Description

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

Application

• Pharmaceutical Manufacturing: Used as an excipient in tablet formulations, a buffering agent in parenteral solutions, and a source of phosphorus in nutritional supplements.
• Food & Beverage Industry: Functions as an emulsifier, pH regulator, and mineral fortifier in processed foods, dairy products, and beverages (FCC grade applicable).
• Water Treatment: Acts as a corrosion inhibitor and scale control agent in boiler water and industrial cooling systems.
• Laboratory & Research: Serves as a key component in buffer solutions for molecular biology, biochemistry, and analytical chemistry applications.
• Industrial Processes: Employed in metal surface treatment, textile processing, and ceramic manufacturing.
• Detergent & Cleaning Formulations: Used as a builder to enhance cleaning efficiency by sequestering water hardness ions.

Basic Information

Product Name	Sodium Phosphate Dibasic Dodecahydrate
CAS No.	10039-32-4
Molecular Formula	Na2HPO4 · 12H2O
Molecular Weight	358.14 g/mol
Synonyms	Disodium hydrogen phosphate dodecahydrate; Dibasic sodium phosphate dodecahydrate; DSP-12; Sodium phosphate, dibasic, dodecahydrate; sec-Sodium phosphate dodecahydrate; Disodium phosphate dodecahydrate; Na2HPO4.12H2O; E339(ii)
EINECS	231-448-7

Quality Control

Our Sodium Phosphate Dibasic Dodecahydrate is manufactured under a stringent quality management system. We offer grades compliant with various pharmacopeial standards including USP-NF, EP, and BP, as well as FCC for food applications. Every batch is accompanied by a comprehensive Certificate of Analysis (COA) to ensure traceability and compliance with your specifications.

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); the container must be kept tightly sealed to prevent absorption of atmospheric moisture and caking.

Specification

Item	Specification
Appearance	White or almost white crystalline powder
Identification (IR)	Conforms
Assay (Na2HPO4·12H2O)	98.0 - 102.0 %
pH (5% solution)	8.5 - 9.5
Loss on Drying	55.0 - 62.0 %
Chloride (Cl)	≤ 0.005 %
Sulfate (SO4)	≤ 0.01 %
Arsenic (As)	≤ 3 ppm
Heavy Metals (as Pb)	≤ 10 ppm

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