Isobutyraldehyde
ALDRICH/W222003 - ≥98%, FG
Synonym: 2-Methylpropanal; Isobutanal; 2-Methylpropanal; 2-
CAS Number: 78-84-2
Empirical Formula (Hill Notation): C4H8O
Molecular Weight: 72.11
EC Number: 201-149-6
MDL Number: MFCD00006980
Linear Formula: (CH3)2CHCHO
Product Type: Chemical
| agency | follows IFRA guidelines |
| meets purity specifications of JECFA | |
| application(s) | flavors and fragrances |
| assay | ≥98% |
| autoignition temp. | 384 °F |
| biological source | synthetic |
| bp | 63 °C (lit.) |
| density | 0.79 g/mL at 25 °C (lit.) |
| documentation | see Safety & Documentation for available documents |
| expl. lim. | 10 %, 25 °F |
| 2 %, 32 °F | |
| food allergen | no known allergens |
| fragrance allergen | no known allergens |
| grade | FG |
| Fragrance grade | |
| Halal | |
| Kosher | |
| InChI | 1S/C4H8O/c1-4(2)3-5/h3-4H |
| InChI key | AMIMRNSIRUDHCM-UHFFFAOYSA |
| mp | −65 °C (lit.) |
| organoleptic | fresh; green; floral |
| Quality Level | 300 ![]() |
400 ![]() |
|
| refractive index | n |
| reg. compliance | EU Regulation 1223/2009 |
| EU Regulation 1334/2008 & 178/2002 | |
| FDA 21 CFR 117 | |
| FDA 21 CFR 172.515 | |
| SMILES string | [H]C(=O)C(C)C |
| solubility | 60 g/L at 25 °C |
| storage temp. | 2-8°C |
| vapor density | 2.5 (vs air) |
| vapor pressure | 66 mmHg ( 4.4 °C) |
| General description: | Isobutyraldehyde is an aliphatic aldehyde that can be used as a flavoring agent. It has been identified as one of the volatile flavor components in wheat essence. Some humans are anosmic towards the odor of isobutanal. |
| Packaging: | 1 drum in steel drum |
| Packaging: | 1 kg in glass bottle |
| Packaging: | 4, 8, 20 kg in composite drum |
| Symbol | ![]() GHS02,GHS07 |
| Signal word | Danger |
| Hazard statements | H225 - H319 |
| Precautionary statements | P210 - P233 - P240 - P241 - P242 - P305 + P351 + P338 |
| Hazard Codes | F,Xi |
| Risk Statements | 11-36 |
| Safety Statements | 16-26 |
| RIDADR | UN 2045 3 / PGII |
| WGK Germany | WGK 1 |
| Flash Point(F) | -11.2 °F - closed cup |
| Flash Point(C) | -24 °C - closed cup |
| Purity | ≥98% |
| bp | 63 °C (lit.) |
| mp | −65 °C (lit.) |
| Density | 0.79 g/mL at 25 °C (lit.) |
| Refractive Index | n |
| Storage Temp. | 2-8°C |
| FEMA Number | 2220 |
| UNSPSC | 12164502 |



