Cyclopropylacetylene
- Product Name
- Cyclopropylacetylene
- CAS No.
- 6746-94-7
- Chemical Name
- Cyclopropylacetylene
- Synonyms
- ETHYNYLCYCLOPROPANE;CYCLOPROPYLACETYLENE;CPAC;Cylopropylethylnen;Cylopropyl acetylene;Cyclopropyl acetylen;Cyclopropylacethylene;Cyclopropane,ethynyl-;CYCLOPROPYL ACETHLENE;ethylnyl-cyclopropane
- CBNumber
- CB2214654
- Molecular Formula
- C5H6
- Formula Weight
- 66.1
- MOL File
- 6746-94-7.mol
Cyclopropylacetylene Property
- 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
- 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
Hazard and Precautionary Statements (GHS)
- Symbol(GHS)
-
- Signal word
- Danger
- Hazard statements
-
H225Highly Flammable liquid and vapour
H315Causes skin irritation
H318Causes serious eye damage
H412Harmful to aquatic life with long lasting effects
- Precautionary statements
-
P210Keep away from heat/sparks/open flames/hot surfaces. — No smoking.
P233Keep container tightly closed.
P273Avoid release to the environment.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P303+P361+P353IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.
P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
N-Bromosuccinimide Price
- Product number
- 663018
- Product name
- Cyclopropylacetylene
- Purity
- Neat, 97%
- Packaging
- 5g
- Price
- $58.4
- Updated
- 2025/07/31
- Product number
- 663018
- Product name
- Cyclopropylacetylene
- Purity
- Neat, 97%
- Packaging
- 25g
- Price
- $97.9
- Updated
- 2025/07/31
- Product number
- C1984
- Product name
- Cyclopropylacetylene
- Purity
- >98.0%(GC)
- Packaging
- 5g
- Price
- $28
- Updated
- 2025/07/31
- Product number
- C1984
- Product name
- Cyclopropylacetylene
- Purity
- >98.0%(GC)
- Packaging
- 25g
- Price
- $94
- Updated
- 2025/07/31
- Product number
- 89551
- Product name
- CYCLOPROPYLACETYLENE,98%
- Packaging
- 10g
- Price
- $68.33
- Updated
- 2021/12/16
Cyclopropylacetylene Chemical Properties,Usage,Production
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.
Synthesis
40459-85-6
6746-94-7
The general procedure for synthesizing cyclopropylacetylene from (1,1-dichloroethyl)cyclopropane was as follows: 1) 80 g of sodium hydroxide was mixed with 300 mL of ethoxyethanol and stirred at -60 °C, followed by the slow addition of 100 g of chlorocyclopropylacetylene at the same temperature. After the reaction was completed (the reaction process was monitored by gas chromatography analysis), atmospheric pressure distillation was performed to collect the 55 °C-65 °C fraction to obtain crude cyclopropylacetylene; 2) The crude cyclopropylacetylene was purified by distillation with continuous stirring. Finally, 59 g of cyclopropylacetylene with a purity greater than 98% was obtained, with a yield of 89%.
References
[1] Patent: CN105985223, 2016, A. Location in patent: Paragraph 0049; 0050; 0051; 0052
[2] Journal of Organic Chemistry, 1976, vol. 41, # 7, p. 1237 - 1240
[3] Synthesis, 1972, p. 703
[4] Journal of the American Chemical Society, 1972, vol. 94, p. 1158 - 1163
[5] Synlett, 1999, # 12, p. 1948 - 1950
Cyclopropylacetylene Preparation Products And Raw materials
Raw materials
Preparation Products
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View Lastest Price from Cyclopropylacetylene manufacturers
- Product
- Cyclopropyl acetylene 6746-94-7
- Price
- US $10.00/KG
- Min. Order
- 1KG
- Purity
- 99%
- Supply Ability
- 10 mt
- Release date
- 2024-11-19
- Product
- Ethynylcyclopropane 6746-94-7
- Price
- US $786.00/Kg
- Min. Order
- 0.100Kg
- Purity
- 99 %
- Supply Ability
- 5000 Kg
- Release date
- 2025-04-08
- Product
- Cyclopropyl acetylene 6746-94-7
- Price
- US $0.00-0.00/KG
- Min. Order
- 1KG
- Purity
- 98%
- Supply Ability
- 1ton
- Release date
- 2022-10-10