1-PENTYNE Chemical Properties

Melting point:

-106 °C

Boiling point:

40 °C(lit.)

Density 

0.691 g/mL at 25 °C(lit.)

vapor pressure 

6.8 psi ( 20 °C)

refractive index 

n20/D 1.385(lit.)

Flash point:

-34°C

storage temp. 

Store at +2°C to +8°C.

solubility 

1.05g/l

form 

Liquid

color 

Clear colorless to pale yellow

Water Solubility 

Soluble in water. (1.05 g/L) at 20°C.

BRN 

1697133

CAS DataBase Reference

627-19-0(CAS DataBase Reference)

EPA Substance Registry System

1-Pentyne (627-19-0)

Safety Information

Hazard Codes 

F,Xn

Risk Statements 

11-36/37/38-65

Safety Statements 

16-26-36-62

RIDADR 

UN 3295 3/PG 2

WGK Germany 

3

TSCA 

Yes

HS Code 

2901 29 00

HazardClass 

3

PackingGroup 

II

MSDS

• Language:English Provider:SigmaAldrich
• Language:English Provider:ACROS
• Language:English Provider:ALFA

1-PENTYNE Usage And Synthesis

Chemical Properties

Clear colorless to pale yellow liquid

Uses

1-Pentyne has been used in preparation of:lithium acetylides, required for asymmetric synthesis of α,α-dibranched propargyl sulfinamides. It is also used to synthesize 7-hydroxy-10-methoxy-3H-naphtho[2.1-b]pyrans.

Uses

1-Pentyne has been used in preparation of:

• lithium acetylides, required for asymmetric synthesis of α,α-dibranched propargyl sulfinamides
• 7-hydroxy-10-methoxy-3H-naphtho[2.1-b]pyrans

General Description

Selective and non-selective hydrogenation of 1-pentyne catalyzed by silica-supported palladium has been studied by in situ X-ray absorption spectroscopy.

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

1-PENTYNE(627-19-0)Related Product Information

• 1-Chloro-4-pentyn
• 1-Octyn-3-ol
• 17a-Ethynyl-1,3,5(10)-estratriene-3,17b-diol 3-methyl ether
• 4-Fluorocinnamic acid
• 3-Methyl-1-pentyn-3-ol
• 1-ETHYNYLCYCLOHEXENE
• 1-Pentyne-5-ol
• 5-HEXYN-1-OL
• 1-ETHYNYLCYCLOHEXYLAMINE
• 1-Ethynyl-1-cyclohexanol
• 1-ETHYNYLCYCLOPENTANOL
• 2-OCTYNOIC ACID
• 3,6-DIMETHYL-4-OCTYN-3,6-DIOL
• 1-PENTYN-3-OL
• CYCLOHEXYLACETYLENE
• 5-CYANO-1-PENTYNE
• Ethisterone
• Ethynyl estradiol