2-PENTYNE Property

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)

Safety

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

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H225Highly Flammable liquid and vapour

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P210Keep away from heat/sparks/open flames/hot surfaces. — No smoking.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

2-PENTYNE Chemical Properties,Usage,Production

Chemical Properties

clear colorless to slightly yellow liquid

Uses

2-Pentyne was used to test the catalytic activity of nanoparticles of palladium supported on bacterial biomass, bio-Pd.

Safety Profile

A very dangerous fire hazard when exposed to heat or flame; can react vigorously with oxidizing materials. Solutions with silver perchlorate explode on contact with mercury. When heated to decomposition it emits acrid smoke and irritating fumes.

Purification Methods

It is stood with, then distilled at low pressure from sodium or NaBH4. [Beilstein 1 III 958, 1 IV 992.]