System to describe the chemical formulas for WEB.
Attention! The site in the process of rebranding.
The old name easyChem was too common. New name: CharChem.
The site is already available via the new domain, which soon will become the main. However, the old domain will also be available.

Chemical reactions' reference

Search chemical reactions.
Reaction equation:
Enter a description for the reaction search
  • Description of the reaction consists of formulas. Instead of formulas, you can enter the names of the reactants.
  • Reagents should be separated by characters: + = -> <=>
  • Description reagent necessarily be separated from these signs space.
  • If you enter the formula, take the case of letters when specifying elements. For example, Co - cobalt, CO - carbon monoxide, co - an erroneous entry.
  • To describe the use of the ion charge record: H^+, OH^-, Ca^++, SO4^2-
  • Coefficients need not be specified.
  • Detailed description of easyChem rules : linear, structural.


  • Zn + HNO3 =
  • = acetone
  • H2O <=> H2