Description

Sodium Dihydrogen Phosphate is a versatile inorganic salt widely used as a buffering agent, nutrient source, and sequestrant. Its primary value lies in its ability to precisely control pH and provide bioavailable phosphorus in critical industrial and biological processes. This compound is essential for manufacturers in the food, pharmaceutical, water treatment, and fertilizer industries seeking reliable and consistent chemical performance.

Application

• Food Industry: Used as an acidity regulator, emulsifying salt, and nutrient supplement in processed foods and beverages.
• Pharmaceuticals: Serves as an excipient in tablet formulations and as a buffering agent in various medicinal solutions and dialysis fluids.
• Water Treatment: Acts as a corrosion inhibitor and scale prevention agent in boiler water and cooling systems.
• Agriculture: Functions as a water-soluble phosphorus fertilizer and a component in nutrient solutions for hydroponics.
• Industrial Processes: Employed in metal surface treatment, electroplating baths, and as a flame retardant in certain materials.
• Laboratory & Research: A key component in the preparation of biological buffers (e.g., PBS - Phosphate Buffered Saline) for cell culture and molecular biology.
• Detergents & Cleaners: Used as a builder to soften water and enhance cleaning efficiency.

Basic Information

Product Name	Sodium Dihydrogen Phosphate
CAS No.	89140-32-9
Molecular Formula	NaH₂PO₄
Molecular Weight	119.98 g/mol
Synonyms	Monosodium Phosphate; Sodium Phosphate Monobasic; Primary Sodium Phosphate; NaH₂PO₄; MSP; Acid Sodium Phosphate; Sodium Dihydrogen Orthophosphate; Sodium Biphosphate
EINECS	Contact for details

Quality Control

Our Sodium Dihydrogen Phosphate is manufactured under a stringent quality management system. We offer various grades, including Food Grade (FCC), Pharmaceutical Grade (USP/EP), and Technical Grade, each meeting specific purity and safety standards. Every batch is accompanied by a comprehensive Certificate of Analysis (COA) detailing assay, impurity profiles, and physical specifications to ensure compliance with your application requirements.

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); keep the container tightly sealed to prevent caking and degradation due to absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	White crystalline powder or granules
Identification (IR)	Conforms
Assay (NaH₂PO₄)	≥ 98.0 %
pH (1% Solution)	4.1 - 4.5
Loss on Drying	≤ 2.0 %
Water Insoluble Matter	≤ 0.2 %
Heavy Metals (as Pb)	≤ 10 ppm
Arsenic (As)	≤ 3 ppm

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