Acetoin
ALDRICH/A17951 - May exist as crystalline dimer
Synonym: 3-Hydroxy-2-butanone; Acetylmethylcarbinol
CAS Number: 513-86-0
Empirical Formula (Hill Notation): C4H8O2
Molecular Weight: 88.11
EC Number: 208-174-1
MDL Number: MFCD00004521
Linear Formula: CH3COCH(OH)CH3
Product Type: Chemical
| assay | ≥98.0% (GC) |
| bp | 148 °C (lit.) |
| density | 1.013 g/mL at 25 °C (lit.) |
| food allergen | no known allergens |
| form | crystals |
| InChI | 1S/C4H8O2/c1-3(5)4(2)6/h3 |
| InChI key | ROWKJAVDOGWPAT-UHFFFAOYSA |
| mp | 15 °C (monomer) |
| 90 °C (dimer) (lit.) | |
| Quality Level | 100 ![]() |
| refractive index | n |
| SMILES string | CC(O)C(C)=O |
| storage temp. | 2-8°C |
| Packaging: | 1 kg in glass bottle |
| Packaging: | 50, 250 g in glass bottle |
| Symbol | ![]() GHS02,GHS05 |
| Signal word | Danger |
| Hazard statements | H226 - H318 |
| Precautionary statements | P210 - P233 - P240 - P241 - P280 - P305 + P351 + P338 |
| Hazard Codes | Xi |
| Risk Statements | 10-36/38 |
| Safety Statements | 26-36 |
| RIDADR | UN 2621 3 / PGIII |
| WGK Germany | WGK 1 |
| Flash Point(F) | 118.4 °F - closed cup |
| Flash Point(C) | 48 °C - closed cup |
| Purity | ≥98.0% (GC) |
| bp | 148 °C (lit.) |
| mp | 15 °C (monomer); 90 °C (dimer) (lit.) |
| Density | 1.013 g/mL at 25 °C (lit.) |
| Refractive Index | n |
| Storage Temp. | 2-8°C |
| UNSPSC | 12352100 |



