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Merck

133035

Methacrolein

95%

Synonyme(s) :

Methacrylaldehyde

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A propos de cet article

Formule linéaire :
H2C=C(CH3)CHO
Numéro CAS:
Poids moléculaire :
70.09
UNSPSC Code:
12352100
NACRES:
NA.22
PubChem Substance ID:
EC Number:
201-150-1
Beilstein/REAXYS Number:
1209258
MDL number:
Assay:
95%
Form:
liquid
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InChI key

STNJBCKSHOAVAJ-UHFFFAOYSA-N

InChI

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

SMILES string

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

vapor density

2.4 (vs air)

vapor pressure

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

assay

95%

form

liquid

refractive index

n20/D 1.416 (lit.)

bp

68-70 °C (lit.)

mp

−81 °C (lit.)

density

0.85 g/mL at 25 °C (lit.)

functional group

aldehyde

storage temp.

2-8°C

Quality Level

General description

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.

Application

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.

signalword

Danger

Hazard Classifications

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

Classe de stockage

3 - Flammable liquids

wgk

WGK 3

flash_point_f

5.0 °F - closed cup

flash_point_c

-15 °C - closed cup

ppe

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


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Consulter la Bibliothèque de documents

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
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)
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
John D Crounse et al.
The journal of physical chemistry. A, 116(24), 5756-5762 (2012-03-29)
Peroxy radicals formed by addition of OH and O(2) to the olefinic carbon atoms in methacrolein react with NO to form methacrolein hydroxy nitrate and hydroxyacetone. We observe that the ratio of these two compounds, however, unexpectedly decreases as the
Carmen Barba et al.
The Journal of organic chemistry, 71(26), 9831-9840 (2006-12-16)
A B3LYP/6-31G* study has been carried out for the reactions of methacrolein with cyclopentadiene, parent nitrone, 1-pyrroline-1-oxide, and (Z)-C,N-diphenylnitrone, in which the coordination of a Lewis acid (borane) and the solvent polarity (dichloromethane) have been taken into account. Calculated activation

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