1,6-HEPTADIYNE Property

Melting point:

-85 °C

Boiling point:

111.5 °C (lit.)

Density 

0.805 g/mL at 25 °C (lit.)

refractive index 

n20/D 1.441(lit.)

Flash point:

49 °F

storage temp. 

2-8°C

form 

Liquid

Specific Gravity

0.805

color 

Clear yellow

Water Solubility 

Insoluble in water.

BRN 

1731756

CAS DataBase Reference

2396-63-6(CAS DataBase Reference)

EPA Substance Registry System

1,6-Heptadiyne (2396-63-6)

Safety

Hazard Codes 

F

Risk Statements 

11

Safety Statements 

16-29-33

RIDADR 

UN 3295 3/PG 2

WGK Germany 

2

RTECS 

MI5600000

TSCA 

Yes

HazardClass 

3

PackingGroup 

II

HS Code 

29012990

Toxicity

dog,LD50,oral,3830mg/kg (3830mg/kg),GASTROINTESTINAL: NAUSEA OR VOMITINGLIVER: "HEPATITIS, FIBROUS (CIRRHOSIS, POST-NECROTIC SCARRING)"BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY),Federation Proceedings, Federation of American Societies for Experimental Biology. Vol. 19, Pg. 389, 1960.

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H225Highly Flammable liquid and vapour

Precautionary statements

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

1,6-HEPTADIYNE Chemical Properties,Usage,Production

Chemical Properties

clear yellow liquid

Uses

1,6-Heptadiyne may be used in the preparation of free-standing polymer films of poly(1,6-heptadiyne). Polymerization of 1,6-heptadiyne using an insoluble Zeigler-Natta catalyst affords soluble polymer having six-membered ring containing polyene. Ruthenium(II)-catalyzed reaction of a substituted 1,6-heptadiyne with norbornene affords a tandem [2+ 2+ 2]/[4+2] cycloaddition product and a [2+ 2+2] cycloadduct.

General Description

Polymerization of 1,6-heptadiyne using an insoluble Zeigler-Natta catalyst affords soluble polymer having six-membered ring containing polyene. Ruthenium(II)-catalyzed reaction of a substituted 1,6-heptadiyne with norbornene affords a tandem [2+ 2+ 2]/[4+2] cycloaddition product and a [2+ 2+2] cycloadduct. Cyclocopolymerization of 1,6-heptadiyne with dipropargyl ether under nitrogen atmosphere using KSCN, KBr and KI as initiators in N,N-dimethyl formamide has been studied.