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133035

Sigma-Aldrich

Methacrolein

95%

Sinonimo/i:

Methacrylaldehyde

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About This Item

Formula condensata:
H2C=C(CH3)CHO
Numero CAS:
Peso molecolare:
70.09
Beilstein:
1209258
Numero CE:
Numero MDL:
Codice UNSPSC:
12352100
ID PubChem:
NACRES:
NA.22

Densità del vapore

2.4 (vs air)

Tensione di vapore

121 mmHg ( 20 °C)
13.44 psi ( 55 °C)
5.35 psi ( 20 °C)

Saggio

95%

Forma fisica

liquid

Indice di rifrazione

n20/D 1.416 (lit.)

P. eboll.

68-70 °C (lit.)

Punto di fusione

−81 °C (lit.)

Densità

0.85 g/mL at 25 °C (lit.)

Temperatura di conservazione

2-8°C

Stringa SMILE

[H]C(=O)C(C)=C

InChI

1S/C4H6O/c1-4(2)3-5/h3H,1H2,2H3
STNJBCKSHOAVAJ-UHFFFAOYSA-N

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Categorie correlate

Descrizione generale

Methacrolein on oxidation over heteropoly acid catalysts (mainly 12-molybdophosphoric acid) at 300°C yields methacrylic acid. It is the major product of isoprene oxidation.

Applicazioni

Methacrolein was used to study the effect of parts per billion levels of limonene oxidation products and the terpene oxidation product, methacrolein on human eye blink frequency. It was also used in determination of rate constants and the products of the reactions between atomic chlorine and acrolein, methacrolein and methyl vinyl ketone.

Avvertenze

Danger

Classi di pericolo

Acute Tox. 2 Inhalation - Acute Tox. 3 Dermal - Acute Tox. 3 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - Eye Dam. 1 - Flam. Liq. 2 - Muta. 2 - Skin Corr. 1B

Codice della classe di stoccaggio

3 - Flammable liquids

Classe di pericolosità dell'acqua (WGK)

WGK 3

Punto d’infiammabilità (°F)

5.0 °F - closed cup

Punto d’infiammabilità (°C)

-15 °C - closed cup

Dispositivi di protezione individuale

Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter


Certificati d'analisi (COA)

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Daniel Carmona et al.
Journal of the American Chemical Society, 127(38), 13386-13398 (2005-09-22)
The rhodium and iridium Lewis-acid cations [(eta(5)-C(5)Me(5))M{(R)-Prophos}(H(2)O)](2+) ((R)-Prophos = 1,2-bis(diphenylphosphino)propane) efficiently catalyze the enantioselective 1,3-dipolar cycloaddition of nitrones to methacrolein. Reactions occur with perfect endo selectivity and with enantiomeric excesses up to 96%. Intermediates [(eta(5)-C(5)Me(5))M{(R)-Prophos}(methacrolein)](SbF(6))(2) (M = Rh (3), Ir
Michael N Paddon-Row et al.
The Journal of organic chemistry, 74(2), 861-868 (2008-12-11)
The cationic oxazaborolidine-catalyzed Diels-Alder reactions of butadiene and a series of five dienophiles have been studied using density functional theory (B3LYP/6-31G(d)). In each case, the computational results successfully reproduce the experimentally observed sense of stereoinduction and enantiomeric ratio. The computed
S T Larsen et al.
Toxicology letters, 114(1-3), 197-202 (2000-03-14)
The acute respiratory effects of airborne exposure to methacrolein were studied in a recent refinement of the standard test method with mice (ASTM, 1984. American Society for Testing and Materials, Philadelphia). Irritation of the upper respiratory tract caused a concentration-dependent
Catalysis by heteropoly compounds: IV. Oxidation of methacrolein to methacrylic acid over 12-molybdophosphoric acid.
Konishi Y, et al.
J. Catal., 77(1), 169-179 (1982)
Ze Liu et al.
The journal of physical chemistry. A, 116(1), 437-442 (2011-12-06)
Multiphase acid-catalyzed oxidation by hydrogen peroxide has been suggested to be a potential route to secondary organic aerosol (SOA) formation from isoprene and its gas-phase oxidation products, but the kinetics and chemical mechanism remain largely uncertain. Here we report the

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