1,5-Cyclooctadiene
1,5-Cyclooctadiene (CAS: 111-78-4, C8H12) is a cyclic diolefin with a molecular weight of 108.18 g/mol. This colourless liquid serves as a valuable building block in organic synthesis. Its conjugated diene system makes it a versatile precursor for the creation of various organic compounds and complex molecular structures. It is widely utilised in research and development settings for chemical synthesis.
- Synonyms
- 1,5-CODCycloocta-1,5-diene
Organic Synthesis Precursor
1,5-Cyclooctadiene is a key intermediate in organic chemistry, enabling the construction of more complex cyclic and acyclic molecules. Its reactive double bonds participate readily in addition reactions and cycloadditions.
Ligand in Organometallic Chemistry
This compound can act as a ligand in coordination chemistry, forming complexes with transition metals. These complexes often find applications as catalysts in various organic transformations.
Polymerisation Monomer
The presence of two double bonds allows 1,5-Cyclooctadiene to be considered as a potential monomer in polymerisation reactions, leading to the formation of unsaturated polymers.
| Molecular weight | 108.18 |
|---|---|
| Empirical formula | C8H12 |
| Assay | ≥99.0% (GC) |
| Boiling point | 149-150 °C(lit.) |
| Density | 0.882 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.493(lit.)n20/D 1.494 |
| Vapour pressure | 25.8 mmHg (37.7 °C)6.8 mmHg (25 °C) |
| Melting point | −69 °C(lit.) |
| Autoignition temp | 431 °F |
| Storage temperature | 2-8°C |
Hazard statements
- H226Flammable liquid and vapour
- H302Harmful if swallowed
- H315Causes skin irritation
- H317May cause an allergic skin reaction
- H319Causes serious eye irritation
Precautionary statements
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
| Protective equipment | Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 38 °C / 100.4 °F |
| Transport (UN / ADR) | UN 2520 3 / PGIII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 10-19-20/22-36/38-43 |
| Safety statements (S) | 26-36 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is 1,5-Cyclooctadiene primarily used for?
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1,5-Cyclooctadiene is primarily used as a building block in organic synthesis and as a ligand in organometallic chemistry.
What is the CAS number and molecular formula for 1,5-Cyclooctadiene?
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The CAS number for 1,5-Cyclooctadiene is 111-78-4, and its molecular formula is C8H12.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 1,5-Cyclooctadiene with an assay of ≥99.0% (GC). We do not represent this product as USP, BP, or EP grade.
What are the main safety hazards associated with 1,5-Cyclooctadiene?
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1,5-Cyclooctadiene is a flammable liquid (H226) and is harmful if swallowed or inhaled (H302 + H332). It also causes skin irritation (H315), may cause an allergic skin reaction (H317), and causes serious eye irritation (H319).
Is 1,5-Cyclooctadiene a controlled substance?
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The provided data does not indicate that 1,5-Cyclooctadiene is a controlled substance.
How is 1,5-Cyclooctadiene packed and shipped by TSS?
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1,5-Cyclooctadiene is typically stored at 2-8°C and is shipped according to relevant transportation regulations, such as UN 2520, Hazard Class 3, Packing Group III.
How can I request a quote or sample for 1,5-Cyclooctadiene?
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Please contact our sales department via the website or direct email to request a quote or sample for 1,5-Cyclooctadiene.
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