Potassium nitrate, 99% Cas 7757-79-1 - used to produce a durable blue/black finish typically seen on firearms. Its oxidizing quality, water solubility, and low cost make it an ideal short-term rust inhibitor.

Potassium nitrate, GR 99%+ Cas 7757-79-1 - used as an electrolyte in a salt bridge, and as thermal storage medium in power generation systems. It forms phase change material with silica and alumina nanoparticles. In combination with boron trifluoride it forms an efficient reagent for nitration of aromatic compounds. Adsorption on alumina provides an environmentally benign aromatic nitrating agent.

 Potassium nitrate, 99.995 %Cas 7757-79-1 - used as an electrolyte in a salt bridge, and as thermal storage medium in power generation systems. It forms phase change material with silica and alumina nanoparticles.

 Potassium nitrate, 99.999% Cas 7757-79-1 - used for niter bluing, which is less durable than other forms of protective oxidation, but allows for specific and often beautiful coloration of steel parts, such as screws, pins, and other small parts of firearms. Potassium nitrate, 99.999% Cas 7757-79-1 - used as an electrolyte in a salt bridge, and as thermal storage medium in power generation systems. It forms phase change material with silica and alumina nanoparticles.

Potassium nitrate, suitable for cell culture, suitable for plant cell culture Cas 7757-79-1 - used in CPW13M solution to extract the protoplasts from plant cells.