Product Short Description: HUMIC ACID Product Description: Humic acids are the organic substances that coagulate when the strong-base extract is acidified while fulvic acids are the organic substances that remain soluble when the strong-base extract is acidified.Humic substances are organic compounds that are important components of humus, the major organic fraction of soil, peat, and coal.Humic acid is a chemical produced by decaying plants. People use it to make medicine.