Melting point :-24.1°C (estimate)
Boiling point :154-157 °C (lit.)
Density :0.912 g/mL at 25 °C (lit.)
refractive index :n20/D 1.456(lit.)
Flash point :130 °F
storage temp. :2-8°C
pka :14.39±0.10(Predicted)
form :clear liquid
color :Colorless to Light yellow to Light orange
Specific Gravity :0.912
BRN :1735967
LogP :0.684 (est)
CAS DataBase Reference :10229-10-4(CAS DataBase Reference)
EPA Substance Registry System :3-Pentyn-1-ol (10229-10-4)

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. P233 Keep container tightly closed. P240 Ground/bond container and receiving equipment. P241 Use explosion-proof electrical/ventilating/lighting/…/equipment. P303+P361+P353 IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.