2-Methylheptanoic acid
Synonym(s):2-Methylheptanoic acid
- CAS NO.：1188-02-9
- Empirical Formula: C8H16O2
- Molecular Weight: 144.21
- MDL number: MFCD00142944
- EINECS: 214-704-2
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-04-22 18:57:36
What is 2-Methylheptanoic acid?
Description
2-Methylheptanoic acid has a fatty, sour odor (rancid-like) with a sour, fruity, and nut-like flavor. May be synthesized by decarboxylation of methylamyl malonic acid; two optically active isomers and an optically inactive form can be prepared.
Chemical properties
clear slightly yellow liquid
Chemical properties
2-Methylheptanoic acid has a fatty, sour odor (rancid-like); sour, fruity and nut-like flavor.
Occurrence
Reported found in lamb, mutton and tea
The Uses of 2-Methylheptanoic acid
2-Methylheptanoic Acid is used as a reagent in the synthesis of novel isoniazid derivatives with potent antitubercular activity.
Preparation
By decarboxylation of methylamyl malonic acid; two optically active isomers and an optically inactive form can be prepared
Definition
ChEBI: 2-Methylheptanoic acid is a medium-chain fatty acid.
Aroma threshold values
Detection: 29.5 ppm
Taste threshold values
Taste characteristics at 40 ppm: waxy, soapy, oily and fatty.
General Description
2-Methylheptanoic acid has been identified in honey.
Properties of 2-Methylheptanoic acid
| Boiling point: | 140 °C/30 mmHg (lit.) |
| Density | 0.906 g/mL at 25 °C (lit.) |
| refractive index | n |
| FEMA | 2706 | 2-METHYLHEPTANOIC ACID |
| Flash point: | >230 °F |
| storage temp. | Store below +30°C. |
| form | clear liquid |
| pka | 4.82±0.21(Predicted) |
| color | Colorless to Almost colorless |
| Odor | at 1.00 % in propylene glycol. waxy green cheese sweaty butter milk |
| JECFA Number | 1212 |
| CAS DataBase Reference | 1188-02-9(CAS DataBase Reference) |
| EPA Substance Registry System | Heptanoic acid, 2-methyl- (1188-02-9) |
Safety information for 2-Methylheptanoic acid
| Signal word | Warning |
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation |
| Precautionary Statement Codes |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P271:Use only outdoors or in a well-ventilated area. P280:Wear protective gloves/protective clothing/eye protection/face protection. P302+P352:IF ON SKIN: wash with plenty of soap and water. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
Computed Descriptors for 2-Methylheptanoic acid
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