1,3,5,7-Cyclooctatetraene

ChemicalBook > CAS DataBase List > 1,3,5,7-Cyclooctatetraene

1,3,5,7-Cyclooctatetraene

Product Name: 1,3,5,7-Cyclooctatetraene
CAS No.: 629-20-9
Chemical Name: 1,3,5,7-Cyclooctatetraene
Synonyms: COT;ESTF;C-COT;TPL-2;1,3,5,7-c;1,3,5,7-COT;[8]Annulene;Cot active mouse;CYCLOOCTATETRAENE;CycloctateTraene.
CBNumber: CB7164468
Molecular Formula: C8H8
Formula Weight: 104.15
MOL File: 629-20-9.mol

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1,3,5,7-Cyclooctatetraene Property

Melting point:: -5--3 °C (lit.)
Boiling point:: 142-143 °C (lit.)
Density: 0.925 g/mL at 25 °C (lit.)
refractive index: n20/D 1.537(lit.)
Flash point:: 72 °F
storage temp.: -20°C
solubility: Chloroform (Soluble), Methanol (Soluble)
form: Liquid
Specific Gravity: 0.943
color: Turbid yellow to yellow-brown
Water Solubility: Not miscible or difficult to mix in water.
Sensitive: Light Sensitive
BRN: 2496800
Dielectric constant: 2.46
Stability:: Stability Unstable - commercial product may be stabilized by the addition of a small amount of hydroquinone. May form explosive peroxides in storage. Do not distill to small volume. Readily forms explosive mixtures with air. Flammable. Incompatible with air, strong oxidizing agents.
LogP: 3.080
CAS DataBase Reference: 629-20-9(CAS DataBase Reference)
EPA Substance Registry System: 1,3,5,7-Cyclooctatetraene (629-20-9)

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Safety

Hazard Codes: Xn,Xi,T
Risk Statements: 10-36/37/38-65-61
Safety Statements: 26-62-45-53
RIDADR: UN 2358 3/PG 2
WGK Germany: 3
RTECS: GY0175600
F: 8-10
TSCA: Y
HazardClass: 3
PackingGroup: II
HS Code: 29021900

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Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H225Highly Flammable liquid and vapour

H304May be fatal if swallowed and enters airways

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P210Keep away from heat/sparks/open flames/hot surfaces. — No smoking.

P233Keep container tightly closed.

P301+P310IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician.

P303+P361+P353IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P331Do NOT induce vomiting.

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N-Bromosuccinimide Price

Sigma-Aldrich

Product number: SAB4500410
Product name: Anti-COT antibody produced in rabbit
Purity: affinity isolated antibody
Packaging: 100μG
Price: $506
Updated: 2024/03/01

Sigma-Aldrich

Product number: 138924
Product name: Cyclooctatetraene
Purity: 98%
Packaging: 1g
Price: $61.5
Updated: 2024/03/01

Sigma-Aldrich

Product number: 138924
Product name: Cyclooctatetraene
Purity: 98%
Packaging: 5g
Price: $198
Updated: 2024/03/01

TCI Chemical

Product number: C0505
Product name: 1,3,5,7-Cyclooctatetraene (stabilized with HQ)
Purity: >98.0%(GC)
Packaging: 1mL
Price: $64
Updated: 2024/03/01

TCI Chemical

Product number: C0505
Product name: 1,3,5,7-Cyclooctatetraene (stabilized with HQ)
Purity: >98.0%(GC)
Packaging: 5mL
Price: $188
Updated: 2024/03/01

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1,3,5,7-Cyclooctatetraene Chemical Properties,Usage,Production

Chemical Properties

1,3,5,7-Cyclooctatetraene (COT) is an unsaturated derivative of cyclooctane, with the formula C8H8. It is also known as [8]annulene. This polyunsaturated hydrocarbon is a colorless to light yellow flammable liquid at room temperature. Because of its stoichiometric relationship to benzene, COT has been the subject of much research and some controversy.

Physical properties

Cyclooctatetraene (COT) is a poster child for nonaromatic molecules. An isomer of tub-shaped COT, with one of the ring double bonds changed from the usual cis form to a trans one, lies some 23 kcal/mol higher in energy.
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.
Cyclooctatetraene is a nonaromatic 4n π-conjugated system with a non-planar tub-shaped geometry and potential energy surfaces at the ground state.

Uses

Used in the synthesis of highly organic film for silicon surfaces to improve its chemical and physical properties. 1 Used in liquid state organic dye lasers. 2 Used as triplet state quencher to reduce dye blinking. 3

Uses

1,3,5,7-Cyclooctatetraene is used in the synthesis of highly organic film for silicon surfaces to improve its chemical and physical properties. It is also used in liquid state organic dye lasers, as triplet state quencher to reduce dye blinking.

Uses

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.

Definition

ChEBI: An antiaromatic annulene that is cyclooctane having four double bonds at positions 1, 3, 5 and 7.

Synthesis Reference(s)

Tetrahedron Letters, 21, p. 4791, 1980 DOI: 10.1016/0040-4039(80)80141-9

General Description

A colorless liquid. May irritate skin and eyes. Less dense than water and insoluble in water. Flash point 70°F. Vapors heavier than air. Used to make rubber.

Air & Water Reactions

Highly flammable. Insoluble in water.

Reactivity Profile

1,3,5,7-CYCLOOCTATETRAENE may react vigorously with strong oxidizing agents. May react exothermically with reducing agents to release hydrogen gas.

Health Hazard

Inhalation or contact with material may irritate or burn skin and eyes. Fire may produce irritating, corrosive and/or toxic gases. Vapors may cause dizziness or suffocation. Runoff from fire control or dilution water may cause pollution.

Purification Methods

Purify the triene by shaking 3mL with 20mL of 10% aqueous AgNO3 for 15minutes, then filtering off the AgNO3 complex which precipitates. The precipitate is dissolved in water and added to cold concentrated ammonia to regenerate the cyclooctatetraene which is fractionally distilled under vacuum onto molecular sieves and stored at 0o. It is passed through a dry alumina column before use [Broadley et al. J Chem Soc, Dalton Trans 373 1986]. [Beilstein 5 I 228, 5 IV 1331.]

1,3,5,7-Cyclooctatetraene Preparation Products And Raw materials

Raw materials

NICKEL CYANIDE

Preparation Products

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View Lastest Price from 1,3,5,7-Cyclooctatetraene manufacturers

Henan Fengda Chemical Co., Ltd

Product: 1,3,5,7-Cyclooctatetraene 629-20-9
Price: US $100.00-1.00/KG
Min. Order: 1KG
Purity: 99%
Supply Ability: g-kg-tons, free sample is available
Release date: 2023-12-26

629-20-9, 1,3,5,7-CyclooctatetraeneRelated Search:

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[8]Annulene

1,3,5,7-CYCLOOCTATETRAENE

COT

CYCLOOCTATETRAENE

CYCLOOCTATETRAENE(1,3,5,7-)

1,3,5,7-COT

cyclooctatetraene stab.

CyclooctatetraeneCOTpaleyellowliq

1,3,5,7-Cyclooctatetraene,98%

1,3,5,7-Cyclooctatetraene, stabilized, 98%

Cyclooctatetraene,98%COT

CYCLOOCTATETRAENE COT

1,3,5,7-Cyclooctatetraene, 98%, stab. with 0.1% hydroquinone

1,3,5,7-Cyclooctatetraene - Stabilised with 0.1% Hydroquinone

1,3,5,7-Cyclooctatetraene (stabilized with HQ)

1,3,5,7-Cyclooctatetraene, 98%, stabilized

Cycloocta-1,3,5,7-tetraene

Cyclooctane-1,3,5,7-tetrene

1,3,5,7-c

(1Z,3Z,5Z,7Z)-Cycloocta-1,3,5,7-tetraene

1,3,5,7-Cyclooctatetraene, stabilized, 98% 2.5GR

1,3,5,7-Cyclooctatetraene, 98%, stab. with 200ppM IRGANOX|r 1076

1,3,5,7-Cyclooctatetraene&nbsp

carnitine O-octanoyltransferase

peroxisomal carnitine O-octanoyltransferase

Cot active mouse

C-COT

COT proto-oncogene serine/threonine-protein kinase

TPL-2

Tumor progression locus 2

Cancer Osaka thyroid oncogene

ESTF

Mitogen-activated protein kinase kinase kinase 8

Cyclooctatetraene 98%

1,3,5,7-Cyclooctatetraene, stabilized with 0.1% Hydroquinone

1,3,5,7-Cyclooctatetraene (stabilized with HQ)&gt

Human MAP3K8 Protein, GST Tag

1,3,5,7-CYCLOOCTATETRAENE ISO 9001：2015 REACH

Anti-Crot (C-terminal) antibody produced in goat

Anti-COT antibody produced in rabbit

Anti-MAP3K8, C-Terminal antibody produced in rabbit

ANTI-COT (MAP3K8/MEKK8)(C-TERMINAL) antibody produced in rabbit

CycloctateTraene.

629-20-9

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