2,3-Butanedione
ALDRICH/B85307 - 97%
Synonym: Biacetyl; Diacetyl
CAS Number: 431-03-8
Empirical Formula (Hill Notation): C4H6O2
Molecular Weight: 86.09
EC Number: 207-069-8
MDL Number: MFCD00008756
Linear Formula: CH3COCOCH3
Product Type: Chemical
| assay | 97% |
| autoignition temp. | 345 °C |
| bp | 88 °C (lit.) |
| density | 0.981 g/mL (lit.) |
| form | liquid |
| InChI | 1S/C4H6O2/c1-3(5)4(2)6/h1 |
| InChI key | QSJXEFYPDANLFS-UHFFFAOYSA |
| Quality Level | 100 ![]() |
| refractive index | n |
| SMILES string | CC(=O)C(C)=O |
| storage temp. | 2-8°C |
| vapor density | 3 (vs air) |
| vapor pressure | 52.2 mmHg ( 20 °C) |
| Application: | Inactivates aminopeptidase-N. Cyclocondensation with amines has been used to form triazine and pteridine ring systems. Also used as a precursor to α-diones. |
| Packaging: | 5, 100, 500 mL in glass bottle |
| Symbol | ![]() ![]() ![]() GHS02,GHS05,GHS06,GHS08 |
| Signal word | Danger |
| Hazard statements | H225 - H302 - H315 - H317 - H318 - H331 - H373 |
| Precautionary statements | P210 - P280 - P301 + P312 - P304 + P340 + P311 - P305 + P351 + P338 - P314 |
| Hazard Codes | F,Xn |
| Risk Statements | 11-20/22-37/38-41 |
| Safety Statements | 26-39 |
| RIDADR | UN 2346 3 / PGII |
| WGK Germany | WGK 2 |
| Flash Point(F) | 44.6 °F |
| Flash Point(C) | 7 °C |
| Purity | 97% |
| bp | 88 °C (lit.) |
| Density | 0.981 g/mL (lit.) |
| Refractive Index | n |
| Storage Temp. | 2-8°C |
| UNSPSC | 12352100 |





