Acetic anhydride
ALDRICH/691275 - Arxada quality, ≥99.5% (GC)
Synonym: Acetanhydride; Acetic acid anhydride; Acetyl acetate; Acetyl anhydride; Acetyl anhydride; Ethanoic anhydride
CAS Number: 108-24-7
Empirical Formula (Hill Notation): C4H6O3
Molecular Weight: 102.09
EC Number: 203-564-8
MDL Number: MFCD00008705
Linear Formula: (CH3CO)2O
Product Type: Chemical
| assay | ≥99.5% (GC) |
| autoignition temp. | 629 °F |
| bp | 138-140 °C (lit.) |
| density | 1.08 g/mL (lit.) |
| expl. lim. | 10.3 % |
| form | liquid |
| impurities | ≤0.5% acetic acid |
| InChI | 1S/C4H6O3/c1-3(5)7-4(2)6/ |
| InChI key | WFDIJRYMOXRFFG-UHFFFAOYSA |
| manufacturer/tradename | Arxada AG |
| mp | −73 °C (lit.) |
| quality | Arxada quality |
| Quality Level | 200  |
| refractive index | n |
| SMILES string | CC(=O)OC(C)=O |
| solubility | H2O: slightly soluble |
| vapor density | 3.5 (vs air) |
| vapor pressure | 10 mmHg ( 36 °C) |
| 4 mmHg ( 20 °C) |
| Analysis Note: | KMnO4 test ≤40 mL (0.1% KMnO4 per 20 mL) |
| Packaging: | 25 kg in composite drum |
| Symbol |    GHS02,GHS05,GHS06 |
| Signal word | Danger |
| Hazard statements | H226 - H302 - H314 - H330 |
| Precautionary statements | P210 - P280 - P301 + P312 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338 |
| Hazard Codes | C |
| Risk Statements | 10-20/22-34 |
| Safety Statements | 26-36/37/39-45 |
| RIDADR | UN 1715 3(8) / PGII |
| WGK Germany | WGK 1 |
| Flash Point(F) | 120.2 °F - closed cup |
| Flash Point(C) | 49 °C - closed cup |
| Supplemental Hazard Statements | EUH071 |
| Purity | ≥99.5% (GC) |
| bp | 138-140 °C (lit.) |
| mp | −73 °C (lit.) |
| Density | 1.08 g/mL (lit.) |
| Refractive Index | n |
| UNSPSC | 12352106 |