C8H8
56 compounds have this formula on CompoundList.
- Molar mass
- 104.15g/mol
- Monoisotopic mass
- 112.1128Da
- Atoms
- 16
- Elements
- 2
- Rings plus double bonds
- 5
The formula C8H8 describes a molecule made of 8 carbon atoms and 8 hydrogen atoms. It is written in Hill notation: carbon first, then hydrogen, then the other elements in alphabetical order. The formula tells you which atoms are present, not how they are connected, which is why several different chemicals can share it.
Elemental composition
- C Carbon × 892.26%12.011 × 8 = 96.088 g/mol
- H Hydrogen × 87.74%1.008 × 8 = 8.064 g/mol
Compounds with the formula C8H8
Isomers we list, best known first. Open one to see its structure, properties, safety data and suppliers.
Showing 1 to 56 of 56 compounds
![Pentacyclo[3.3.0.02,4.03,7.06,8]octane chemical structure, C8H8, CAS 20656-23-9](/s/YIJMEXRVJPVGIY-UHFFFAOYSA-N.svg)
- 7-Methylene-1,3,5-cycloheptatriene539-79-7C8H8
- 1,2-Dihydropentalene30294-54-3C8H8
- Cyclopropa(cd)pentalene, 2a,2b,4a,4b-tetrahydro-6909-37-1C8H8
- Tetracyclo(3.2.0.02,7.04,6)heptane, 3-methylene-38898-42-9C8H8
- 1-Cyclopropylpenta-1,3-diyne116316-76-8C8H8
- Cyclobutane, tetrakis(methylene)-3227-91-6C8H8
- 1,3,7-Octatrien-5-yne16607-77-5C8H8
- 1,5-Dihydropentalene33284-11-6C8H8
- Tricyclo(4.1.1.07,8)octa-2,4-diene35438-35-8C8H8
- 1,6a-Dihydropentalene61771-83-3C8H8
- 2,3-Dimethylcyclohexa-1,3-dien-5-yne62956-72-3C8H8
- 1,4-Dimethylcyclohexa-1,3-dien-5-yne59309-68-1C8H8
- 1,6-Dihydropentalene89654-25-1C8H8
- Octa-1,3,5-trien-7-yne20023-57-8C8H8
- 1,2,3,4,5-Pentadeuterio-6-(1-deuterioethenyl)benzene217501-55-8C8H8
- 1-Ethenyl-5-methylidenecyclopenta-1,3-diene108593-21-1C8H8
- Acetylene--benzene (1/1)264146-43-2C8H8
- (1R,6S)-Bicyclo(4.2.0)octa-2,4,7-triene78817-03-5C8H8
- Cyclopropane, 1-ethynyl-1-(1-propynyl-105961-79-3C8H8
- (1R,2S)-1,2-Diethynylcyclobutane53356-63-1C8H8
- 1,4-Dihydropentalene61771-84-4C8H8
- Cycloocta-1,3-dien-6-yne80339-91-9C8H8
- Oct-2-ene-4,6-diyne22644-47-9C8H8
- 1-(Buta-1,3-dien-1-yl)cyclobuta-1,3-diene117868-89-0C8H8
- 1,3-Diethenylidenecyclobutane67496-45-1C8H8
- 5-Methylcyclohepta-1,2,4,6-tetraene93001-01-5C8H8
- Oct-4-ene-1,7-diyne100758-27-8C8H8
- Octa-3,5,6-trien-1-yne123150-67-4C8H8
- 5-Methylbicyclo[4.1.0]hepta-2,4,6-triene420848-33-5C8H8
- 5-Ethenylidene-2-methylcyclopenta-1,3-diene63819-95-4C8H8
- 3,4,5-Trimethylidenecyclopent-1-ene53477-08-0C8H8
- Cycloocta-1,5-dien-3-yne68344-46-7C8H8
Frequently asked questions
What is the molar mass of C8H8?
The molar mass of C8H8 is 104.15 g/mol, calculated from standard atomic weights for 8 carbon atoms and 8 hydrogen atoms. The monoisotopic mass is 112.1128 Da.
How many compounds have the formula C8H8?
CompoundList lists 56 compounds with the molecular formula C8H8, including Styrene, Benzocyclobutene, Cubane. Compounds that share a formula are isomers. They contain the same atoms arranged differently, so their properties, uses and prices can be very different.
What is the degree of unsaturation of C8H8?
C8H8 has a degree of unsaturation of 5. That is the total number of rings and pi bonds (a double bond counts as one, a triple bond as two) in any structure with this formula.