Phosphoric acid 70%, technically pure, is a versatile solution used in various applications, including life sciences, histology, medical diagnostics and materials science. It is used to etch silicon nitride and as a wet etchant in the processing of compound semiconductors. In electrochemistry, it is used as an electrolyte in electropolishing copper. It is also used to treat iron and steel, for example as a rust converter, to passivate iron and zinc, and in materialography as a laboratory chemical.

The high purity and concentration of the technically pure phosphoric acid solution allows precise control of acid concentration in various applications. It is particularly useful for adjusting pH levels in biological systems and in the preparation of buffer solutions.

Chemically, phosphoric acid is a trivalent acid (H3PO4) with strong acidic properties. It is completely miscible in water and can be produced in different concentrations to meet the requirements of various applications. Phosphoric acid effectively affects pH through its ability to donate protons to solvents and other molecules.

In addition to the above applications, phosphoric acid is also used in histology to decalcify tissue specimens, using appropriate dilutions. Overall, phosphoric acid 70%, technically pure, is a powerful and versatile tool for numerous applications in various scientific and technical fields.