Sodium nitrate

Sodium nitrate (CAS 7631-99-4), also known as Chile saltpeter or E251, is an inorganic salt used across food preservation, agriculture, and industrial oxidation processes. It functions as a curing agent, fertilizer feedstock, and oxidizing agent depending on the application sector.

In food processing, E251 is used to cure processed meats such as bacon, ham, and deli products, inhibiting microbial growth and stabilizing color during shelf life. This ensures product safety and maintains visual appeal for consumers.

In agriculture, it serves as a fast-acting nitrogen source in straight and compound fertilizers, particularly for crops requiring rapid nutrient uptake. This allows for efficient growth cycles and improved yields in various soil conditions.

The mining industry uses sodium nitrate as an oxidizer component in blasting agents and explosive formulations where controlled reactivity is required. Its stability makes it a preferred choice for specialized industrial blasting applications.

In pulp and paper manufacturing, it supports chemical pulping processes and acts as an oxidizing agent in bleaching and delignification operations. This helps in achieving the desired brightness and strength in the final paper products.

Sodium nitrate is supplied as white crystalline granules or prills, with powder forms available for specific industrial applications. Food and feed-compliant material is available to E251 specification and FCC grade.

Technical grade is standard for agricultural and industrial supply, with purity levels typically at 99% or higher. This high level of purity ensures consistent performance across diverse manufacturing and chemical synthesis environments.