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627-19-0

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Basic Information
CAS No.: 627-19-0
Name: 1-Pentyne
Article Data: 66
Molecular Structure:
Molecular Structure of 627-19-0 (1-Pentyne)
Formula: C5H8
Molecular Weight: 68.1185
Synonyms: 1-Pentine(3CI); Propylacetylene
EINECS: 210-987-1
Density: 0.718 g/cm3
Melting Point: ?106 to ?105 °C
Boiling Point: 40.9 °C at 760 mmHg
Flash Point: -34°C
Solubility: insoluble in water
Appearance: Clear, colorless liquid
Hazard Symbols: F,Xn
Risk Codes: 11-36/37/38-65
Safety: Dangerous fire hazard when exposed to heat or flame; can react vigorously with oxidizing materials. When heated to decomposition it emits acrid smoke and irritating fumes. See also ACETYLENE COMPOUNDS and ALKYNES.
PSA: 0.00000
LogP: 1.41970
Synthetic route
3234-49-9

1,2-dibromopentane

627-19-0

1-Pentyne

Conditions
ConditionsYield
With potassium hydroxide In xylene Heating;94%
With Aliquat 336; potassium hydroxide In water at 120℃; for 7h;80.9%
With petroleum; sodium amide at 160 - 170℃;
With potassium hydroxide; mineral oil at 250℃;
17615-01-9

1-(triphenyl-λ5-phosphanylidene)pentan-2-one

627-19-0

1-Pentyne

Conditions
ConditionsYield
at 750℃; under 0.01 Torr;59%
at 750℃;59%
18643-50-0

1-pentynyl lithium

A

627-19-0

1-Pentyne

B

16387-71-6

deca-4,6-diyne

Conditions
ConditionsYield
With dinitrogen tetraoxide In diethyl ether at -78℃; for 0.166667h; Product distribution;A 57%
B 30%
1066-26-8

sodium acetylide

106-94-5

propyl bromide

627-19-0

1-Pentyne

Conditions
ConditionsYield
In ammonium hydroxide at -35℃;56%
With ammonia
With tetrahydrofuran; N,N-dimethyl-formamide
In ammonia at -60℃;
In ammonia Alkylation;
110-62-3

pentanal

627-19-0

1-Pentyne

Conditions
ConditionsYield
With Nonafluorobutanesulfonyl fluoride; tert-butylimino-tri(pyrrolidino)phosphorane In N,N-dimethyl-formamide at -10 - 20℃;53%
27593-24-4

hex-2-ynal

627-19-0

1-Pentyne

Conditions
ConditionsYield
With sodium hydroxide In methanol at 85℃;40%
627-21-4

2-Pentyne

627-19-0

1-Pentyne

Conditions
ConditionsYield
With sodium at 100℃; Zers. des gebildeten Natriumpropylacetylens durch Wasser;
591-96-8

penta-2,3-diene

627-19-0

1-Pentyne

Conditions
ConditionsYield
With sodium at 100℃; Zers. des gebildeten Natriumpropylacetylens durch Wasser;
67747-70-0

2-chloro-pent-2-ene

627-19-0

1-Pentyne

34238-52-3

3-chloro-2-pentene

627-19-0

1-Pentyne

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    627-19-0

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    627-19-0

    1-PENTYNE

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Chemistry

IUPAC Name: 1-Pentyne
The MF of 1-Pentyne (627-19-0) is C5H8.

                 
The MW of 1-Pentyne (627-19-0) is 68.12.
Synonyms of 1-Pentyne (627-19-0): Acetylene, propyl- ; Ethylmethylacetylene ; Pent-1-in
Product Categories: Miscellaneous;Acetylenes;Alkynes;Organic Building Blocks;Terminal
Form: Clear colorless to pale yellow liquid
Index of Refraction: 1.401 
Density: 0.718 g/ml
Flash Point: -34 °C   
Boiling Point: 40.9 °C
Melting Point: -106 °C
Storage temp: 2-8 °C
BRN: 1697133

Uses

  1-Pentyne (627-19-0) is used as organic synthesis.

Safety Profile

Dangerous fire hazard when exposed to heat or flame; can react vigorously with oxidizing materials. When heated to decomposition it emits acrid smoke and irritating fumes. See also ACETYLENE COMPOUNDS and ALKYNES.
Safety information of 1-Pentyne (627-19-0):
Hazard Codes  F,Xn
Risk Statements 
11  Highly Flammable
36/37/38  Irritating to eyes, respiratory system and skin
65  Harmful: May cause lung damage if swallowed
Safety Statements 
16  Keep away from sources of ignition - No smoking
26  In case of contact with eyes, rinse immediately with plenty of water and seek medical advice
36  Wear suitable protective clothing
62  If swallowed, do not induce vomiting: seek medical advice immediately and show this container or label
RIDADR  UN 3295 3/PG 2
WGK Germany  3
HazardClass  3
PackingGroup  II