Molekula
1,5-Cyclooctadiene
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 1999 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
1,5-Cyclooctadiene is a cyclic diene used as a ligand in organometallic chemistry and as a precursor in catalytic processes. It also serves as an intermediate for resins and as the third monomer in ethylene-propylene terpolymer (EPT) rubber manufacture. It is a colorless liquid with a pungent odor. CAS: 111-78-4, Molecular formula: C8H12, Molecular weight: 108.18 g/mol. Store at ambient temperature. Hazard classification: Danger. Molekula supplies 1,5-Cyclooctadiene from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
Pack sizes & pricing
Pricing on request — packs available from research to bulk quantities.
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Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | Clear colourless liquid |
| Colour | ≤ 20 |
| Purity | ≥ 99.0% |
| Moisture | ≤ 500ppm |
| 4-Vinyl-1-cyclohexene content | ≤ 1.0% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Flash Point | 38 °C |
| Transport Class | 3 |
| Packing Group | III |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | Liquid |
| Melting Point | -69 °C |
| Boiling Point | 150.8 °C at 757 mmHg |
| Vapour Pressure | 4.95 mmHg |
| Refractive Index | 1.4095 |
Source: PubChem CID 82916 (HSDB, PAC Chemical Database, Haz-Map)
Identification
| Property | Value |
|---|---|
| SKU | 90031035 |
| CAS Number | 111-78-4 |
| IUPAC Name | (1Z,5Z)-cycloocta-1,5-diene |
| EC Number | 203-907-1 |
| Molecular Formula | C8H12 |
| Molecular Weight | 108.18 |
| Exact Mass | 108.0939 |
| SMILES | C1/C=C\CC/C=C\C1 |
| InChIKey | VYXHVRARDIDEHS-QGTKBVGQSA-N |
| InChI | InChI=1S/C8H12/c1-2-4-6-8-7-5-3-1/h1-2,7-8H,3-6H2/b2-1-,8-7- |
| PubChem CID | 82916 |
| UN Number | UN2520 |
| REACH Code | Y110 |
| HTS Code | 2902.19.00.50 |
| Tariff Code | 2902190000 |
Safety & GHS
-
Flammable
GHS02
-
Health Hazard
GHS07
-
Serious Health Hazard
GHS08
-
Hazardous to the Environment
GHS09
Hazard statements
- H226 Flammable liquid and vapour
- H302 Harmful if swallowed
- H304 May be fatal if swallowed and enters airways
- H317 May cause an allergic skin reaction
- H332 Harmful if inhaled
- H400 Very toxic to aquatic life
- H410 Very toxic to aquatic life with long lasting effects
Precautionary statements
- P210 Keep away from heat/sparks/open flames/hot surfaces - No smoking
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P273 Avoid release to the environment
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician
- P301+330 IF SWALLOWED: Rinse mouth. Do NOT induce vomiting
- P304+340 IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Quality certificates
Molekula Group is certified to ISO 9001:2015 (quality) and ISO 14001:2015 (environmental management), audited by a UKAS-accredited body. Both certificates are valid to 17 May 2028.
Synonyms
- (1Z,5Z)-1,5-Cyclooctadiene
- (1Z,5Z)-cycloocta-1,5-diene
- (Z,Z)-1,5-Cyclooctadiene
- 1,5-cyclooctadiene, (1Z,5Z)-
- 1,5-Cyclooctadiene, (E,E)-
- 1,5-Cyclooctadiene, (Z,Z)-
- 1,5-Cyclooctadiene(COD)
- cis-1,5-cyclooctadiene
- cis,cis-1,5-Cyclooctadiene
- Cycloocta-1,5-diene
Frequently asked questions
What is 1,5-Cyclooctadiene used for?
It is commonly used as a ligand in organometallic chemistry, particularly in catalysis and the synthesis of metal complexes.
What is the chemical formula and molecular weight of 1,5-Cyclooctadiene?
The formula is C8H12 with a molecular weight of 108.18 g/mol.
How should 1,5-Cyclooctadiene be stored?
It should be stored at ambient temperature, away from light and air, to prevent oxidation.
What grade is available for 1,5-Cyclooctadiene?
Available in technical and high-purity grades; specific grades depend on application needs.
Can Molekula supply 1,5-Cyclooctadiene in bulk?
Yes, Molekula can supply 1,5-Cyclooctadiene in bulk quantities; please contact sales for details.
What documentation comes with an order of 1,5-Cyclooctadiene?
Each order includes a Certificate of Analysis and Safety Data Sheet (SDS) with the shipment.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.