Crotonaldehyde
[CAS# 123-73-9]

Identification

• Classification: Organic raw materials >> Aldehyde
• Name: Crotonaldehyde
• Synonyms: (E)-2-Butenal
• Molecular Formula: C₄H₆O
• Molecular Weight: 70.09
• CAS Registry Number: 123-73-9
• EC Number: 204-647-1

Properties

• Density: 0.858
• Melting point: -74 ºC
• Boiling point: 101-103 ºC
• Refractive index: 1.4355-1.4375
• Flash point: 13 ºC
• Water solubility: 150 g/L (20 ºC)

Safety Data

• Hazard Symbols: GHS02;GHS06;GHS08;GHS05;GHS09 Danger
• Hazard Statements: H225-H341-H330-H311-H301-H335-H373-H315-H318-H400
• Safety Description: S26;S28A;S36/37/39;S45;S61

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Acute toxicity	Acute Tox.	3	H301
Skin irritation	Skin Irrit.	2	H315
Flammable liquids	Flam. Liq.	2	H225
Germ cell mutagenicity	Muta.	2	H341
Specific target organ toxicity - repeated exposure	STOT RE	2	H373
Specific target organ toxicity - single exposure	STOT SE	3	H335
Acute hazardous to the aquatic environment	Aquatic Acute	1	H400
Serious eye damage	Eye Dam.	1	H318
Acute toxicity	Acute Tox.	3	H311
Acute toxicity	Acute Tox.	2	H330
Acute toxicity	Acute Tox.	1	H330
Acute toxicity	Acute Tox.	1	H310
Specific target organ toxicity - repeated exposure	STOT RE	1	H372
Acute toxicity	Acute Tox.	2	H310

• Transport Information: UN 1143