How to Name a Hydrocarbon Chain Using the IUPAC Method
Know why the rules exist., Keep a list of prefixes on-hand., Practice.
Step-by-Step Guide
-
Step 1: Know why the rules exist.
The IUPAC rules were created to phase out old names (such as "toluene") and replace them with a system that would be consistent, as well as providing information about the placement of substituents (the atoms or molecules attached to a hydrocarbon chain). , These prefixes will help you name your hydrocarbons.
They're based on the number of carbons in the parent chain (not altogether).
For instance, CH3-CH3 would be ethane.
Your professor probably won't expect you to know prefixes above 10; take note if he or she does expect it. 1: meth- 2: eth- 3: prop- 4: but- 5: pent- 6: hex- 7: hept- 8: oct- 9: non- 10: dec- , Learning the IUPAC system takes practice.
Read through the following methods to see some examples, then find links to practice problems under Sources and Citations at the bottom of the page. -
Step 2: Keep a list of prefixes on-hand.
-
Step 3: Practice.
Detailed Guide
The IUPAC rules were created to phase out old names (such as "toluene") and replace them with a system that would be consistent, as well as providing information about the placement of substituents (the atoms or molecules attached to a hydrocarbon chain). , These prefixes will help you name your hydrocarbons.
They're based on the number of carbons in the parent chain (not altogether).
For instance, CH3-CH3 would be ethane.
Your professor probably won't expect you to know prefixes above 10; take note if he or she does expect it. 1: meth- 2: eth- 3: prop- 4: but- 5: pent- 6: hex- 7: hept- 8: oct- 9: non- 10: dec- , Learning the IUPAC system takes practice.
Read through the following methods to see some examples, then find links to practice problems under Sources and Citations at the bottom of the page.
About the Author
Jason Powell
Committed to making practical skills accessible and understandable for everyone.
Rate This Guide
How helpful was this guide? Click to rate: