133035

Methacrolein

95%

• Synonym(e): Methacrylaldehyd
• Lineare Formel: H₂C=C(CH₃)CHO
• CAS-Nummer: 78-85-3
• Molekulargewicht: 70.09
• Beilstein: 1209258
• EG-Nummer: 201-150-1
• MDL-Nummer: MFCD00006974
• UNSPSC-Code: 12352100
• PubChem Substanz-ID: 24848091
• NACRES: NA.22

Eigenschaften

• Dampfdichte: 2.4 (vs air)
• Qualitätsniveau: 100
• Dampfdruck: 121 mmHg ( 20 °C); 13.44 psi ( 55 °C); 5.35 psi ( 20 °C)
• Assay: 95%
• Form: liquid
• Brechungsindex: n20/D 1.416 (lit.)
• bp: 68-70 °C (lit.)
• mp (Schmelzpunkt): −81 °C (lit.)
• Dichte: 0.85 g/mL at 25 °C (lit.)
• Funktionelle Gruppe: aldehyde
• Lagertemp.: 2-8°C
• SMILES String: [H]C(=O)C(C)=C
• InChI: 1S/C4H6O/c1-4(2)3-5/h3H,1H2,2H3
• InChIKey: STNJBCKSHOAVAJ-UHFFFAOYSA-N

Beschreibung

Allgemeine Beschreibung

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.

Anwendung

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.

Sicherheitshinweise

• Piktogramme: GHS02,GHS06,GHS08,GHS05,GHS09
• Signalwort: Danger
• H-Sätze: H225,H301 + H311,H314,H330,H341,H410
• P-Sätze: P210 - P273 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338
• Gefahreneinstufungen: 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
• Lagerklassenschlüssel: 3 - Flammable liquids
• WGK: WGK 3
• Flammpunkt (°F): 5.0 °F - closed cup
• Flammpunkt (°C): -15 °C - closed cup
• Persönliche Schutzausrüstung: Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter