Cyclooctatetraene
ALDRICH/138924 - 98%
Synonym: [8]Annulene
CAS Number: 629-20-9
Empirical Formula (Hill Notation): C8H8
Molecular Weight: 104.15
MDL Number: MFCD00004161
Linear Formula: C8H8
Product Type: Chemical
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material. This image depicts SKU: 138924-5G
| assay | 98% |
| bp | 142-143 °C (lit.) |
| contains | 0.1% hydroquinone as inhibitor |
| density | 0.925 g/mL at 25 °C (lit.) |
| form | liquid |
| InChI | 1S/C8H8/c1-2-4-6-8-7-5-3- |
| InChI key | KDUIUFJBNGTBMD-BONZMOEMSA |
| mp | −5-−3 °C (lit.) |
| Quality Level | 100  |
| refractive index | n |
| SMILES string | C1=CC=CC=CC=C1 |
| storage temp. | −20°C |
| Application: | • Used in the synthesis of highly organic film for silicon surfaces to improve its chemical and physical properties. • Used in liquid state organic dye lasers. • Used as triplet state quencher to reduce dye blinking. |
| Application: | COT may be functionalized by two side groups which can be used as active anode materials for rechargeable batteries. High capacity and voltage organic cathodes may be developed by using COT that can be fused with carbon molecules. |
| General description: | Cyclooctatetraene (COT) is a nonaromatic 4n π-conjugated system with a non-planar tub-shaped geometry and potential energy surfaces at the ground state. |
| General description: | Cyclooctatetraene is an 8p electron system and has a triplet ground state if the p electrons are delocalized. It is antiaromatic hence highly unstable and reactive. It adopts a non-planar boat conformation to attain stability with alternating single and double bonds and hence behaves like a polyolefin. |
| Packaging: | 1, 5 g in glass bottle |
| Symbol |    GHS02,GHS07,GHS08 |
| Signal word | Danger |
| Hazard statements | H225 - H304 - H315 - H319 - H335 |
| Precautionary statements | P210 - P233 - P301 + P310 - P303 + P361 + P353 - P305 + P351 + P338 - P331 |
| Hazard Codes | Xn |
| Risk Statements | 10-36/37/38-65 |
| Safety Statements | 26-62 |
| RIDADR | UN 2358 3 / PGII |
| WGK Germany | WGK 3 |
| Flash Point(F) | 71.6 °F - closed cup |
| Flash Point(C) | 22 °C - closed cup |
| Purity | 98% |
| bp | 142-143 °C (lit.) |
| mp | −5-−3 °C (lit.) |
| Density | 0.925 g/mL at 25 °C (lit.) |
| Refractive Index | n |
| Storage Temp. | −20°C |
| UNSPSC | 12352103 |