Isobutyric acid
SIGMA/I1754 - 99%
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
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material. This image depicts SKU: I1754-100ML.
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material. This image depicts SKU: I1754-1L.
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material. This image depicts SKU: I1754-500ML.
| assay | 99% |
| autoignition temp. | 824 °F |
| bp | 153-154 °C (lit.) |
| density | 0.95 g/mL at 25 °C (lit.) |
| expl. lim. | 10 % |
| form | liquid |
| InChI | 1S/C4H8O2/c1-3(2)4(5)6/h3 |
| InChI key | KQNPFQTWMSNSAP-UHFFFAOYSA |
| mp | −47 °C (lit.) |
| Quality Level | 100  |
| refractive index | n |
| SMILES string | CC(C)C(O)=O |
| vapor density | 3.04 (vs air) |
| vapor pressure | 1.5 mmHg ( 20 °C) |
| Application: | Isobutyric acid can be used: • to synthesize butyl isobutyrate via esterification with n-butanol using lipases • as a precursor for Methacrylic acid (MAA) through catalytic oxidative dehydrogenation. It can be produced through fermentative pathways |
| General description: | Isobutyric acid is a carboxylic acid used as a building block in the production of active pharmaceutical ingredients (APIs). |
| Packaging: | 1 L in glass bottle |
| Packaging: | 100, 500 mL 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 |
| UNSPSC | 12352100 |