Cyclopropylacetylene
Synonym(s):Ethynylcyclopropane
- CAS NO.:6746-94-7
- Empirical Formula: C5H6
- Molecular Weight: 66.1
- MDL number: MFCD02181090
- EINECS: 425-430-1
- SAFETY DATA SHEET (SDS)
- Update Date: 2024-11-19 15:53:33
What is Cyclopropylacetylene?
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
The Uses of Cyclopropylacetylene
Cyclopropylacetylene is used as an organic chemical synthesis intermediate.
Properties of Cyclopropylacetylene
Melting point: | 294 °C (decomp) |
Boiling point: | 79-80 °C |
Density | 0.7801 |
refractive index | n |
Flash point: | -5 °F |
storage temp. | 2-8°C |
solubility | Chloroform, Ethyl Acetate |
form | Liquid |
color | Clear colorless to light yellow |
Specific Gravity | 0.797 |
Water Solubility | Slightly soluble in water. |
InChI | InChI=1S/C5H6/c1-2-5-3-4-5/h1,5H,3-4H2 |
CAS DataBase Reference | 6746-94-7(CAS DataBase Reference) |
NIST Chemistry Reference | Cyclopropylacetylene(6746-94-7) |
Safety information for Cyclopropylacetylene
Signal word | Danger |
Pictogram(s) |
Flame Flammables GHS02 Corrosion Corrosives GHS05 |
GHS Hazard Statements |
H225:Flammable liquids H315:Skin corrosion/irritation H318:Serious eye damage/eye irritation H412:Hazardous to the aquatic environment, long-term hazard |
Precautionary Statement Codes |
P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P233:Keep container tightly closed. P273:Avoid release to the environment. P280:Wear protective gloves/protective clothing/eye protection/face protection. 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. |
Computed Descriptors for Cyclopropylacetylene
InChIKey | NPTDXPDGUHAFKC-UHFFFAOYSA-N |
SMILES | C1(C#C)CC1 |
Abamectin manufacturer
Aether Industries Limited
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