How Disodium Hydrogen Phosphate (DSP) Is Used in Water Treatment: Practical Application Guide

Disodium Hydrogen Phosphate (DSP) (磷酸氢二钠) is one of the most widely specified water plant auxiliary chemicals used across municipal and industrial facilities. As a DSP buffer, it delivers reliable performance in the scenarios our customers ask about most: Waste water treatment, food industry, pharmaceutical, agriculture, medical, environmental.

What Disodium Hydrogen Phosphate (DSP) Is and How It Works

Disodium Hydrogen Phosphate (DSP) is supplied as White crystal powder. Its molecular formula is Na2HPO4 (CAS 7558-79-4). Because of this physical form it dissolves and disperses predictably, which makes dosing and process control straightforward for plant operators.

Primary Applications

Its key application areas include: Waste water treatment, food industry, pharmaceutical, agriculture, medical, environmental. In practice this means DSP buffer is selected for both routine maintenance and shock-treatment programs, depending on the water matrix and treatment goal.

• Process reliability: stable active content and consistent granule/tablet size improve dosing accuracy.

• Compatibility: works within existing dosing and storage setups common to water plant auxiliary chemicals programs.

• Logistics: available in 25kg PE inner compound woven plastic bag, simplifying import and warehouse planning.

Why Buyers Choose This Grade

When specifying Disodium Hydrogen Phosphate (DSP), buyers typically compare active content, packaging and the applicable standard (GB 25568-2010). Selecting the right grade reduces consumption and protects downstream equipment.

Operators who also run complementary programs often pair this product with Monosodium Phosphate (MSP) to cover the full treatment chain from clarification to disinfection.

Get a Quote

We supply Disodium Hydrogen Phosphate (DSP) in full container and mixed-pallet quantities with COA and MSDS for every lot. View the Disodium Hydrogen Phosphate (DSP) product page for specifications, packaging options and lead times.