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Safety Information

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
Assay:
≥99% (GC)
bp:
20.4 °C/1013 hPa
vapor pressure:
1006 hPa ( 20 °C)

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

SMILES string

O=CC

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

Signal Word

Danger

Hazard Classifications

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

Target Organs

Respiratory system

Storage Class Code

3 - Flammable liquids

WGK

WGK 3

Flash Point(F)

-38.0 °F - closed cup

Flash Point(C)

-38.89 °C - closed cup


Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

PRTR

NON

FSL

Flammable liquids
Special flammables
Hazardous rank I

ISHL Indicated Name

Substances Subject to be Indicated Names

ISHL Notified Names

Substances Subject to be Notified Names


Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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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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