(S)-(+)-2-Butanol
[CAS 4221-99-2]

Identification

• Name: (S)-(+)-2-Butanol
• Synonyms: (S)-(+)-sec-Butanol
• Molecular Formula: C₄H₁₀O
• Molecular Weight: 74.12
• CAS Registry Number: 4221-99-2
• EC Number: 224-168-1

Properties

• Density: 0.803
• Melting point: -114 °C
• Boiling point: 99-100 °C
• Refractive index: 1.396-1.398
• Flash point: 26 °C
• alpha: 13 ° (neat)
• Water solubility: 125 g/L (20 °C)

Safety Data

• Hazard Symbols: GHS02;GHS07 Warning
• Risk Statements: H226-H335-H336-H319
• Safety Statements: S13;S24/25;S26;S46;S7/9

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Flammable liquids	Flam. Liq.	3	H226
Eye irritation	Eye Irrit.	2	H319
Specific target organ toxicity - single exposure	STOT SE	3	H335
Specific target organ toxicity - single exposure	STOT SE	3	H336
Eye irritation	Eye Irrit.	2A	H319
Reproductive toxicity	Repr.	2	H361
Flammable liquids	Flam. Liq.	2	H225
Skin irritation	Skin Irrit.	2	H315

• Transport Information: UN 1120