The primary standard for ammonium persulfate (nadsernokislyj ammonij) in the Russian Federation is . This standard specifies the technical requirements for the reagent, which is also known as ammonium peroxodisulfate. General Information Formula:

The standard is currently active and has been updated with several amendments (No. 1, 2, 3). Molecular Weight: Approximately 228.20 g/mol. Technical Specifications (GOST 20478-75)

Typically ranges between 3.0 and 5.0 for a 5% or 50g/L solution.

The standard limits the mass fractions of water-insoluble substances, residue after ignition, heavy metals, and manganese.

The quality of the reagent is categorized into different grades (e.g., "pure for analysis" or "ch.d.a.") with specific physicochemical requirements:

A white crystalline powder that is highly soluble in water.

Typically requires high purity, often around 98-99.9%.