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8.00004

Sigma-Aldrich

Acetaldehyde

for synthesis

Synonym(s):

Acetaldehyde, Ethanal, Acetic Aldehyde, Ethyl Aldehyde

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About This Item

Empirical Formula (Hill Notation):
C2H4O
CAS Number:
Molecular Weight:
44.05
MDL number:
UNSPSC Code:
12352114
EC Index Number:
200-836-8
NACRES:
NA.22

vapor pressure

1006 hPa ( 20 °C)

Quality Level

assay

≥99% (GC)

form

liquid

autoignition temp.

140 °C

expl. lim.

4-57 % (v/v)

pH

5 (20 °C, 10 g/L in H2O)

bp

20.4 °C/1013 hPa

mp

-123 °C

transition temp

flash point -20 °C

density

0.78 g/cm3 at 20 °C

storage temp.

2-8°C

InChI

1S/C2H4O/c1-2-3/h2H,1H3

InChI key

IKHGUXGNUITLKF-UHFFFAOYSA-N

General description

Acetaldehyde is an organic compound and one of the significant aldehydes. Acetaldehyde is employed to produce acetic anhydride, acetic acid, cellulose acetate, pyridine derivatives, pentaerythritol, peracetic acid, and terephthalic acid. Furthermore, it is used as a solvent.

Application

Acetaldehyde is used as a raw material to synthesis acetal(1,1-dimetoxyethane) using Smopex 101 fibres catalyst.

Analysis Note

Assay (GC, area%): ≥ 99.0 % (a/a)
Density (d 5°C/ 4°C): 0.798 - 0.801

signalword

Danger

Hazard Classifications

Carc. 1B - Eye Irrit. 2 - Flam. Liq. 1 - Muta. 2 - STOT SE 3

target_organs

Respiratory system

Storage Class

3 - Flammable liquids

wgk_germany

WGK 3

flash_point_f

-38.0 °F - closed cup

flash_point_c

-38.89 °C - closed cup


Certificates of Analysis (COA)

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Acetaldehyde dimethylacetal synthesis with Smopex 101 fibres as catalyst/adsorbent
Gandi GK, et al.
Chemical Engineering Science, 62(4), 907-918 (2007)
Acetaldehyde
Hagemeyer, HJ
Kirk-Othmer Encyclopedia of Chemical Technology (2014)

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