Nadsernokislyj Ammonij Gost (2025-2026)

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 requires high purity, often around 98-99.9%. nadsernokislyj ammonij gost

Typically ranges between 3.0 and 5.0 for a 5% or 50g/L solution. The standard is currently active and has been

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

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