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402788

Sigma-Aldrich

Acetaldehyde

ACS reagent, ≥99.5%

Synonym(s):

Ethanal

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5 ML
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100 ML
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5 ML
329,00 kr
100 ML
490,00 kr
1 L
815,00 kr

About This Item

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

329,00 kr


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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.)

functional group

aldehyde

storage temp.

2-8°C

SMILES string

CC=O

InChI

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

InChI key

IKHGUXGNUITLKF-UHFFFAOYSA-N

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This Item
000718.00004W200336
assay

≥99.5%

assay

≥99.0% (GC)

assay

≥99% (GC)

assay

≥99% (GC)

Quality Level

200

Quality Level

200

Quality Level

200

Quality Level

400

solubility

alcohols: soluble, water: miscible

solubility

-

solubility

-

solubility

-

form

liquid

form

liquid

form

liquid

form

liquid

storage temp.

2-8°C

storage temp.

2-8°C

storage temp.

2-8°C

storage temp.

2-8°C

refractive index

n20/D 1.332 (lit.)

refractive index

n20/D 1.332 (lit.)

refractive index

-

refractive index

n20/D 1.332 (lit.)

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.[1] The interaction of Criegee intermediate (CH2OO) with acetaldehyde has been measured.[2] Its effect as a neuroactive agent has been studied.[3] Alkynylation reaction of acetaldehyde by asymmetric catalysis has been reported.[4]

Application

Acetaldehyde may be used in the synthesis of 1,3-diamines by one-pot cross double-Mannich reaction[5] and β-amino aldehydes by proline-catalyzed Mannich reaction.[6]

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Description
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Signal Word

Danger

Hazard Statements

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

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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.

EU REACH Annex XVII (Restriction List)

CAS No.

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