Description

Sodium Dihydrogen Phosphate Dihydrate is a high-purity inorganic salt widely used as a buffering agent, nutrient, and sequestrant. Its consistent quality and reliable performance make it a critical raw material for industries requiring precise pH control and phosphorus supplementation. This product is essential for manufacturers in the food & beverage, pharmaceutical, water treatment, and fertilizer sectors.

Application

• Food & Beverage Industry: Used as an acidity regulator, emulsifying salt, and nutrient source in processed foods, beverages, and dairy products.
• Pharmaceutical Manufacturing: Serves as an excipient in tablet formulations and as a buffering agent in various medicinal solutions and electrolyte replenishers.
• Water Treatment: Acts as a corrosion inhibitor and scale prevention agent in boiler water and industrial cooling systems.
• Fertilizer & Agriculture: Provides a soluble source of phosphorus in fertilizer blends and nutrient solutions for hydroponics.
• Laboratory & Research: Employed in the preparation of biological buffers (e.g., PBS - Phosphate Buffered Saline) for biochemical and diagnostic applications.
• Industrial Processes: Functions as a dispersing agent, metal cleaner, and pH adjuster in textile processing, electroplating, and detergent formulations.

Basic Information

Product Name	Sodium Dihydrogen Phosphate Dihydrate
CAS No.	13472-35-0
Molecular Formula	NaH₂PO₄·2H₂O
Molecular Weight	156.01 g/mol
Synonyms	Monosodium Phosphate Dihydrate; Sodium Phosphate Monobasic Dihydrate; MSP; NaH₂PO₄·2H₂O; Primary Sodium Phosphate; Acid Sodium Phosphate; Sorensen's Sodium Phosphate; E339(i)
EINECS	231-449-2

Quality Control

Our Sodium Dihydrogen Phosphate Dihydrate is manufactured under a stringent quality management system. It can be produced to meet various pharmacopeial standards such as USP, EP, BP, and JP, as well as food-grade specifications like FCC. Every batch undergoes rigorous analytical testing to ensure identity, purity, and compliance. 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 material is hygroscopic (moisture-sensitive) and must be kept in original packaging or a suitable moisture-proof container to prevent caking and degradation.

Specification

Item	Specification
Appearance	White crystalline powder or granules
Identification (IR)	Conforms
Assay (NaH₂PO₄·2H₂O)	98.0 - 102.0 %
pH (5% solution)	4.1 - 4.5
Loss on Drying	21.0 - 24.0 %
Water Insoluble Matter	≤ 0.2 %
Chloride (Cl)	≤ 0.014 %
Sulfate (SO₄)	≤ 0.25 %
Heavy Metals (as Pb)	≤ 10 ppm
Arsenic (As)	≤ 3 ppm
Fluoride (F)	≤ 10 ppm

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