133035

Methacrolein

95%

• Synonyma: Methacrylaldehyde
• Lineární vzorec: H₂C=C(CH₃)CHO
• Číslo CAS: 78-85-3
• Molekulová hmotnost: 70.09
• UNSPSC Code: 12352100
• NACRES: NA.22
• PubChem Substance ID: 24848091
• EC Number: 201-150-1
• Beilstein/REAXYS Number: 1209258
• MDL number: MFCD00006974
• Assay: 95%
• Form: liquid

Vlastnosti

• vapor density: 2.4 (vs air)
• Quality Segment: 100
• 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

Popis

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.

Bezpečnostní informace

• Piktogramy: GHS02,GHS06,GHS08,GHS05,GHS09
• Výstražné slovo: Danger
• Kódy nebezpečí: H225,H301 + H311,H314,H330,H341,H410
• Bezpečnostní pokyny: P210 - P273 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338
• 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
• Skladovací třída: 3 - Flammable liquids
• Co se děje?: WGK 3
• Bod vzplanutí (°F): 5.0 °F - closed cup
• Bod vzplanutí (°C): -15 °C - closed cup
• PPE (osobní ochranné prostředky): Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter