a-Methylenebutyrolactone
α-methylene-γ-butyrolactone
CAS: 547-65-9
Molecular Formula: C5H6O2
a-Methylenebutyrolactone - Names and Identifiers
a-Methylenebutyrolactone - Physico-chemical Properties
| Molecular Formula | C5H6O2 |
| Molar Mass | 98.1 |
| Density | 1.119g/mLat 25°C(lit.) |
| Boling Point | 86-88°C12mm Hg(lit.) |
| Flash Point | 99°F |
| Solubility | water: soluble(lit.) |
| Vapor Presure | 0.264mmHg at 25°C |
| Appearance | Liquid |
| Color | Clear colorless to light yellow or slightly pink |
| Merck | 14,6062 |
| BRN | 107939 |
| Storage Condition | 2-8°C |
| Refractive Index | n20/D 1.472(lit.) |
a-Methylenebutyrolactone - Risk and Safety
| Hazard Symbols | Xn - Harmful |
| Risk Codes | R42/43 - May cause sensitization by inhalation and skin contact. R52/53 - Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment. R10 - Flammable |
| Safety Description | S23 - Do not breathe vapour. S36/37 - Wear suitable protective clothing and gloves. S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) |
| UN IDs | 1993 |
| WGK Germany | 3 |
| RTECS | LU3580400 |
| FLUKA BRAND F CODES | 1-8-10 |
| HS Code | 29349990 |
| Hazard Class | 3.2 |
| Packing Group | III |
a-Methylenebutyrolactone - Reference Information
| NIST chemical information | Information provided by: webbook.nist.gov (external link) |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| Biological activity | 2-Methylenebutyrolactone (Tulipalin A, MBL, α-methylene-γ-butyrolactone), also known as α-methylene-γ-butyrolactone (MBL) or Tulipalin A, is a Sesquiterpene lactone is considered to be the most common cyclic analog of vinyl monomer methyl methacrylate (MMA). |
| Use | Strongly reactive Michael receptor; α-methylene-γ-butyrolactone ring system exists in many natural products with biological significance |
| production method | extracted from Erythrorium americanum. |
Last Update：2024-04-09 15:16:46
