Description

Sodiumphosphatemonobasicdihydrate CAS NO 13472-38-0 is a high-purity inorganic salt, specifically the dihydrate form of monosodium phosphate. This compound is a fundamental chemical building block valued for its buffering capacity and phosphorus content across diverse industrial and scientific processes. It is essential for manufacturers and researchers in the pharmaceutical, food & beverage, and water treatment industries seeking reliable, consistent-quality raw materials.

Application

• Pharmaceutical Buffer & Excipient: Used in the formulation of oral and parenteral drugs to maintain precise pH stability.
• Food Additive (FCC Grade): Functions as an acidity regulator, emulsifier, and nutrient source in processed foods and beverages.
• Water Treatment Agent: Acts as a corrosion inhibitor and sequestrant in boiler water and industrial cooling systems.
• Laboratory Reagent: Serves as a standard buffer component in analytical chemistry, molecular biology, and biochemical research.
• Nutrient Supplement: Provides a bioavailable source of phosphorus in animal feed and fertilizer blends.
• Industrial Process Chemical: Employed in metal surface treatment, textile processing, and ceramic manufacturing.

Basic Information

Product Name	Sodium Phosphate Monobasic Dihydrate
CAS No.	13472-38-0
Molecular Formula	NaH₂PO₄·2H₂O
Molecular Weight	156.01 g/mol
Synonyms	Monosodium phosphate dihydrate; Sodium dihydrogen phosphate dihydrate; Primary sodium phosphate; NaH₂PO₄·2H₂O; Phosphoric acid, monosodium salt, dihydrate; MSP Dihydrate; SAPP (when referring to specific grades); EINECS 231-449-2 (anhydrous basis)
EINECS	231-449-2 (for the anhydrous form)

Quality Control

Our Sodium Phosphate Monobasic Dihydrate is manufactured under a stringent quality management system. Production adheres to relevant specifications, including potential compliance with USP-NF, FCC, and ACS standards depending on the ordered grade. Every batch undergoes rigorous analytical testing to ensure identity, purity, and consistency. A comprehensive Certificate of Analysis (COA) is provided with each shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); the container must be kept tightly sealed after initial opening to prevent absorption of atmospheric moisture and caking.

Specification

Item	Specification
Appearance	White or almost white crystalline powder
Identification (IR)	Conforms
Assay (NaH₂PO₄·2H₂O)	98.0 - 102.0 %
pH (5% solution)	4.1 - 4.5
Loss on Drying	21.0 - 23.0 %
Insoluble Matter	≤ 0.05 %
Chloride (Cl)	≤ 0.005 %
Sulfate (SO₄)	≤ 0.01 %
Heavy Metals (as Pb)	≤ 10 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.