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2-PENTYNE Structure

2-PENTYNE

Chemical Properties

Melting point -109 °C (lit.)
Boiling point 56-57 °C (lit.)
Density  0.71 g/mL at 25 °C (lit.)
vapor pressure  393 mm Hg ( 37.7 °C)
refractive index  n20/D 1.404(lit.)
Flash point −23 °F
storage temp.  Flammables area
solubility  soluble in Ether,Alcohol,Benzene
form  Liquid
Specific Gravity 0.711
color  Clear colorless to slightly yellow
explosive limit 1.2-8.8%(V)
BRN  1696938
CAS DataBase Reference 627-21-4(CAS DataBase Reference)
FDA UNII 57NG6HKI9D

Safety

Symbol(GHS) GHS hazard pictogramsGHS hazard pictograms
Signal wordDanger
Hazard statements H225-H315-H319-H335
Precautionary statements P210-P302+P352-P305+P351+P338
Hazard Codes  F,Xi
Risk Statements  11-36/37/38
Safety Statements  16-26-36/37/39
RIDADR  UN 3295 3/PG 2
WGK Germany  3
F  10-23
HazardClass  3
PackingGroup  II
HS Code  29012900
NFPA 704:
3
2 0

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