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Cyclooctene

CAS No.
931-87-3
Chemical Name:
Cyclooctene
Synonyms
(Z)-cyclooctene;Cyclooctene;1-Cyclooctene;(Z)-Cycloocten;(1Z)-Cyclooctene;Cyclooctene ,95%;Cyclooctene, (Z)-;(Z)-1-Cyclooctene;Cyclooctene, (1Z)-;cis-Cyclooctene,94%
CBNumber:
CB7340240
Molecular Formula:
C8H14
Molecular Weight:
110.2
MDL Number:
MFCD00001753
MOL File:
931-87-3.mol
MSDS File:
SDS
TDS File:
TDS
Last updated:2026-09-12 18:54:55

Cyclooctene Properties

Melting point −16 °C(lit.)
Boiling point 32-34 °C12 mm Hg(lit.)
Density 0.848 g/mL at 20 °C(lit.)
vapor pressure 9.9hPa at 20℃
refractive index n20/D 1.470
Flash point 77 °F
storage temp. Flammables area
solubility H2O: insoluble
form Liquid
color Clear colorless to light brown
Viscosity 2.22mm2/s
Water Solubility Miscible with alcohol and ether. Immiscible with water.
Sensitive Air Sensitive
BRN 1280166
InChI 1S/C8H14/c1-2-4-6-8-7-5-3-1/h1-2H,3-8H2/b2-1-
InChIKey URYYVOIYTNXXBN-UPHRSURJSA-N
SMILES C1CCCC=CCC1
LogP 5 at 25℃
CAS DataBase Reference 931-87-3(CAS DataBase Reference)
FDA UNII AE340T3540
EPA Substance Registry System Cyclooctene, (1Z)- (931-87-3)
UNSPSC Code 12352100
NACRES NA.22

SAFETY

Risk and Safety Statements

Symbol(GHS)  Flame (GHS02)
GHS02
Signal word  Warning
Hazard statements  H226
Precautionary statements  P210-P233-P240-P241-P242-P243-P280-P303+P361+P353-P370+P378-P403+P235-P501
PPE Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter
Hazard Codes  Xn
Risk Statements  10-65
Safety Statements  29-33
RIDADR  UN 3295 3/PG 3
WGK Germany  3
TSCA  TSCA listed
HazardClass  3
PackingGroup  III
HS Code  29021990
Storage Class 3 - Flammable liquids
Hazard Classifications Flam. Liq. 3
REACH Registrations Active
NFPA 704
2
3 0

Cyclooctene price More Price(20)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 125482 cis-Cyclooctene contains 100-200 ppm Irganox 1076 FD as antioxidant, 95% 931-87-3 25ml $61.4 2026-04-30 Buy
Usbiological 267403 cis-Cyclooctene Asreported 931-87-3 100g $472 2026-06-03 Buy
Usbiological 267403 cis-Cyclooctene Asreported 931-87-3 250g $691 2026-06-03 Buy
Usbiological 267403 cis-Cyclooctene Asreported 931-87-3 500g $984 2026-06-03 Buy
Usbiological 267403 cis-Cyclooctene Asreported 931-87-3 1kg $1351 2026-06-03 Buy
Product number Packaging Price Buy
125482 25ml $61.4 Buy
267403 100g $472 Buy
267403 250g $691 Buy
267403 500g $984 Buy
267403 1kg $1351 Buy

Cyclooctene Chemical Properties,Uses,Production

Chemical Properties

clear colourless to light brown liquid

Uses

cis-Cyclooctene is used as a displaced ligand in chlorobis(cyclooctene)rhodium dimer and chlorobis(cyclooctene)iridium dimer in organometallic chemistry. It acts as a monomer used in synthetic chemistry. It is used to prepare 1-chloro-4-(trichloromethyl) cyclooctane by reaction with carbon tetrachloride using dichlorotris(triphenylphosphine) ruthenium(II) as a catalyst. Further, it is used to study the alkenes chemisorbed on silicon(100) by scanning tunneling microscopy.

Synthesis Reference(s)

Journal of the American Chemical Society, 102, p. 2693, 1980 DOI: 10.1021/ja00528a029
The Journal of Organic Chemistry, 40, p. 2555, 1975 DOI: 10.1021/jo00905a040
Tetrahedron Letters, 14, p. 2667, 1973

General Description

cis-Cyclooctene undergoes addition reaction with carbon tetrachloride catalyzed by dichlorotris(triphenylphosphine) ruthenium(II) to yield 1-chloro-4-(trichloromethyl) cyclooctane (1,4-adduct). It undergoes epoxidation catalyzed by molybdenum oxide nanoparticles incorporated in a mesoporous silica shell coated on dense silica-coated magnetite nanoparticles.

Purification Methods

The cis-isomer is freed from the trans-isomer by fractional distillation through a spinning-band column, followed by preparative gas chromatography on a Dowex 710-Chromosorb W GLC column. It is passed through a short alumina column immediately before use [Collman et al. J Am Chem Soc 108 2588 1986]. It has also been distilled in a dry N2 glove box from powdered fused NaOH through a Vigreux column (p 11), then passed through activated neutral alumina before use [Wong et al. J Am Chem Soc 109 4328 1987]. Alternatively it can be purified via the AgNO3 salt. This salt is obtained from crude cyclooctene (40 mL) by shaking at 70-80o with 50% w/w AgNO3 (2 x 15 mL) to remove cyclooctadienes (aqueous layer). Extraction is repeated at 40o (4 x 20 mL, of 50% AgNO3). Three layers are formed each time. The middle layer contains the AgNO3 adduct of cyclooctene which crystallises on cooling the layer to room temperature. The adduct (complex 2:1) is highly soluble in MeOH (at least 1g/mL) from which it crystallises in large flat needles when cooled at 0o. It is dried under slight vacuum for 1 week in the presence of CaCl2 and paraffin wax soaked in cyclooctene. It has m 51o and loses hydrocarbon on exposure to air. cis-Cyclooctene can be recovered by steam distillation of the salt, collected, dried (CaCl2) and distilled in vacuum. [Braude et al. J Chem Soc 4711 1957, AgNO3: Jones J Chem Soc 1808 1954, Cope & Estes J Am Chem Soc 72 1128 1950, Beilstein 5 I 35, 5 IV 263.] FLAMMABLE LIQUID.

3806-59-5
931-87-3
Synthesis of Cyclooctene from 1,3-Cyclooctadiene
Global( 82)Suppliers
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View Lastest Price from Cyclooctene manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
CYCLOOCTENE pictures 2026-09-02 CYCLOOCTENE
931-87-3
$1.00-100.00 1KG 99% Henan Fengda Chemical Co., Ltd
cis-Cyclooctene, stabilized   pictures 2020-01-08 cis-Cyclooctene, stabilized
931-87-3
$1.00 1KG 99% 20T Shaanxi Dideu Medichem Co. Ltd
  • CYCLOOCTENE pictures
  • CYCLOOCTENE
    931-87-3
  • $1.00-100.00
  • 99%
  • Henan Fengda Chemical Co., Ltd
cis-Cyclooctene contains 100-200 ppM Irganox 1076 FD as antioxidant, 95% (1Z)-Cyclooctene 1-Cyclooctene Cyclooctene, (Z)- cis-Cyclooctene, stabilized, 95% Cyclooctene, (1Z)- (Z)-Cycloocten cis-Cyclooctene, 95%, stab. cis-Cyclooctene,94% cis-Cyclooctene, Stabilized with 50 ppM of p-tert-Butylcatechol Cis-Cyclooctene, 95%, stabilized (Z)-1-Cyclooctene Cyclooctene ,95% Cyclooctene ,94% [stabilized] cis-Cyclooctene, stabilized, 95% 250ML CYCLOOCTENE ISO 9001:2015 REACH cis-Cyclooctene (Z)-cyclooctene Cyclooctene 931-87-3 Cyclic CO - CZ Organic Building Blocks Building Blocks Analytical Standards Analytical Chromatography Product Catalog Alkenes Alphabetic Alkenes Cyclic Organic Building Blocks