4-Hydroxy-2-butanone
[CAS# 590-90-9]

Identification

• Classification: Chemical reagent >> Organic reagent >> Fatty ketone (including enol)
• Name: 4-Hydroxy-2-butanone
• Synonyms: 2-Hydroxyethyl methyl ketone
• Molecular Formula: C₄H₈O₂
• Molecular Weight: 88.11
• CAS Registry Number: 590-90-9
• EC Number: 209-693-6

Properties

• Density: 1.023
• Boiling point: 73-76 ºC (12 mmHg)
• Refractive index: 1.430
• Flash point: 91 ºF

Safety Data

• Risk Codes: R10
• Safety Description: S16

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Skin irritation	Skin Irrit.	2	H315
Serious eye damage	Eye Dam.	1	H318
Skin sensitization	Skin Sens.	1B	H317
Flammable liquids	Flam. Liq.	3	H226
Specific target organ toxicity - single exposure	STOT SE	3	H335
Eye irritation	Eye Irrit.	2	H319
Eye irritation	Eye Irrit.	2A	H319
Acute toxicity	Acute Tox.	4	H302
Skin sensitization	Skin Sens.	1	H317
Carcinogenicity	Carc.	2	H351
Acute toxicity	Acute Tox.	1	H330

• Transport Information: UN 1993