133035
Methacrolein
95%
Synonym(s):
Methacrylaldehyde
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About This Item
Linear Formula:
H2C=C(CH3)CHO
CAS Number:
Molecular Weight:
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
vapor density
2.4 (vs air)
Quality Level
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
SMILES string
[H]C(=O)C(C)=C
InChI
1S/C4H6O/c1-4(2)3-5/h3H,1H2,2H3
InChI key
STNJBCKSHOAVAJ-UHFFFAOYSA-N
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
Storage Class
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
Regulatory Information
危险化学品
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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)
Global Trade Item Number
| SKU | GTIN |
|---|---|
| 133035-25ML | 04061838729309 |
| 133035-5ML | 04061838729316 |