tert-Butyl alcohol

*tert*-Butyl alcohol
Names
	Preferred IUPAC name 2-Methylpropan-2-ol
	Other names t-Butyl alcohol; tert-Butanol; t-Butanol; t-BuOH; Trimethyl carbinol; Tertiary butanol; 2-Methyl-2-propanol; 2M2P;
Identifiers
CAS Number	75-65-0 ;
3D model (JSmol)	Interactive image;
Beilstein Reference	906698
ChEBI	CHEBI:45895 ;
ChEMBL	ChEMBL16502 ;
ChemSpider	6146 ;
DrugBank	DB03900 ;
ECHA InfoCard	100.000.809
EC Number	200-889-7;
Gmelin Reference	1833
MeSH	tert-Butyl+Alcohol
PubChem CID	6386;
RTECS number	EO1925000;
UNII	MD83SFE959 ;
UN number	1120
CompTox Dashboard (EPA)	DTXSID8020204 ;
	InChI InChI=1S/C4H10O/c1-4(2,3)5/h5H,1-3H3 Key: DKGAVHZHDRPRBM-UHFFFAOYSA-N ;
	SMILES CC(C)(C)O;
Properties
Chemical formula	(CH3)3COH
Molar mass	74.123 g·mol−1
Appearance	Colorless solid
Odor	Camphorous
Density	0.775 g/mL
Melting point	25 to 26 °C; 77 to 79 °F; 298 to 299 K
Boiling point	82 to 83 °C; 179 to 181 °F; 355 to 356 K
Solubility in water	miscible
Solubility	Miscible with ethanol and diethyl ether
log P	0.584
Vapor pressure	4.1 kPa (at 20 °C)
Acidity (pKa)	16.54
Magnetic susceptibility (χ)	5.742×10−5 cm3/mol
Refractive index (nD)	1.387
Dipole moment	1.31 D
Thermochemistry
Heat capacity (C)	215.37 J/(K·mol)
Std molar; entropy (S⦵298)	189.5 J/(K·mol)
Std enthalpy of; formation (ΔfH⦵298)	−360.04 to −358.36 kJ/mol
Std enthalpy of; combustion (ΔcH⦵298)	−2.64479 to −2.64321 MJ/mol
Hazards
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H225, H319, H332, H335
Precautionary statements	P210, P261, P305+P351+P338
NFPA 704 (fire diamond)	2 3 0
Flash point	11 °C (52 °F; 284 K)
Autoignition; temperature	480 °C (896 °F; 753 K)
Explosive limits	2.4–8.0%
	Lethal dose or concentration (LD, LC):
LD50 (median dose)	3559 mg/kg (rabbit, oral); 3500 mg/kg (rat, oral)
	NIOSH (US health exposure limits):
PEL (Permissible)	TWA 100 ppm (300 mg/m3)
REL (Recommended)	TWA 100 ppm (300 mg/m3) ST 150 ppm (450 mg/m3)
IDLH (Immediate danger)	1600 ppm
Safety data sheet (SDS)	inchem.org
Related compounds
Related butanols	2-Butanol; n-Butanol; Isobutanol;
Related compounds	2-Methyl-2-butanol; Trimethylsilanol; Nonafluoro-tert-butyl alcohol;
	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

tert-Butyl alcohol is the simplest tertiary alcohol, with a formula of (CH₃)₃COH (sometimes represented as t-BuOH). Its isomers are 1-butanol, isobutanol, and 2-butanol. tert-Butyl alcohol is a colorless solid, which melts near room temperature and has a camphor-like odor. It is miscible with water, ethanol and diethyl ether.