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00071

Sigma-Aldrich

Acétaldéhyde

ReagentPlus®, ≥99.0% (GC)

Synonyme(s) :

Éthanal

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About This Item

Formule linéaire :
CH3CHO
Numéro CAS:
75-07-0
Poids moléculaire :
44.05
Beilstein:
505984
Numéro CE :
200-836-8
Numéro MDL:
MFCD00006991
Code UNSPSC :
12352114
eCl@ss :
39021102
ID de substance PubChem :
329746998
Nomenclature NACRES :
NA.21
Le tarif et la disponibilité ne sont pas disponibles actuellement.

Source biologique

synthetic

Niveau de qualité

200

Densité de vapeur

1.52 (vs air)

Pression de vapeur

14.63 psi ( 20 °C)

Gamme de produits

ReagentPlus®

Essai

≥99.0% (GC)

Forme

liquid

Température d'inflammation spontanée

365 °F

Limite d'explosivité

60 %

Indice de réfraction

n20/D 1.332 (lit.)

pb

21 °C (lit.)

Pf

−125 °C (lit.)

Densité

0.785 g/mL at 25 °C (lit.)

Groupe fonctionnel

aldehyde

Température de stockage

2-8°C

Chaîne SMILES 

CC=O

InChI

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

Clé InChI

IKHGUXGNUITLKF-UHFFFAOYSA-N

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Catégories apparentées

Description générale

Acetaldehyde is an organic colorless flammable liquid. It can be produced by hydration of acetylene and by catalytic oxidation of ethyl alcohol. It is mainly used in manufacturing acetic acid.[1]
Mechanism of the thermal decomposition of acetaldehyde has been reported.[2] It is a product of ethanol metabolism in the liver, binds covalently to various proteins, thereby alters the liver function and structure.[3] The aldol condensation of acetaldehyde and heptanal in the presence of hydrotalcite-type catalysts has been described.[4]

Application

Acetaldehyde may be used for the enzymatic synthesis of fatty acids.[5]
It was used in the plasma polymerization for deposition of reactive aldehyde groups onto substrate, in a study to produce fibrous biomaterials with cell adhesive and also repulsive capability in biomedical applications.[6] It was also used as calibration standard during determination of acetone, acetaldehyde, ethanol, and methanol in different human matrices, such as whole blood, vitreous humour, and urine using gas chromatography with flame ionization detection method (GC–FID).[7]

Attention

forms easily paraldehyde

Informations légales

ReagentPlus is a registered trademark of Merck KGaA, Darmstadt, Germany

Pictogrammes

FlameHealth hazardExclamation mark
GHS02,GHS08,GHS07

Mention d'avertissement

Danger

Mentions de danger

H224,H319,H335,H341,H350

Classification des risques

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

Organes cibles

Respiratory system

Code de la classe de stockage

3 - Flammable liquids

Classe de danger pour l'eau (WGK)

WGK 3

Point d'éclair (°F)

-38.0 °F - closed cup

Point d'éclair (°C)

-38.89 °C - closed cup

Équipement de protection individuelle

Eyeshields, Faceshields, Gloves

Listes réglementaires

Les listes réglementaires sont principalement fournies pour les produits chimiques. Seules des informations limitées peuvent être fournies ici pour les produits non chimiques. L'absence d'indication signifie qu'aucun des composants n'est répertorié. Il incombe à l'utilisateur de s'assurer de l'utilisation sûre et légale du produit.

EU REACH Annex XVII (Restriction List)

CAS No.

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Certificats d'analyse (COA)

Lot/Batch Number
SHBS6164
SHBS3951
STBL4585
SHBR6258
SHBS2765

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Supelco

CRM868095

Acetaldehyde solution

Raghu Sivaramakrishnan et al.
The journal of physical chemistry. A, 119(28), 7724-7733 (2015-03-21)
The mechanism for the thermal decomposition of acetaldehyde has been revisited with an analysis of literature kinetics experiments using theoretical kinetics. The present modeling study was motivated by recent observations, with very sensitive diagnostics, of some unexpected products in high
Bruce D. Craig, David S. Anderson
Handbook of Corrosion Data, 87-87 (1994)
GC determination of acetone, acetaldehyde, ethanol, and methanol in biological matrices and cell culture.
Pontes, Helena, et al.
Journal of Chromatographic Science, 47.4, 272-278 (2009)
C S Lieber
Biochemical Society transactions, 16(3), 241-247 (1988-06-01)
Acetaldehyde, the toxic product of ethanol metabolism in the liver, covalently binds to a variety of proteins, thereby altering liver function and structure. Through its binding to tubulin, acetaldehyde decreases the polymerization of microtubules thereby impairing protein secretion and favouring
Acetaldehyde plasma polymer-coated PET fibers for endothelial cell patterning: Chemical, topographical, and biological analysis.
Hadjizadeh, Afra.
Journal of Biomedical Materials Research. Part B, Applied Biomaterials, 94.1, 11-21 (2010)
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Articles

Aldol Condensation Reaction

The aldol condensation reaction is an organic reaction introduced by Charles Wurtz, who first prepared the β-hydroxy aldehyde from acetaldehdye in 1872.

Questions

1–2 sur 2 questions  

  1. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 réponse

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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  2. How can I determine the shelf life / expiration / retest date of this product?

    1 réponse

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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