Methyl Acetate CAS# 79-20-9
| Methyl acetate Chemical Properties |
| Melting point | -98 °C (lit.) |
| Boiling point | 57-58 °C (lit.) |
| density | 0.934 g/mL at 25 °C |
| vapor density | 2.55 (vs air) |
| vapor pressure | 165 mm Hg ( 20 °C) |
| refractive index | n20/D 1.361(lit.) |
| FEMA | 2676 | METHYL ACETATE |
| Fp | 3.2 °F |
| storage temp. | no restrictions. |
| solubility | 250g/l |
| form | Solution |
| color | Clear colorless to slightly pale yellow |
| Relative polarity | 0.253 |
| Odor | Slightly acrid, sweet; fragrant. |
| PH | 7 |
| biological source | synthetic |
| Odor Type | ethereal |
| Odor Threshold | 1.7ppm |
| explosive limit | 3.1-16%(V) |
| Water Solubility | 250 g/L (20 ºC) |
| λmax | λ: 255 nm Amax: 1.0 λ: 275 nm Amax: 0.1 λ: 300 nm Amax: 0.01 |
| JECFA Number | 125 |
| Merck | 14,6008 |
| BRN | 1736662 |
| Henry’s Law Constant | 0.90 at 20.00 °C, 1.56 at 30.00 °C (headspace-GC, Hovorka et al., 2002) |
| Exposure limits | TLV-TWA 200 ppm (～610 mg/m3) (ACGIH, MSHA, and OSHA); TLV-STEL 250 ppm (～760 mg/m3) (ACGIH); IDLH 10,000 ppm (NIOSH). |
| Dielectric constant | 7.3（20℃） |
| Stability: | Stable. Extremely flammable – readily forms explosive mixtures with air. Note low flash point and wide explosion limits. Incompatible with strong oxidizing agents, strong bases, strong acids, nitrates. May be moisture sensitive. |
| LogP | 0.18 at 20℃ |
| CAS DataBase Reference | 79-20-9(CAS DataBase Reference) |
| NIST Chemistry Reference | Acetic acid, methyl ester(79-20-9) |
| EPA Substance Registry System | Methyl acetate (79-20-9) |
| Safety Information |
| Hazard Codes | F,Xi |
| Risk Statements | 11-36-66-67 |
| Safety Statements | 16-26-29-33 |
| RIDADR | UN 1231 3/PG 2 |
| OEB | A |
| OEL | TWA: 200 ppm (610 mg/m3), STEL: 250 ppm (760 mg/m3) |
| WGK Germany | 1 |
| RTECS | AI9100000 |
| Autoignition Temperature | 936 °F |
| TSCA | Yes |
| HS Code | 2915 39 00 |
| HazardClass | 3 |
| PackingGroup | II |
| Hazardous Substances Data | 79-20-9(Hazardous Substances Data) |
| Toxicity | LD50 orally in Rabbit: > 5000 mg/kg LD50 dermal Rat > 2000 mg/kg |
| IDLA | 3,100 ppm [10% LEL] |
