Methacrolein
ALDRICH/133035 - 95%
Synonym: Methacrylaldehyde
CAS Number: 78-85-3
Empirical Formula (Hill Notation): C4H6O
Molecular Weight: 70.09
EC Number: 201-150-1
MDL Number: MFCD00006974
Linear Formula: H2C=C(CH3)CHO
Product Type: Chemical
25 mL Sure/Seal™ Packaging
| assay | 95% |
| bp | 68-70 °C (lit.) |
| density | 0.85 g/mL at 25 °C (lit.) |
| form | liquid |
| InChI | 1S/C4H6O/c1-4(2)3-5/h3H,1 |
| InChI key | STNJBCKSHOAVAJ-UHFFFAOYSA |
| mp | −81 °C (lit.) |
| Quality Level | 100  |
| refractive index | n |
| SMILES string | [H]C(=O)C(C)=C |
| storage temp. | 2-8°C |
| vapor density | 2.4 (vs air) |
| vapor pressure | 121 mmHg ( 20 °C) |
| 13.44 psi ( 55 °C) | |
| 5.35 psi ( 20 °C) |
| 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. |
| 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. |
| Packaging: | 25 mL in Sure/Seal™ |
| Packaging: | 5 mL in glass bottle |
| Symbol |      GHS02,GHS05,GHS06,GHS08,GHS09 |
| Signal word | Danger |
| Hazard statements | H225 - H301 + H311 - H314 - H330 - H341 - H410 |
| Precautionary statements | P210 - P273 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338 |
| Hazard Codes | F,T |
| Risk Statements | 11-24/25-34 |
| Safety Statements | 16-26-36/37/39-45 |
| RIDADR | UN 2396 6.1(3) / PGII |
| WGK Germany | WGK 3 |
| Flash Point(F) | 5.0 °F - closed cup |
| Flash Point(C) | -15 °C - closed cup |
| Purity | 95% |
| bp | 68-70 °C (lit.) |
| mp | −81 °C (lit.) |
| Density | 0.85 g/mL at 25 °C (lit.) |
| Refractive Index | n |
| Storage Temp. | 2-8°C |
| UNSPSC | 12352100 |