Isobutyric acid
ALDRICH/W222216 - natural, ≥99%, FCC, FG
Synonym: 2-Methylpropionic acid
CAS Number: 79-31-2
Empirical Formula (Hill Notation): C4H8O2
Molecular Weight: 88.11
EC Number: 201-195-7
MDL Number: MFCD00002658
Linear Formula: (CH3)2CHCO2H
Product Type: Chemical
| agency | follows IFRA guidelines |
| meets purity specifications of JECFA | |
| application(s) | flavors and fragrances |
| assay | ≥99% |
| autoignition temp. | 824 °F |
| bp | 153-154 °C (lit.) |
| density | 0.95 g/mL at 25 °C (lit.) |
| documentation | see Safety & Documentation for available documents |
| expl. lim. | 10 % |
| food allergen | no known allergens |
| fragrance allergen | no known allergens |
| grade | FG |
| Fragrance grade | |
| Kosher | |
| natural | |
| InChI | 1S/C4H8O2/c1-3(2)4(5)6/h3 |
| InChI key | KQNPFQTWMSNSAP-UHFFFAOYSA |
| mp | −47 °C (lit.) |
| organoleptic | butter; acidic; rancid |
| Quality Level | 400  |
| refractive index | n |
| reg. compliance | EU Regulation 1223/2009 |
| EU Regulation 1334/2008 & 178/2002 | |
| FCC | |
| FDA 21 CFR 117 | |
| FDA 21 CFR 172.515 | |
| SMILES string | CC(C)C(O)=O |
| vapor density | 3.04 (vs air) |
| vapor pressure | 1.5 mmHg ( 20 °C) |
| Other Notes: | Natural occurrence: Roman chamomile, strawberry, dairy products. |
| Packaging: | 1 kg in glass bottle |
| Packaging: | 100 g in glass bottle |
| Symbol |    GHS02,GHS05,GHS06 |
| Signal word | Danger |
| Hazard statements | H226 - H302 - H311 - H314 |
| Precautionary statements | P210 - P233 - P280 - P301 + P312 - P303 + P361 + P353 - P305 + P351 + P338 |
| Hazard Codes | C |
| Risk Statements | 10-21/22-34 |
| Safety Statements | 26-36/37/39-45 |
| RIDADR | UN 2529 8(3) / PGIII |
| WGK Germany | WGK 1 |
| Flash Point(F) | 131.0 °F - closed cup |
| Flash Point(C) | 55 °C - closed cup |
| Purity | ≥99% |
| bp | 153-154 °C (lit.) |
| mp | −47 °C (lit.) |
| Density | 0.95 g/mL at 25 °C (lit.) |
| Refractive Index | n |
| FEMA Number | 2222 |
| UNSPSC | 12164502 |