Magnesium hydrogen phosphate

Magnesium hydrogen phosphate (CAS 7757-86-0), also known as dibasic magnesium phosphate or MDHP, is an inorganic salt used as a pH buffer and mineral source.

Where is Magnesium hydrogen phosphate used?

• Pharmaceutical manufacturing: tablet excipient and buffering agent
• Food: mineral additive and acidity regulator in fortified products, dietary supplements and processed foods
• Water treatment: adjusts pH and reduces corrosion by maintaining carbonate equilibrium
• Feed and agriculture: bioavailable magnesium and phosphorus supplement for livestock nutrition
• It stabilizes active ingredients sensitive to pH shifts.

Good to know: Controlled solubility and buffering capacity allow simultaneous pH stability and mineral fortification. Grades include food-grade (FCC), pharmaceutical-grade (USP/BP) and technical-grade.

Commercial specifications

• Trihydrate is the most commercially prevalent form
• Bulk supply typical for industrial and agricultural buyers; smaller packaging for pharmaceutical and food applications