A5542912
Methacrolein , ≥80.0%(GC), including about 1%HQ stabilizer , 78-85-3
Synonym(s):
Methacrylaldehyde
CAS NO.：78-85-3
Empirical Formula: C4H6O
Molecular Weight: 70.09
MDL number: MFCD00006974
EINECS: 201-150-1
Update time: 2022-07-08
PRODUCT Properties
| Melting point: | -81 °C |
| Boiling point: | 69 °C |
| Density | 0.85 g/mL at 25 °C(lit.) |
| vapor density | 2.4 (vs air) |
| vapor pressure | 121 mm Hg ( 20 °C) |
| refractive index | n |
| Flash point: | 5 °F |
| storage temp. | 2-8°C |
| solubility | Benzene (Slightly), Chloroform (Soluble), Methanol (Soluble) |
| form | Liquid |
| color | Pale yellow |
| Odor | at 0.01 % in dipropylene glycol. wild hyacinth foliage |
| Odor Type | floral |
| Odor Threshold | 0.0085ppm |
| Water Solubility | 6 g/100 mL (20 ºC) |
| Sensitive | Light Sensitive |
| BRN | 1209258 |
| Exposure limits | ACGIH: TWA 1 mg/m3 OSHA: TWA 2 mg/m3 NIOSH: IDLH 50 mg/m3; Ceiling 2 mg/m3 |
| Stability: | Stable. Incompatible with strong bases, strong oxidising agents, strong reducing agents. Light and air-sensitive. Hazardous polymerisation may occur. |
| InChIKey | STNJBCKSHOAVAJ-UHFFFAOYSA-N |
| LogP | 0.9 at 23℃ |
| CAS DataBase Reference | 78-85-3(CAS DataBase Reference) |
| NIST Chemistry Reference | 2-Propenal, 2-methyl-(78-85-3) |
| EPA Substance Registry System | Methacrolein (78-85-3) |
Description and Uses
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.
Safety
| Symbol(GHS) |      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 | 11-24/25-34-26 |
| Safety Statements | 16-26-36/37/39-45-28A |
| RIDADR | UN 2396 3/PG 2 |
| WGK Germany | 3 |
| RTECS | OZ2625000 |
| F | 8-23 |
| TSCA | Yes |
| HazardClass | 3 |
| PackingGroup | II |
| HS Code | 29121900 |
| Hazardous Substances Data | 78-85-3(Hazardous Substances Data) |
