3-Methyl-2-butenal
SIAL/W364620 - ≥97%, FG
Synonym: 3-
CAS Number: 107-86-8
Empirical Formula (Hill Notation): C5H8O
Molecular Weight: 84.12
EC Number: 203-527-6
MDL Number: MFCD00010291
Linear Formula: (CH3)2C=CHCHO
Product Type: Chemical
| agency | follows IFRA guidelines |
| application(s) | flavors and fragrances |
| assay | ≥97% |
| biological source | synthetic |
| bp | 133-135 °C (lit.) |
| density | 0.872 g/mL at 25 °C (lit.) |
| 0.878 g/mL at 20 °C | |
| documentation | see Safety & Documentation for available documents |
| food allergen | no known allergens |
| fragrance allergen | no known allergens |
| grade | FG |
| Fragrance grade | |
| Halal | |
| Kosher | |
| InChI | 1S/C5H8O/c1-5(2)3-4-6/h3- |
| InChI key | SEPQTYODOKLVSB-UHFFFAOYSA |
| organoleptic | cherry; fruity; nutty; sweet |
| Quality Level | 300 ![]() |
| refractive index | n |
| reg. compliance | EU Regulation 1223/2009 |
| EU Regulation 1334/2008 & 178/2002 | |
| SMILES string | [H]C(=O)C=C(C)C |
| storage temp. | 2-8°C |
| vapor pressure | 7 mmHg ( 20 °C) |
| Application: |
|
| Packaging: | 1 kg in poly bottle |
| Packaging: | 25, 100 g in poly bottle |
| Symbol | ![]() ![]() GHS02,GHS05,GHS06 |
| Signal word | Danger |
| Hazard statements | H226 - H302 - H314 - H317 - H331 |
| Precautionary statements | P210 - P280 - P301 + P330 + P331 - P303 + P361 + P353 - P304 + P340 + P311 - P305 + P351 + P338 |
| RIDADR | UN 2920 3(8) / PGII |
| WGK Germany | WGK 2 |
| Flash Point(F) | 91.4 °F - closed cup |
| Flash Point(C) | 33 °C - closed cup |
| Purity | ≥97% |
| bp | 133-135 °C (lit.) |
| Density | 0.878 g/mL at 20 °C; 0.872 g/mL at 25 °C (lit.) |
| Refractive Index | n |
| Storage Temp. | 2-8°C |
| FEMA Number | 3646 |
| UNSPSC | 12164502 |




