1,9-Decadiyne
- CAS NO.：1720-38-3
- Empirical Formula: C10H14
- Molecular Weight: 134.22
- MDL number: MFCD00014926
- EINECS: 217-012-9
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-09-12 18:50:37
What is 1,9-Decadiyne?
Chemical properties
Clear yellow liquid
The Uses of 1,9-Decadiyne
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.
Properties of 1,9-Decadiyne
| 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 |
| color | Clear yellow |
| Specific Gravity | 0.816 |
| 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 information for 1,9-Decadiyne
| Signal word | Danger |
| Pictogram(s) |
 Flame Flammables GHS02  Health Hazard GHS08 |
| GHS Hazard Statements |
H226:Flammable liquids H227:Flammable liquids H304:Aspiration hazard |
| Precautionary Statement Codes |
P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P240:Ground/bond container and receiving equipment. P241:Use explosion-proof electrical/ventilating/lighting/…/equipment. P280:Wear protective gloves/protective clothing/eye protection/face protection. P303+P361+P353:IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. P370+P378:In case of fire: Use … for extinction. P405:Store locked up. P403+P235:Store in a well-ventilated place. Keep cool. P501:Dispose of contents/container to..… |
Computed Descriptors for 1,9-Decadiyne
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