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Dipotassium phosphate

CAS Number
7758-11-4
EC Number
231-834-5
Chemical Formula
H3O4P.2K
Molecular Weight
174.176 g/mol

Description

Dipotassium phosphate (CAS 7758-11-4 ), also known as potassium phosphate dibasic or DKP, is an inorganic potassium salt used across food, pharmaceutical, and industrial sectors. It functions primarily as a buffering agent, pH regulator, and sequestrant in formulations where precise acidity control and mineral stabilization are critical for the final product. In food and beverage manufacturing, DKP prevents protein precipitation and controls pH in dairy-based products, coffee creamers, and processed cheeses to ensure a consistent texture. Pharmaceutical formulators use it as a buffering component in parenteral solutions, culture media, and tablet formulations requiring stable pH profiles during the manufacturing process. Water treatment operations apply it to inhibit scale formation and sequester calcium and magnesium ions in distribution systems. It also serves as a nutrient source in fermentation media. This chemical supports microbial growth in industrial bioprocessing and yeast-based production. Dipotassium phosphate is supplied as a white crystalline powder or anhydrous granules. Recognized grades include food-grade ( FCC ), USP , and technical-grade, with food and pharma specifications being the most commonly traded materials in the global market. Buyers sourcing for regulated applications typically require certificates of analysis aligned to USP or FCC monograph standards to ensure compliance with safety and quality protocols. Contact us for supply of Dipotassium phosphate Request Quote

Other Names (Synonyms)

secondary potassium phosphate | potassium phosphate dibasic | potassium monophosphate | potassium monohydrogen phosphate | potassium hydrogen phosphate | potassium dibasic phosphate | phosphoric acid, dipotassium salt | K2HPO4 | DKP

Key Technical Features

  • High Purity Grade standard
  • Consistent Batch Quality
  • Full Regulatory & REACH Support
  • Global Logistics Network enabled

Physical Properties

Melting Point340 °C
Density2,44 g/cm 3
AppearanceWhite crystalline powder
ColorWhite
OdorOdorless
FormSolid
Water Solubility1600 g/L (20 ºC)
pH8.5-9.6 (25℃, 50mg/mL in H2O)
Log P-2.148 (est)

Safety & Handling

Danger
GHS05· CorrosiveGHS07· Irritant

Hazard Statements

H315Causes skin irritation
H318Causes serious eye damage

Precautionary Statements

P264Wash … thoroughly after handling.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P317Get emergency medical help.
P321Specific treatment (see … on this label).
P265Wash … thoroughly after handling.
P352IF ON SKIN: Wash with plenty of water.
P317Get emergency medical help.
P364Take off contaminated clothing and wash it before reuse.
P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Trade & Regulatory

HS Code28352400
Storage Class13 - Non Combustible Solids
WGK (Germany)3