Cyclopropylacetylene Chemical Properties

Melting point:

294 °C (decomp)

Boiling point:

79-80 °C

Density 

0.7801

refractive index 

n20/D 1.4480

Flash point:

-5 °F

storage temp. 

2-8°C

solubility 

Chloroform, Ethyl Acetate

form 

Liquid

Specific Gravity

0.797

color 

Clear colorless to light yellow

Water Solubility 

Slightly soluble in water.

InChI

InChI=1S/C5H6/c1-2-5-3-4-5/h1,5H,3-4H2

InChIKey

NPTDXPDGUHAFKC-UHFFFAOYSA-N

SMILES

C1(C#C)CC1

CAS DataBase Reference

6746-94-7(CAS DataBase Reference)

NIST Chemistry Reference

Cyclopropylacetylene(6746-94-7)

Safety Information

Hazard Codes 

F,Xn,Xi

Risk Statements 

11-36/37/38-48/20-63-65-67-52/53-41-38-4-37/38-22

Safety Statements 

26-36/37-62-37/39-16-61-33-9-36/37/39-39

RIDADR 

UN 1294 3/PG 2

WGK Germany 

2

HazardClass 

IRRITANT, FLAMMABLE

HazardClass 

3

PackingGroup 

II

HS Code 

29021990

MSDS

• Language:English Provider:SigmaAldrich
• Language:English Provider:ACROS

Cyclopropylacetylene Usage And Synthesis

Preparation

Cyclopropylacetylene was prepared in a two-step procedure by dichlorination of cyclopropyl methyl ketone with phosphorus pentachloride (PCl5) followed by double dehydrohalogenation with a strong base. This sequence presented significant scale-up problems with low overall yields (20-25%).
Similarly, cyclopropylacetylene has been prepared by base-induced dehydrohalogenation of bromovinylcyclopropane . Cyclopropylacetylene has also been prepared from the 1-trimethylsilyl derivative of cyclopropylacetylene, which was prepared by treatment of 5-chloro-1-trimethylsilyl-1-pentyne with lithium diisopropylamide at ?78°C followed by warming to room temperature.

Chemical Properties

clear colorless to light yellow liquid

Uses

Cyclopropylacetylene is used as an organic chemical synthesis intermediate.

Cyclopropylacetylene(6746-94-7)Related Product Information

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