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296-18-4

Cyclooctadecane, also known as 18-carbon cycloalkane, is a cyclic hydrocarbon compound consisting of 18 carbon atoms arranged in a closed loop, with each carbon atom bonded to two adjacent carbon atoms and two hydrogen atoms. It belongs to the class of cycloalkanes, which are saturated hydrocarbons with a cyclic structure. Cyclooctadecane is a colorless, odorless, and non-polar liquid with a high boiling point and low solubility in water. It is used in various applications, such as a solvent, a component in lubricants, and a precursor in the synthesis of other chemicals. Due to its large ring size, cyclooctadecane exhibits unique physical and chemical properties compared to smaller cycloalkanes, making it an interesting subject for research in organic chemistry.

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  • 296-18-4 Structure

  • Basic information

    1. Product Name: cyclooctadecane
    2. Synonyms: Cyclooctadecane
    3. CAS NO:296-18-4
    4. Molecular Formula: C18H36
    5. Molecular Weight: 252.4784
    6. EINECS: N/A
    7. Product Categories: N/A
    8. Mol File: 296-18-4.mol

  • Chemical Properties

    1. Melting Point: 72°C
    2. Boiling Point: 353.9°C at 760 mmHg
    3. Flash Point: 157.3°C
    4. Appearance: N/A
    5. Density: 0.79g/cm3
    6. Vapor Pressure: 7.07E-05mmHg at 25°C
    7. Refractive Index: 1.433
    8. Storage Temp.: N/A
    9. Solubility: N/A
    10. CAS DataBase Reference: cyclooctadecane(CAS DataBase Reference)
    11. NIST Chemistry Reference: cyclooctadecane(296-18-4)
    12. EPA Substance Registry System: cyclooctadecane(296-18-4)

  • Safety Data

    1. Hazard Codes: N/A
    2. Statements: N/A
    3. Safety Statements: N/A
    4. WGK Germany:
    5. RTECS:
    6. HazardClass: N/A
    7. PackingGroup: N/A
    8. Hazardous Substances Data: 296-18-4(Hazardous Substances Data)

296-18-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 296-18-4 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 2,9 and 6 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 296-18:
(5*2)+(4*9)+(3*6)+(2*1)+(1*8)=74
74 % 10 = 4
So 296-18-4 is a valid CAS Registry Number.

296-18-4SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 19, 2017

Revision Date: Aug 19, 2017

1.Identification

1.1 GHS Product identifier

Product name Cyclooctadecane

1.2 Other means of identification

Product number -
Other names -

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:296-18-4 SDS

296-18-4Downstream Products

296-18-4Relevant articles and documents

Flow Chemistry under Extreme Conditions: Synthesis of Macrocycles with Musklike Olfactoric Properties

Seemann, Alexandra,Panten, Johannes,Kirschning, Andreas

supporting information, p. 13924 - 13933 (2021/05/29)

Starting from small cyclic ketones, continuous flow synthesis is used to produce medium-sized rings and macrocycles that are relevant for the fragrance industry. Triperoxides are important intermediates in this process and are pyrolyzed at temperatures above 250 °C. The synthesis is carried out in two continuously operated flow reactors connected by a membrane-operated separator. The practicality of flow chemistry is impressively demonstrated in this work by the use of hazardous reagent mixtures (30% H2O2, 65% HNO3) and the pyrolysis of no less problematic peroxides. All new macrocycles were tested for their olfactory properties in relation to musk.

Cyclooctane metathesis catalyzed by silica-supported tungsten pentamethyl [(ΞSiO)W(Me)5]: Distribution of macrocyclic alkanes

Riache, Nassima,Callens, Emmanuel,Samantaray, Manoja K.,Kharbatia, Najeh M.,Atiqullah, Muhammad,Basset, Jean-Marie

supporting information, p. 15089 - 15094 (2015/02/19)

Metathesis of cyclic alkanes catalyzed by the new surface complex [(ΞSiO)W(Me)5] affords a wide distribution of cyclic and macrocyclic alkanes. The major products with the formula CnH2n are the result of either a ring contraction or ring expans

A Simple Synthesis of Macrocyclic Hydrocarbons by Metathesis of Cycloolefins

Warwel, Siegfried,Kaetker, Hans

, p. 935 - 937 (2007/10/02)

Metathesis of cycloolefins normally leads to unsaturated polymers.Using rheniumheptoxide on alumina, activated by tintetramethyl and working in dilution via soxhlet-similiar circulation system the metathesis reaction was directed to macrocyclic dienes, which are the dimers of the initial cyclolefins.Starting with C7-, C9- and C10-cycloolefins symmetric macrocyclic C14-, C18- and C20-dienes are obtained in yields of 58-74percent.The metathetic dimerization of cyclooctene leads to 1,9-cyclohexadecadiene in a yield of 30percent.By hydrogenation at room temperature and normalhydrogen-pressure all cyclodienes were converted quantitatively to cycloalkenes (catalyst: potassium on alumina) or to cycloalkanes (catalyst: palladium on carbon).

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