Disodium Phosphate Anhydrous 98% (E339)

Disodium Phosphate Anhydrous 98% (E339) (CAS 7558-79-4, molecular formula Na2HPO4) is a food-grade ingredient supplied to a published specification for food, beverage and nutrition manufacture, with traceability from batch through to certificate. China Chemicals supplies it at 98% min in pack sizes from 1 kg through to 1000 kg Bulk Bag, so laboratory trial quantities and full production volumes can be sourced from the same specification.

It is also traded as E339, DSP, Sodium Hydrogen Phosphate, Disodium Orthophosphate. Every consignment ships with a batch-specific Certificate of Analysis and the current Safety Data Sheet, and material is stored and picked under stock rotation so you receive product well inside its shelf life.

Typical applications

Emulsifying salt in processed cheese and dairy
Buffer and pH stabiliser in evaporated milk
Anticaking and free-flow agent in powdered products
Boiler water treatment and scale control
Detergent builder and water conditioner

Technical specification

Chemical name	Disodium Phosphate Anhydrous 98% (E339)
Synonyms	E339, DSP, Sodium Hydrogen Phosphate, Disodium Orthophosphate
CAS number	7558-79-4
Molecular formula	Na2HPO4
Appearance	White free-flowing powder
Assay Na2HPO4	98.0% min
pH (1% solution)	8.9 – 9.2
Loss on ignition	5.0% max
Water insolubles	0.2% max
Fluoride	10 ppm max
Standard	FCC / E339 compliant

Values above are typical and are confirmed on the Certificate of Analysis issued against each batch. Tighter specifications can be quoted where a process requires them.

Packaging and supply

Available in 1 kg, 5 kg, 25 kg Bag, 1000 kg Bulk Bag. Bulk, road tanker and export drum quantities are quoted on request, including FOB and CIF terms for international shipment. Pricing shown is per pack in USD, exclusive of freight and any applicable duties.

Handling and safety

Transport classification: Not regulated · Causes eye irritation. Store in the original closed container in a cool, well-ventilated area away from incompatible materials, and handle using appropriate personal protective equipment. Read the Safety Data Sheet in full before use — it is issued with every order and is available on request before purchase.

Supply to industry only. Products are sold for legitimate industrial, laboratory and manufacturing use. We may request end-use details and business registration before releasing an order.