Sodium Dihydrogen Phosphate (MSP)

White granular material in a shallow round dish in an MSP product photo

Phosphate Related Products

Product
Sodium Dihydrogen Phosphate (MSP)

Overview

Sodium dihydrogen phosphate (MSP) is a white crystalline powder that dissolves readily in water to give a slightly acidic solution. It is used as a buffering agent and as a raw material for other sodium phosphates.

Also known as

MSP; Monosodium phosphate; Sodium phosphate monobasic

CAS number

7558-80-7 (anhydrous)

Molecular formula

NaH2PO4

Molecular weight

119.98

Specifications

Test itemsSpecifications
AppearanceWhite crystalline powder
Content (as NaH2PO4) /%≥98.0
Sulfate (as SO4) /%≤0.7
As content /%≤0.005
F content /%≤0.001
pH (50 g/L, 25℃)4.2-4.6
Water insoluble matter /%≤0.01

Applications

  • Buffering and pH adjustment
  • Raw material for sodium acid pyrophosphate and sodium metaphosphates
  • Water treatment and boiler cleaning
  • Electroplating and leather processing

Packaging

25 kg/bag (PE-lined); 1000 kg/jumbo bag.

Storage

Store in a dry, ventilated warehouse with the bags kept sealed, as the product absorbs moisture from the air.

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