1,9-DECADIYNE Property

Melting point:

-6.35°C (estimate)

Boiling point:

80-81 °C (10 mmHg)

Density 

0.822

refractive index 

1.449-1.453

Flash point:

60°C

storage temp. 

Flammables area

form 

Liquid

Specific Gravity

0.816

color 

Clear yellow

Water Solubility 

Insoluble in water.

BRN 

1734594

CAS DataBase Reference

1720-38-3(CAS DataBase Reference)

EPA Substance Registry System

1,9-Decadiyne (1720-38-3)

Safety

Risk Statements 

10

Safety Statements 

16

RIDADR 

1993

TSCA 

Yes

HazardClass 

3

PackingGroup 

III

HS Code 

29012900

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H226Flammable liquid and vapour

H227Combustible liquid

H304May be fatal if swallowed and enters airways

Precautionary statements

P210Keep away from heat/sparks/open flames/hot surfaces. — No smoking.

P240Ground/bond container and receiving equipment.

P241Use explosion-proof electrical/ventilating/lighting/…/equipment.

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.

P370+P378In case of fire: Use … for extinction.

P403+P235Store in a well-ventilated place. Keep cool.

P405Store locked up.

P501Dispose of contents/container to..…

1,9-DECADIYNE Chemical Properties,Usage,Production

Chemical Properties

Clear yellow liquid

Uses

One-step synthesis of carbametacyclophane 3 from 1,9-decadiyne and diethyl acetylenedicarboxylate is described. The use of 1,9-decadiyne as a nucleophile led only to the monoalkynylation product, a selectivity that would be difficult to achieve with a catalytic in situ metalation process. 1,9-decadiyne reacts with iodobenzene (excess) to afford the bis-Sonogashira coupling product in excellent yield. 1,9-Decadiyne was dihydrated and gave 2,9-decanedione in 92% yield.

Definition

ChEBI: Deca-1,9-diyne is an alkadiyne and a terminal acetylenic compound.