methacrylaldehyde
methacrylaldehyde
CAS: 78-85-3
Molecular Formula: C4H6O
methacrylaldehyde - Names and Identifiers
| Name | methacrylaldehyde |
| Synonyms | Methacrolein Methakrylaldehyd 2-Methylpropenal 2-Methylacrolein 2-METHYL-PROPENAL 2-Methyl propenal methacrylaldehyde 2-Formyl-1-propene 2-methylprop-2-enal methacrylicaldehyde 2-METHYL-2-PROPENAL Methacrylic aldehyde 2-Methyl-2-propen-1-al methacrolein(stabilizedwithhq) |
| CAS | 78-85-3 |
| EINECS | 201-150-1 |
| InChI | InChI=1/C4H6O/c1-4(2)3-5/h3H,1H2,2H3 |
| InChIKey | STNJBCKSHOAVAJ-UHFFFAOYSA-N |
methacrylaldehyde - Physico-chemical Properties
| Molecular Formula | C4H6O |
| Molar Mass | 70.09 |
| Density | 0.85g/mLat 25°C(lit.) |
| Melting Point | -81 °C |
| Boling Point | 69 °C |
| Flash Point | 5°F |
| Water Solubility | 6 g/100 mL (20 ºC) |
| Vapor Presure | 121 mm Hg ( 20 °C) |
| Vapor Density | 2.4 (vs air) |
| Appearance | Liquid |
| Color | Pale yellow |
| Exposure Limit | ACGIH: TWA 1 mg/m3OSHA: TWA 2 mg/m3NIOSH: IDLH 50 mg/m3; Ceiling 2 mg/m3 |
| BRN | 1209258 |
| Storage Condition | 2-8°C |
| Stability | Stable. Incompatible with strong bases, strong oxidising agents, strong reducing agents. Light and air-sensitive. Hazardous polymerisation may occur. |
| Sensitive | Light Sensitive |
| Refractive Index | n20/D 1.416(lit.) |
methacrylaldehyde - Risk and Safety
| Risk Codes | R11 - Highly Flammable R24/25 - R34 - Causes burns R26 - Very Toxic by inhalation |
| Safety Description | S16 - Keep away from sources of ignition. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S28A - |
| UN IDs | UN 2396 3/PG 2 |
| WGK Germany | 3 |
| RTECS | OZ2625000 |
| FLUKA BRAND F CODES | 8-23 |
| TSCA | Yes |
| HS Code | 29121900 |
| Hazard Class | 3 |
| Packing Group | II |
methacrylaldehyde - Reference Information
| olfactory Threshold | 0.0085ppm |
| LogP | 0.9 at 23℃ |
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Use | for the manufacture of copolymers and resins, is the raw material of methacrylic acid production and thermoplastic monomer raw material |
| category | flammable liquid |
| toxicity grade | poisoning |
| Acute toxicity | inhalation-rat LCL0: 125 PPM/ 4 hours; Subcutaneous-rabbit LDL0: 364 mg/kg |
| stimulation data | eyes-severe at 0.05 mg/24 h in rabbits; cutaneous-Rabbit 2.0 mg/24 h severe |
| flammability hazard characteristics | in case of open flame, high temperature, flammable oxidant; Hot gas |
| storage and transportation characteristics | The warehouse is ventilated and dried at low temperature; It is stored separately from oxidants and acids; It is not suitable for long storage, to prevent aggregation |
| extinguishing agent | dry powder, dry sand, carbon dioxide, foam, 1211 extinguishing agent |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-09 02:00:11
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