Melting point :-2.2 °C (lit.)
Boiling point :142-143 °C (lit.)
Density :0.937 g/mL at 25 °C (lit.)
refractive index :n20/D 1.453(lit.)
Flash point :125 °F
storage temp. :Refrigerator
solubility :Miscible with chloroform and methanol.
form :Liquid
pka :13.14±0.10(Predicted)
Specific Gravity :0.937
color :Clear colorless to light yellow
BRN :1733676
Stability :Stable. Flammable.
InChI :1S/C4H6O/c1-2-3-4-5/h5H,4H2,1H3
InChIKey :NEEDEQSZOUAJMU-UHFFFAOYSA-N
SMILES :CC#CCO
CAS DataBase Reference :764-01-2(CAS DataBase Reference)
NIST Chemistry Reference :2-Butyn-1-ol(764-01-2)

Symbol(GHS):
Signal word:	Warning
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H226 Flammable liquid and vapour Flammable liquids Category 3 Warning H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning P264, P280, P302+P352, P321,P332+P313, P362 H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning
Precautionary statements:	P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P302+P352 IF ON SKIN: wash with plenty of soap and water. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.