Diacetone alcohol

Diacetone alcohol
Names
	Preferred IUPAC name 4-Hydroxy-4-methylpentan-2-one
	Other names 4-Hydroxy-4-methyl-2-pentanone; 4-Hydroxy-2-keto-4-methylpentane; Diacetone alcohol
Identifiers
CAS Number	123-42-2 ;
3D model (JSmol)	Interactive image;
Beilstein Reference	1740440
ChEBI	CHEBI:55381 ;
ChemSpider	13838151 ;
ECHA InfoCard	100.004.207
EC Number	204-626-7;
PubChem CID	31256;
RTECS number	SA9100000;
UNII	Q7WP157PTD;
UN number	1148
CompTox Dashboard (EPA)	DTXSID6024917 ;
	InChI InChI=1S/C6H12O2/c1-5(7)4-6(2,3)8/h8H,4H2,1-3H3 Key: SWXVUIWOUIDPGS-UHFFFAOYSA-N ; InChI=1/C6H12O2/c1-5(7)4-6(2,3)8/h8H,4H2,1-3H3 Key: SWXVUIWOUIDPGS-UHFFFAOYAN;
	SMILES CC(=O)CC(C)(C)O;
Properties
Chemical formula	C6H12O2
Molar mass	116.160 g·mol−1
Appearance	Colorless liquid
Odor	Odorless
Density	0.938 g/cm3
Melting point	−47 °C (−53 °F; 226 K)
Boiling point	166 °C (331 °F; 439 K)
Solubility in water	moderate
Solubility	most organic solvents
Refractive index (nD)	1.4235
Hazards
	Occupational safety and health (OHS/OSH):
Main hazards	Flammable
	GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H226, H319, H335
Precautionary statements	P210, P233, P240, P241, P242, P243, P261, P264, P271, P280, P303+P361+P353, P304+P340, P305+P351+P338, P312, P337+P313, P370+P378, P403+P233, P403+P235, P405, P501
Flash point	52 °C; 125 °F; 325 K
Explosive limits	1.8–6.9%
	Lethal dose or concentration (LD, LC):
LD50 (median dose)	4000 mg/kg (oral, rat); 4653 mg/kg (oral, rabbit); 3950 mg/kg (oral, mouse)
	NIOSH (US health exposure limits):
PEL (Permissible)	TWA 50 ppm (240 mg/m3)
Related compounds
Related compounds	Acetone; methyl isobutyl ketone
	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

Diacetone alcohol is an organic compound with the formula CH₃C(O)CH₂C(OH)(CH₃)₂, sometimes called DAA. This colorless liquid is a common synthetic intermediate used for the preparation of other compounds, and is also used as a solvent.