Acrolein

Acrolein
Names
	Preferred IUPAC name Prop-2-enal
	Other names Acraldehyde; Acrylic aldehyde; Allyl aldehyde; Ethylene aldehyde; Acrylaldehyde
Identifiers
CAS Number	107-02-8 ;
3D model (JSmol)	Interactive image; Interactive image;
ChEBI	CHEBI:15368 ;
ChEMBL	ChEMBL721 ;
ChemSpider	7559 ;
ECHA InfoCard	100.003.141
EC Number	203-453-4;
IUPHAR/BPS	2418;
KEGG	C01471 ;
PubChem CID	7847;
RTECS number	AS1050000;
UNII	7864XYD3JJ ;
UN number	1092
CompTox Dashboard (EPA)	DTXSID5020023 ;
	InChI InChI=1S/C3H4O/c1-2-3-4/h2-3H,1H2 Key: HGINCPLSRVDWNT-UHFFFAOYSA-N ; InChI=1/C3H4O/c1-2-3-4/h2-3H,1H2 Key: HGINCPLSRVDWNT-UHFFFAOYAQ;
	SMILES O=CC=C; C=CC=O;
Properties
Chemical formula	C3H4O
Molar mass	56.064 g·mol−1
Appearance	Colorless to yellow liquid. Colorless gas in smoke.
Odor	Acrid, Foul, Irritating
Density	0.839 g/mL
Melting point	−88 °C (−126 °F; 185 K)
Boiling point	53 °C (127 °F; 326 K)
Solubility in water	Appreciable (> 10%)
Vapor pressure	210 mmHg
Hazards
	Occupational safety and health (OHS/OSH):
Main hazards	Highly poisonous. Causes severe irritation to exposed membranes. Extremely flammable liquid and vapor.
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H225, H300, H311, H314, H330, H410
Precautionary statements	P210, P233, P240, P241, P242, P243, P260, P264, P270, P271, P273, P280, P284, P301+P310, P301+P330+P331, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P310, P312, P320, P321, P322, P330, P361, P363, P370+P378, P391, P403+P233, P403+P235, P405, P501
NFPA 704 (fire diamond)	4 3 3
Flash point	−26 °C (−15 °F; 247 K)
Autoignition; temperature	278 °C (532 °F; 551 K)
Explosive limits	2.8-31%
	Lethal dose or concentration (LD, LC):
LC50 (median concentration)	875 ppm (mouse, 1 min); 175 ppm (mouse, 10 min); 150 ppm (dog, 30 min); 8 ppm (rat, 4 hr); 375 ppm (rat, 10 min); 25.4 ppm (hamster, 4 hr); 131 ppm (rat, 30 min)
LCLo (lowest published)	674 ppm (cat, 2 hr)
	NIOSH (US health exposure limits):
PEL (Permissible)	TWA 0.1 ppm (0.25 mg/m3)
REL (Recommended)	TWA 0.1 ppm (0.25 mg/m3) ST 0.3 ppm (0.8 mg/m3)
IDLH (Immediate danger)	2 ppm
Safety data sheet (SDS)	Sigma-Aldrich SDS
Related compounds
Related alkenals	Crotonaldehyde; cis-3-Hexenal; (E,E)-2,4-Decadienal
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Acrolein (systematic name: propenal) is the simplest unsaturated aldehyde. It is a colorless liquid with a foul and acrid aroma. The smell of burnt fat (as when cooking oil is heated to its smoke point) is caused by glycerol in the burning fat breaking down into acrolein. It is produced industrially from propene and mainly used as a biocide and a building block to other chemical compounds, such as the amino acid methionine.

^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ NIOSH Pocket Guide to Chemical Hazards. "#0011". National Institute for Occupational Safety and Health (NIOSH).
^ ^a ^b "Acrolein". Immediately Dangerous to Life or Health Concentrations (IDLH). National Institute for Occupational Safety and Health (NIOSH).
^ "Archived copy". Archived from the original on 2015-04-02. Retrieved 2015-03-26.{{cite web}}: CS1 maint: archived copy as title (link)

[NIOSH-1] ^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ NIOSH Pocket Guide to Chemical Hazards. "#0011". National Institute for Occupational Safety and Health (NIOSH).

[IDLH-2] "Acrolein". Immediately Dangerous to Life or Health Concentrations (IDLH). National Institute for Occupational Safety and Health (NIOSH).

[3] "Archived copy". Archived from the original on 2015-04-02. Retrieved 2015-03-26.{{cite web}}: CS1 maint: archived copy as title (link)

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