Name | 2-Octyne |
Synonyms | Octyne 2-OCTYNE 2-Octyne N-AMYLMETHYLACETYLENE Methyl pentyl acetylene METHYL-N-PENTYLACETYLENE |
CAS | 2809-67-8 |
EINECS | 220-553-3 |
InChI | InChI=1/C8H14/c1-3-5-7-8-6-4-2/h3,5,7-8H2,1-2H3 |
Molecular Formula | C8H14 |
Molar Mass | 110.197 |
Density | 0.765g/cm3 |
Melting Point | -61.6°C |
Boling Point | 136.4°C at 760 mmHg |
Flash Point | 24.1°C |
Vapor Presure | 9.16mmHg at 25°C |
Refractive Index | 1.429 |
Physical and Chemical Properties | Property 2-octyne molecular formula CH3(CH2)4C≡ C- CH3, one of acetylene derivatives, colorless liquid. The relative density of 2-octyne is 0.7596, the melting point is -61.6 ℃, and the boiling point is 138 ℃. It can be made by the interaction of sodium propyne and n-amyl chloride. 2-octyne is insoluble in water, soluble in alcohol, ether density relative density (water = 1)0.76. 2-Octyne is a medium flash point liquid. When exposed to heat, open flame, the oxidant is in danger of causing combustion and explosion. 2-octyne can be used as an intermediate in organic synthesis and chemical medicine synthesis, mainly used in laboratory research and development process and chemical medicine synthesis process. |
Use | Overview acetylene compounds are particularly useful as intermediates in the synthesis of agricultural chemicals and drugs and as monomers that can be converted into high strength polymers by cross-linking, and there is no variation in the chain structure of the molecule or no production of moisture and other gases. For example, a method of reacting an acetylene compound with other compounds. As a method which is also commonly used, the Japanese patent discloses a method of obtaining an acetylene derivative by halogenating a compound having a double bond once and then dehydrohalogenating it. Further, a method of heating a compound having two or more hydrogen atoms on the carbon atom at the α-position of the carbonyl group at 600 ° C. In the presence of a vanadium catalyst is disclosed. |
Risk Codes | R10 - Flammable R36/37/38 - Irritating to eyes, respiratory system and skin. R65 - Harmful: May cause lung damage if swallowed |
Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. S62 - If swallowed, do not induce vomitting; seek medical advice immediately and show this container or label. |
UN IDs | UN 3295 3/PG 1 |