Potassium+hydrogen+phthalate

Often called KHP, an acidic salt compound which forms white powder, colorless crystals, a colorless solution, and an ionic solid. The hydrogen is acidic and is often used as a primary solution for acid base titrations because it is solid and air stable. KHP can be used as a buffering agent in combination with hydrochloric acid or sodium hydroxide. It is also a useful standard for total organic carbon testing. This chemical is very rare but does appear in certain products. Molecular Formula: C8H5KO4. Molar Mass: 204.22 g mol.