI key

NKDDWNXOKDWJAK-UHFFFAOYSA-N

Analysis Note

Assay (GC, area%): ≥ 98.0 % (a/a)
Methanol (GC, area%): ≤ 0.50 % (a/a)
Density (d 20 °C/ 4 °C): 0.858 - 0.862
Water (K. F.): ≤ 0.30 %
Identity (IR): passes test

Pictograms

Flame

Signal Word

Danger

Hazard Statements

Hazard Classifications

Flam. Liq. 2

Supplementary Hazards

Storage Class Code

3 - Flammable liquids

WGK

WGK 1

Flash Point(F)

-0.4 °F - closed cup

Flash Point(C)

-18 °C - closed cup

Regulatory Information

危险化学品

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