CAS
NO. |
6746-94-7 |
|
EINECS
NO. |
|
FORMULA |
C5H6 |
MOL
WT. |
66.10 |
H.S.
CODE
|
|
TOXICITY
|
|
SYNONYMS |
Ethynyl
cyclopropane; |
SMILES |
|
CLASSIFICATION
|
|
PHYSICAL
AND CHEMICAL PROPERTIES
|
PHYSICAL
STATE |
clear
liquid |
MELTING
POINT |
|
BOILING
POINT |
51
- 53 C |
SPECIFIC
GRAVITY |
0.778
- 0.780 |
SOLUBILITY
IN WATER |
|
pH |
|
VAPOR
DENSITY |
|
AUTOIGNITION |
|
NFPA
RATINGS |
Health:
2; Flammability: 2; Reactivity: 0 |
REFRACTIVE
INDEX
|
|
FLASH
POINT |
|
STABILITY |
Stable
under ordinary conditions |
APPLICATIONS
|
Alkynes are
aliphatic hydrocarbons that have one or more carbon-carbon triple bonds. The
general structure of the alkyne hydrocarbons with one triple bond is
CnH2n-2. They are insoluble
in water but easily soluble in common organic solvents of low polarity. The
features of alkynes in chemical synthesis is due to the acidity of hydrogen
atoms bonded to triply bonded carbons as well as the triple bonds themselves.
Addition reactions are typical in alkyne reactions; halogenation, hydrogenation,
hydrohalogenation, hydration, oxidative cleavage, nitrile formation and acidity
of terminal alkynes. Polymerisation and substitution reactions are also useful
in chemical synthesis.
- Addition
Reactions
- Catalytic
Hydrogenation by Pt and Pd hydrogenation catalysts to yeild alkanes without
isolation of alkene intermediates.
- Catalytic
Hydrogenation by Lindlar's catalyst to yeild cis- or trans- alkenes without
further reduction to alkanes
- Addition by
Electrophilic Reagents
- Addition of
halides (chlorine, bromine, iodine) to yield dihalogen substituted alkanes at
the double bond site
- Addition of
hydrogen halides (HCl, HBr, HI) to yield monohalogen substituted alkenes or
dihalogen substituted alkanes
- Hydration of
alkynes to yield ketone products through enol tautomer intermediate stage,
whereas the hydration of double bonds gives alcohol products (exceptionally
acetylene yields acetaldehyde ).
- Hydroboration by disiamylborane to yield ketones or
aldehydes
- Oxidation
cleavages of the triple-bond to give carboxylic acid products with oxidizing
agents (potassium permanganate and ozone)
- Nucleophilile Addition by sp-hybrid carbon atoms of
the triple-bond render alkynes (nitrile formation)
- Nucleophilile Reduction by solutions of sodium in
liquid ammonia to trans-alkenes
The name of
all alkynes end in "-yne" adding a prefix to indicate the location of the triple
bond in the molecule.
Cyclopropyl
Acetylene is used as an intermediate for the manufacturing
pharmaceuticals, and other organic compounds.
|
SALES
SPECIFICATION |
APPEARANCE
|
clear
liquid |
ASSAY |
98.0%
min (or 70 %
by weight in toluene)
|
MOISTURE |
0.5%
max
|
COLOR,
AHPA |
50max
|
TRANSPORTATION |
PACKING |
40kgs
in drum
|
HAZARD
CLASS |
3
(Packing
Group: II) |
UN
NO. |
2924 |
OTHER
INFORMATION |
Hazard Symbols: F C, Risk Phrases: 11-20-37/38-41,
Safety
Phrases: 16-26-29-36/37/39 |
LIST OF ALKYNES |
COMPOUND
|
SYNONYM
|
FORMULA
|
CAS
RN
|
M.P
(C)
|
B.P
(C)
|
Ethyne |
Acetylene |
C2H2 |
74-86-2 |
-84.0 |
-28 |
Propyne |
Methyl
acetylene |
C3H4 |
74-99-7 |
-103 |
-23 |
1,3-Butadiyne |
Diacetylene |
C4H2 |
460-12-8 |
|
10
|
1-Butyne |
Ethyl
acetylene |
C4H6 |
107-00-6 |
-125.7 |
8
|
2-Butyne |
Crotonylene |
C4H6 |
503-17-3 |
-32.2 |
27 |
1,3-Pentadiyne |
|
C5H4 |
4911-55-1 |
|
|
3-Penten-1-yne |
Propenyl acetylene |
C5H6 |
2206-23-7 |
|
|
2-Methyl-1-buten-3-yne |
Isopropenyl
acetylene |
C5H6 |
78-80-8 |
-113 |
32 |
1-Penten-3-yne
|
Methyl vinyl
acetylene |
C5H6 |
646-05-9 |
|
|
1-Penten-4-yne |
Allyl
acetylene |
C5H6 |
871-28-3 |
|
|
2-Pentyne |
Ethyl methyl
acetylene |
C5H8 |
627-21-4 |
-109 |
56 |
3-Methyl-1-butyne
|
Isopropyl
acetylene |
C5H8 |
598-23-2 |
-89.7 |
26
|
1-Pentyne |
Propyl
acetylene |
C5H8 |
627-19-0 |
-106 |
40
|
3-Hexyne |
Diethyl
acetylene |
C6H10 |
928-49-4 |
-103 |
81
|
2-Hexyne |
Methyl propyl
acetylene |
C6H10 |
764-35-2 |
-89.1 |
84
|
4-Methyl-1-pentyne
|
Isobutyl
acetylene
|
C6H10 |
7154-75-8 |
-105 |
61
|
1-Hexyne |
Butyl
acetylene |
C6H10 |
693-02-7 |
-131.9 |
71
|
3-Methyl-1-pentyne
|
sec-Butyl acetylene |
C6H10 |
922-59-8 |
|
58
|
4-Methyl-2-pentyne
|
Isopropyl methyl
acetylene |
C6H10 |
21020-27-9 |
-110 |
73
|
3,3-Dimethyl-1-butyne
|
tert-Butyl acetylene |
C6H10 |
917-92-0 |
-78.2 |
38 |
1,5-Hexadiyne |
Dipropargyl |
C6H6 |
628-16-0 |
-6 |
86
|
1,4-Hexadiyne |
|
C6H6 |
10420-91-4 |
|
79
|
1,5-Hexadien-3-yne
|
Divinyl
acetylene |
C6H6 |
821-08-9 |
|
|
1-Hexen-3-yne
|
Ethyl vinyl
acetylene
|
C6H8 |
13721-54-5 |
|
84
|
4-Methyl-2-hexyne
|
sec-Butyl methyl acetylene |
C7H12
|
20198-49-6 |
-108 |
100
|
2-Methyl-3-hexyne
|
Isopropyl ethyl
acetylene |
C7H12 |
|
-117 |
95
|
5-Methyl-2-hexyne
|
Isobutyl methyl
acetylene |
C7H12 |
53566-37-3 |
-93 |
102
|
3-Ethyl-1-pentyne |
|
C7H12 |
|
|
84 |
1-Heptyne |
n-Pentyl acetylene |
C7H12 |
628-71-7 |
-81 |
100
|
4,4-Dimethyl-2-pentyne
|
tert-Butyl methyl acetylene |
C7H12 |
999-78-0 |
|
83
|
3-Heptyne |
Ethyl propyl
acetylene |
C7H12 |
2586-89-2 |
-131 |
107
|
4,4-Dimethyl-1-pentyne
|
Neopentyl
acetylene |
C7H12 |
|
-75 |
78
|
2-Heptyne
|
n-Butyl methyl acetylene |
C7H12 |
1119-65-9 |
|
112
|
1,6-Heptadiyne |
|
C7H8 |
2396-63-6 |
|
108
|
1,7-Octadiyne |
|
C8H10 |
871-84-1 |
|
135
|
2,6-Octadiyne |
|
C8H10 |
764-73-8 |
|
|
Cyclooctyne |
|
C8H12 |
1781-78-8 |
|
|
4-Octyne |
Dipropyl
acetylene |
C8H14 |
1942-45-6 |
-102.5 |
132
|
1-Octyne |
n-Hexyl acetylene |
C8H14 |
629-05-0 |
-79.3 |
126 |
3-Octyne |
n-Butyl ethyl acetylene |
C8H14 |
15232-76-5 |
-104 |
133
|
2-Octyne
|
n-Pentyl methyl acetylene |
C8H14 |
2809-67-8 |
-61.6 |
138 |
1,8-Nonadiyne |
|
C9H12 |
2396-65-8 |
-21 |
|
Cyclononyne |
|
C9H14 |
6573-52-0 |
|
|
1-Nonyne |
n-Heptyl acetylene |
C9H16 |
3452-09-3 |
-50 |
151 |
3-Nonyne
|
Methyl n-pentyl acetylene |
C9H16 |
20184-89-8 |
|
157 |
2-Nonyne
|
n-Hexyl methyl acetylene |
C9H16 |
19447-29-1 |
|
162
|
4-Nonyne |
n-Butyl propyl acetylene |
C9H16 |
20184-91-2 |
|
|
Cyclodecyne |
|
C10H16 |
3022-41-1 |
|
|
5-Decyne |
Di-n-butyl
acetylene |
C10H18 |
1942-46-7 |
-73 |
|
3-Decyne |
Ethyl
n-hexyl acetylene |
C10H18 |
2384-85-2 |
|
179
|
1-Decyne |
n-Octyl acetylene |
C10H18 |
764-93-2 |
-44 |
174
|
2,2,5,5-Tetramethyl-3-hexyne
|
Di-tert-butyl acetylene |
C10H18 |
17530-24-4 |
|
|
1-Undecyne |
n-Nonyl acetylene |
C11H20 |
2243-98-3 |
-25 |
195
|
6-Dodecyne |
Di-n-pentyl
acetylene |
C12H22 |
6975-99-1 |
|
|
1-Dodecyne |
n-Decyl acetylene |
C12H22 |
765-03-7 |
-19 |
225
|
1-Tridecyne |
n-Undecyl
acetylene |
C13H24 |
26186-02-7 |
-5 |
234
|
1-Tetradecyne |
n-Dodecyl
acetylene |
C14H26 |
765-10-6 |
|
252
|
1-Pentadecyne |
n-Tridecyl
acetylene |
C15H28 |
765-13-9 |
10 |
269
|
1-Hexadecyne
|
n-Tetradecyl acetylene |
C16H30 |
629-74-3 |
25 |
285 |
1-Heptadecyne
|
n-Pentadecyl acetylene |
C17H32 |
26186-00-5 |
22 |
300
|
1-Heptadecyne
|
n-Pentadecyl acetylene |
C17H32 |
26186-00-5 |
22 |
300
|
2-Octadecyne |
|
C18H34 |
|
|
325
|
1-Octadecyne |
|
C18H34 |
629-89-0 |
|
|
1-Nonadecyne |
|
C19H36 |
|
33 |
329
|
1-Eicosyne |
1-Icosyne |
C20H38 |
|
36 |
342 |
|