Cyclic hydrocarbons

Cyclic hydrocarbon, also known as closed-chain hydrocarbon, is the general term of hydrocarbons with cyclic structure. It refers to that a hydrocarbon has its inter-molecular carbons attached to each other to form a cyclic hydrocarbon. According to the structure and properties, it can be divided into alicyclic hydrocarbons and aromatic hydrocarbons. But general cyclic refers to alicyclic hydrocarbons. According to the number of cylinders, it can be further divided into monocyclic, bicyclic, tricyclic and other cyclic hydrocarbons.

Aromatic hydrocarbon refers to the closed-chain hydrocarbon containing a benzene ring or having the basic characteristics of the aromatic compound. It can be divided into mono-cyclic aromatic hydrocarbon, polycyclic aromatic hydrocarbon and non-benzene aromatic hydrocarbons. For monocyclic aromatic hydrocarbon, its molecule contains only one benzene ring, such as toluene, xylene, ethylbenzene, styrene, benzene and acetylene. Polycyclic aromatic hydrocarbon contains two or more benzene rings.
According to the interconnected ways of benzene ring, it can be divided into:
1. polybenzo-aliphatic hydrocarbons including diphenylmethane, triphenylmethane, stilbene, styrene and so on;
2. Biphenyl and polybenzene, such as biphenyl, terphenyl and tetraphenyl, etc;
3. polycyclic aromatic hydrocarbons such as naphthalene, anthracene, phenanthrene, indene, fluorene, acenaphthene, pyrene, coronene and so on;

Non-aromatic hydrocarbon is the hydrocarbon containing certain aromatic property but containing no benzene ring such as azulene and annulene. It is easy to have substitution reaction while being not easy to have addition reaction with the ring being not easy to be broken. It is mainly obtained through from the distillate of coal tar and the aromatization product of oil. It can be used as a solvent and chemical raw material.

Alicyclic hydrocarbon is a kind of closed chain hydrocarbon with property of aliphatic compound. It can be divided into saturated cycloalkanes and unsaturated cyclic olefins.

Cycloalkane is mainly presented in petroleum and is the component of petroleum products. The cycloalkanes contained in liquid fuels and solvents have small molecular weight with the molecular weight of it contained in the lubricant being large. In the production of chemical industry, they are also used as raw material and solvent. Cyclo-olefin is the byproduct of the petro-chemistry and coal chemistry to be used as a chemical raw material. The alicyclic hydrocarbon contained in a plant is called as terpenes (part of the terpene belongs to open chain hydrocarbons). The commonly used terpene mixture in industry is turpentine. This kind of compound is mostly flammable liquid, and its vapor in air at room temperature can reach explosive concentrations.

On toxicology, alicyclic hydrocarbon is similar to the corresponding open chain hydrocarbons. Generally speaking, alicyclic hydrocarbon belongs to anesthetic reagents and central nervous system depressants. The anesthesia effect upon inhalation of Cycloalkane is stronger than that upon inhalation of corresponding open-chain hydrocarbon. The anesthesia effect of the cyclic olefin can be enhanced with the increasing number of double bonds in the molecular structure. The acute toxicity of the cycloaliphatic is low and can be almost all discharged from the body, generally without the risk of causing chronic poisoning. Liquid alicyclic hydrocarbon has skin irritation with high concentrations of vapor being able to produce irritation. Cycloolefin has a larger irritation effect than naphthenes. Direct inhalation of liquid alicyclic hydrocarbons can cause pneumonia, pulmonary edema and pulmonary hemorrhage. No matter whether being inhaled or administrated orally or percutaneously into the body, it hasn’t been identified of the damaging effect of alicyclic hydrocarbons on the hematopoietic tissue.

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Structure Chemical Name CAS MF
Terpineol Terpineol 8000-41-7 C10H18O
1,2-DICHLOROHEXAFLUOROCYCLOPENTENE 1,2-DICHLOROHEXAFLUOROCYCLOPENTENE 706-79-6 C5Cl2F6
1-METHYL-1-CYCLOHEXENE 1-METHYL-1-CYCLOHEXENE 591-49-1 C7H12
1,2-DIMETHYLCYCLOHEXANE 1,2-DIMETHYLCYCLOHEXANE 583-57-3 C8H16
Dicyclopentadiene Dicyclopentadiene 77-73-6 C10H12
cis-Cyclooctene cis-Cyclooctene 931-88-4 C8H14
Cyclohexane Cyclohexane 110-82-7 C6H12
Cyclohexa-1,4-diene Cyclohexa-1,4-diene 628-41-1 C6H8
CYCLOPENTADIENYLTRIMETHYLSILANE CYCLOPENTADIENYLTRIMETHYLSILANE 3559-74-8 C8H14Si
(R)-Styrene oxide (R)-Styrene oxide 20780-53-4 C8H8O
1,2-EPOXYHEXANE 1,2-EPOXYHEXANE 1436-34-6 C6H12O
TRANS-1,2-DIBROMOCYCLOHEXANE TRANS-1,2-DIBROMOCYCLOHEXANE 7429-37-0 C6H10Br2
Hexafluoropropylene oxide Hexafluoropropylene oxide 428-59-1 C3F6O
Cyclohexene Cyclohexene 110-83-8 C6H10
1-Bromo-2,3-epoxypropane 1-Bromo-2,3-epoxypropane 3132-64-7 C3H5BrO
Methylcyclopentane Methylcyclopentane 96-37-7 C6H12
Octafluorocyclobutane Octafluorocyclobutane 115-25-3 C4F8
1,3-CYCLOOCTADIENE 1,3-CYCLOOCTADIENE 1700-10-3 C8H12
Trimethylboroxine Trimethylboroxine 823-96-1 C3H9B3O3
1,3,5-Tris[(3,3,3-trifluoropropyl)methyl]cyclotrisiloxane 1,3,5-Tris[(3,3,3-trifluoropropyl)methyl]cyclotrisiloxane 2374-14-3 C12H21F9O3Si3
N-(1-Cyclohexen-1-yl)morpholine N-(1-Cyclohexen-1-yl)morpholine 670-80-4 C10H17NO
DECACYCLENE DECACYCLENE 191-48-0 C36H18
Bromocyclohexane Bromocyclohexane 108-85-0 C6H11Br
5-NORBORNENE-2-OL 5-NORBORNENE-2-OL 13080-90-5 C7H10O
1,3-Butadiene diepoxide 1,3-Butadiene diepoxide 1464-53-5 C4H6O2
ETHYLENE SULFIDE ETHYLENE SULFIDE 420-12-2 C2H4S
(S)-(-)-Propylene oxide (S)-(-)-Propylene oxide 16088-62-3 C3H6O
Hexaphenylcyclotrisiloxane Hexaphenylcyclotrisiloxane 512-63-0 C36H30O3Si3
IODOCYCLOHEXANE IODOCYCLOHEXANE 626-62-0 C6H11I
Thiane Thiane 1613-51-0 C5H10S
Cyclopropyl carbinol Cyclopropyl carbinol 2516-33-8 C4H8O
ISOPROPYLCYCLOHEXANE ISOPROPYLCYCLOHEXANE 696-29-7 C9H18
CYCLODODECENE CYCLODODECENE 1501-82-2 C12H22
Cyclohexyldimethoxymethylsilane Cyclohexyldimethoxymethylsilane 17865-32-6 C9H20O2Si
(S)-Styrene oxide (S)-Styrene oxide 20780-54-5 C8H8O
1,2-Epoxydodecane 1,2-Epoxydodecane 2855-19-8 C12H24O
1,2-EPOXYHEXADECANE 1,2-EPOXYHEXADECANE 7320-37-8 C16H32O
2,2,4,4,6,6-Hexamethylcyclotrisilazane 2,2,4,4,6,6-Hexamethylcyclotrisilazane 1009-93-4 C6H21N3Si3
Cycloheptatriene Cycloheptatriene 544-25-2 C7H8
1,1,2-TRICHLORO-2,3,3-TRIFLUOROCYCLOBUTANE 1,1,2-TRICHLORO-2,3,3-TRIFLUOROCYCLOBUTANE 697-17-6 C4H2Cl3F3
Hexabromocyclododecane Hexabromocyclododecane 25637-99-4 C12H18Br6
1,2-Epoxyoctadecane 1,2-Epoxyoctadecane 7390-81-0 C18H36O
Chlorocyclohexane Chlorocyclohexane 542-18-7 C6H11Cl
5-Norbornene-2-methanol 5-Norbornene-2-methanol 95-12-5 C8H12O
1,2-EPOXYCYCLODODECANE 1,2-EPOXYCYCLODODECANE 286-99-7 C12H22O
1,2,3,4,5-PENTAPHENYL-1,3-CYCLOPENTADIENE 1,2,3,4,5-PENTAPHENYL-1,3-CYCLOPENTADIENE 2519-10-0 C35H26
1-Cyclohexylethan-1-one 1-Cyclohexylethan-1-one 823-76-7 C8H14O
Bromomethylcyclopentane Bromomethylcyclopentane 3814-30-0 C6H11Br
3-BROMOCYCLOHEXENE 3-BROMOCYCLOHEXENE 1521-51-3 C6H9Br
ALLYLCYCLOHEXANE ALLYLCYCLOHEXANE 2114-42-3 C9H16
Azetidine Azetidine 503-29-7 C3H7N
CYCLOOCTENE OXIDE CYCLOOCTENE OXIDE 286-62-4 C8H14O
1-Pyrrolidino-1-cyclohexene 1-Pyrrolidino-1-cyclohexene 1125-99-1 C10H17N
1,2-EPOXYBUTANE 1,2-EPOXYBUTANE 106-88-7 C4H8O
BICYCLOHEXYL BICYCLOHEXYL 92-51-3 C12H22
ALPHA-TERPINENE ALPHA-TERPINENE 99-86-5 C10H16
(Bromomethyl)cyclobutane (Bromomethyl)cyclobutane 17247-58-4 C5H9Br
Tetrahydrocyclopentadiene Tetrahydrocyclopentadiene 2825-82-3 C10H16
(R)-(+)-Propylene oxide (R)-(+)-Propylene oxide 15448-47-2 C3H6O
CYCLOHEPTYL BROMIDE CYCLOHEPTYL BROMIDE 2404-35-5 C7H13Br
DODECAMETHYLCYCLOHEXASILOXANE DODECAMETHYLCYCLOHEXASILOXANE 540-97-6 C12H36O6Si6
2-Butene oxide 2-Butene oxide 3266-23-7 C4H8O
1-Phenyl-1-cyclohexene 1-Phenyl-1-cyclohexene 771-98-2 C12H14
Trimethoxyboroxine Trimethoxyboroxine 102-24-9 C3H9B3O6
1,3,5,7-CYCLOOCTATETRAENE 1,3,5,7-CYCLOOCTATETRAENE 629-20-9 C8H8
CYCLOHEPTENE CYCLOHEPTENE 628-92-2 C7H12
CYCLOHEPTANE CYCLOHEPTANE 291-64-5 C7H14
CYCLOOCTENE CYCLOOCTENE 931-87-3 C8H14
1,2,5,6,9,10-Hexabromocyclododecane 1,2,5,6,9,10-Hexabromocyclododecane 3194-55-6 C12H18Br6
1,2-Dibromocyclopentene 1,2-Dibromocyclopentene 75415-78-0 C5H6Br2
2,5-Norbornadiene 2,5-Norbornadiene 121-46-0 C7H8
Cyclopentyl chloride Cyclopentyl chloride 930-28-9 C5H9Cl
Octaphenylcyclotetrasiloxane Octaphenylcyclotetrasiloxane 546-56-5 C48H40O4Si4
CYCLOHEXYL ISOCYANIDE CYCLOHEXYL ISOCYANIDE 931-53-3 C7H11N
Benzocyclobutene Benzocyclobutene 694-87-1 C8H8
Methylcyclohexane Methylcyclohexane 108-87-2 C7H14
1,5-Cyclooctadiene 1,5-Cyclooctadiene 111-78-4 C8H12
Cyclooctane Cyclooctane 292-64-8 C8H16
(S)-(+)-Epichlorohydrin (S)-(+)-Epichlorohydrin 67843-74-7 C3H5ClO
1-Methylcyclopentene 1-Methylcyclopentene 693-89-0 C6H10
(Bromomethyl)cyclopropane (Bromomethyl)cyclopropane 7051-34-5 C4H7Br
1,2,3,4-TETRAPHENYL-1,3-CYCLOPENTADIENE 1,2,3,4-TETRAPHENYL-1,3-CYCLOPENTADIENE 15570-45-3 C29H22
Cyclopentene oxide Cyclopentene oxide 285-67-6 C5H8O
2-(Chloromethyl)-2-methyloxirane 2-(Chloromethyl)-2-methyloxirane 598-09-4 C4H7ClO
1,2,3,4,5-Pentamethylcyclopentadiene 1,2,3,4,5-Pentamethylcyclopentadiene 4045-44-7 C10H16
1,2-Diaminocyclohexane 1,2-Diaminocyclohexane 694-83-7 C6H14N2
Cyclohexylmethyl bromide Cyclohexylmethyl bromide 2550-36-9 C7H13Br
VINYLCYCLOHEXANE VINYLCYCLOHEXANE 695-12-5 C8H14
Cyclopropyl bromide Cyclopropyl bromide 4333-56-6 C3H5Br
Bromocyclopentane Bromocyclopentane 137-43-9 C5H9Br
1,2-Epoxyoctane 1,2-Epoxyoctane 2984-50-1 C8H16O
Hexamethylcyclotrisiloxane Hexamethylcyclotrisiloxane 541-05-9 C6H18O3Si3
Cyclohexene oxide Cyclohexene oxide 286-20-4 C6H10O
OCTAMETHYLCYCLOTETRASILAZANE OCTAMETHYLCYCLOTETRASILAZANE 1020-84-4 C8H28N4Si4
Decamethylcyclopentasiloxane Decamethylcyclopentasiloxane 541-02-6 C10H30O5Si5
Ethylcyclohexane Ethylcyclohexane 1678-91-7 C8H16
(R)-(-)-Epichlorohydrin (R)-(-)-Epichlorohydrin 51594-55-9 C3H5ClO
PERFLUORO(METHYLCYCLOHEXANE) PERFLUORO(METHYLCYCLOHEXANE) 355-02-2 C7F14
Isobutylene oxide Isobutylene oxide 558-30-5 C4H8O
1,2-EPOXY-9-DECENE 1,2-EPOXY-9-DECENE 85721-25-1 C10H18O
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