2-Ethylbutyric acid
[CAS# 88-09-5]

Identification

• Classification: Pharmaceutical intermediate >> Heterocyclic compound intermediate >> Pyrimidine compound >> Carboxylic acid
• Name: 2-Ethylbutyric acid
• Molecular Formula: C₆H₁₂O₂
• Molecular Weight: 116.16
• CAS Registry Number: 88-09-5
• EC Number: 201-796-4
• FEMA: 2429

Properties

• Density: 0.924
• Melting point: -14 ºC
• Boiling point: 99-101 ºC (18 mmHg)
• Refractive index: 1.412-1.414
• Flash point: 87 ºC
• Water solubility: 18 g/L (20 ºC)

Safety Data

• Hazard Symbols: C
• Risk Codes: R21;R34
• Safety Description: S26;S36/37/39;S45

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Eye irritation	Eye Irrit.	2	H319
Acute toxicity	Acute Tox.	3	H311
Skin irritation	Skin Irrit.	2	H315
Specific target organ toxicity - single exposure	STOT SE	3	H335
Acute toxicity	Acute Tox.	4	H312
Specific target organ toxicity - repeated exposure	STOT RE	2	H373
Reproductive toxicity	Repr.	2	H361
Eye irritation	Eye Irrit.	2A	H319
Serious eye damage	Eye Dam.	1	H318
Chronic hazardous to the aquatic environment	Aquatic Chronic	2	H411