Tetrapotassium Pyrophosphate 96% (TKPP)

Tetrapotassium Pyrophosphate 96% (TKPP) (CAS 7320-34-5, molecular formula K4P2O7) is a process chemical for electronics and metal finishing, where trace metal content and particle contamination matter as much as headline assay. China Chemicals supplies it at 96% 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 TKPP, Potassium Pyrophosphate, Tetrapotassium Diphosphate. 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

Complexing agent in alkaline copper and zinc plating
Dispersant in clay, pigment and drilling slurries
Sequestrant in liquid detergent formulation
Buffer in electropolishing baths
Meat and seafood moisture retention at food grade

Technical specification

Chemical name	Tetrapotassium Pyrophosphate 96% (TKPP)
Synonyms	TKPP, Potassium Pyrophosphate, Tetrapotassium Diphosphate
CAS number	7320-34-5
Molecular formula	K4P2O7
Appearance	White granular powder, hygroscopic
Assay K4P2O7	96.0% min
P2O5 content	42.0% min
pH (1% solution)	10.0 – 10.7
Water insolubles	0.1% max
Heavy metals as Pb	10 ppm max
Loss on ignition	0.5% max

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.