PRODUCT Properties
| Melting point: | 27°C (estimate) |
| Boiling point: | 135-136 °C (lit.) |
| Density | 0.8 g/mL at 25 °C (lit.) |
| refractive index | n |
| Flash point: | 74 °F |
| storage temp. | 2-8°C |
| solubility | Not miscible or difficult to mix. |
| form | Liquid |
| color | Clear colorless to faintly yellow |
| Specific Gravity | 0.817 |
| BRN | 1697275 |
| CAS DataBase Reference | 871-84-1(CAS DataBase Reference) |
| EPA Substance Registry System | 1,7-Octadiyne (871-84-1) |
Description and Uses
1,7-Octadiyne is an useful bifunctional chain extension unit. It participates in the formation of uranium(IV) vinyl complexes. It reacts with frustrated Lewis pair P(o-tolyl)3/B(C6F5)3 by acetylene C-C coupling to yield the zwitterionic product. It undergoes the reductive cyclization during reaction with Re2Cl4(?-dppm)2 (dppm = Ph2PCH2PPh2) and affords quadruply bonded dirhenium(III) complex Re2Cl3(?,η2-C8H7)(?-dppm)2.
Safety
| Symbol(GHS) |   GHS02,GHS07 |
| Signal word | Warning |
| Hazard statements | H226-H315-H319-H335 |
| Precautionary statements | P210-P233-P240-P241-P303+P361+P353-P305+P351+P338 |
| Hazard Codes | Xi |
| Risk Statements | 10-36/37/38 |
| Safety Statements | 16-26-36/37/39 |
| RIDADR | UN 3295 3/PG 3 |
| WGK Germany | 3 |
| TSCA | Yes |
| HazardClass | 3 |
| PackingGroup | III |
| HS Code | 29012990 |
