Enter the atom counts for a compound with formula CcHhClclNnNanaOoPpSs.
The calculator returns ThOD values with and without nitrification, along with the molecular weight used in the calculation.
THOD Calculator
Formula Inputs
Use whole-number atom counts. Leave a field at 0 if
that element is not present in the molecule.
Reference: OECD (1992), Test No. 301: Ready Biodegradability,
OECD Guidelines for the Testing of Chemicals, Section 3.
Understanding the calculation
Two theoretical oxygen demand calculations are performed, using the following formulas for a compound with formula CcHhClclNnNanaOoPpSs where MW = molecular weight:
ThOD without nitrification
ThOD with nitrification
Reference
OECD (1992), Test No. 301: Ready Biodegradability, OECD Guidelines for the Testing of Chemicals, Section 3, OECD Publishing
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