Skip to Content
MilliporeSigma
All Photos(1)

Documents

402788

Sigma-Aldrich

Acetaldehyde

ACS reagent, ≥99.5%

Synonym(s):

Ethanal

Sign Into View Organizational & Contract Pricing


About This Item

Linear Formula:
CH3CHO
CAS Number:
Molecular Weight:
44.05
Beilstein/REAXYS Number:
505984
EC Number:
MDL number:
UNSPSC Code:
12352100
eCl@ss:
39021102
PubChem Substance ID:
NACRES:
NA.21

biological source

synthetic

Quality Level

grade

ACS reagent

vapor density

1.52 (vs air)

vapor pressure

14.63 psi ( 20 °C)

assay

≥99.5%

form

liquid

autoignition temp.

365 °F

expl. lim.

60 %

impurities

≤0.008 meq/g Titr. acid

evapn. residue

≤0.005%

refractive index

n20/D 1.332 (lit.)

bp

21 °C (lit.)

mp

−125 °C (lit.)

solubility

alcohols: soluble
water: miscible

density

0.785 g/mL at 25 °C (lit.)

storage temp.

2-8°C

SMILES string

CC=O

InChI

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

InChI key

IKHGUXGNUITLKF-UHFFFAOYSA-N

Looking for similar products? Visit Product Comparison Guide

General description

Acetaldehyde is an industrially important solvent used as an intermediate for the synthesis of a wide range of compounds. On oxidation it forms acetic acid and ethanol on reduction. The interaction of Criegee intermediate (CH2OO) with acetaldehyde has been measured. Its effect as a neuroactive agent has been studied. Alkynylation reaction of acetaldehyde by asymmetric catalysis has been reported.

Application

Acetaldehyde may be used in the synthesis of 1,3-diamines by one-pot cross double-Mannich reaction and β-amino aldehydes by proline-catalyzed Mannich reaction.

Related product

Product No.
Description
Pricing

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

ppe

Eyeshields, Faceshields, Gloves


Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

One-pot cross double-Mannich reaction of acetaldehyde catalyzed by a binaphthyl-based amino sulfonamide.
Kano T, et al.
Chemical Communications (Cambridge, England), 49(11), 1118-1120 (2013)
Direct measurement of Criegee intermediate (CH2OO) reactions with acetone, acetaldehyde, and hexafluoroacetone.
Taatjes CA, et al.
Physical Chemistry Chemical Physics, 14(30), 10391-10400 (2012)
Proline-catalysed Mannich reactions of acetaldehyde.
Yang JW, et al.
Nature, 452(7186), 453-455 (2008)
Eagleson M.
Concise Encyclopedia Chemistry, 4-4 (1994)
Asymmetric Catalytic Alkynylation of Acetaldehyde: Application to the Synthesis of (+)-Tetrahydropyrenophorol.
Trost BM and Quintard A.
Angewandte Chemie (International Edition in English), 51(27), 6704-6708 (2012)

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service