Description

Trisodium Hydrogen Diphosphate is a high-purity inorganic phosphate salt, also known as sodium acid pyrophosphate. This compound serves as a critical functional ingredient, primarily valued for its buffering, sequestering, and leavening properties. It is essential for manufacturers in the food processing, water treatment, and industrial cleaning sectors who require reliable and consistent chemical performance.

Application

• Food Industry: Acts as a leavening agent in baked goods, a buffering agent to control pH in processed foods, and a sequestrant in meat and seafood products.
• Water Treatment: Used as a corrosion inhibitor and scale control agent in boiler water and cooling tower systems.
• Industrial Cleaning: Functions as a builder in detergent formulations, enhancing cleaning efficiency by sequestering metal ions.
• Metal Treatment: Employed in surface treatment and electroplating baths for metal cleaning and finishing processes.
• Oil & Gas: Utilized as a clay stabilizer and fluid loss additive in drilling mud formulations.
• Ceramics & Textiles: Serves as a dispersant and processing aid in ceramic glazes and textile dyeing operations.

Basic Information

Product Name	Trisodium Hydrogen Diphosphate
CAS No.	14691-80-6
Molecular Formula	Na3HP2O7
Molecular Weight	243.94 g/mol
Synonyms	Sodium Acid Pyrophosphate (SAPP); Trisodium Dihydrogen Diphosphate; Disodium Dihydrogen Pyrophosphate, Trisodium Salt; Tetrasodium Pyrophosphate, Acid Form; E 450(iii); INS 450(iii); Food Grade SAPP; TSPP (Acid); Na3HP2O7
EINECS	238-735-6

Quality Control

Our Trisodium Hydrogen Diphosphate is manufactured under a stringent quality management system. We provide material that meets relevant food grade (FCC) and industrial specifications, ensuring batch-to-batch consistency. Certificates of Analysis (COA) documenting purity, assay, and impurity profiles are available for every shipment upon request.

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 after initial opening to prevent caking and degradation due to moisture absorption.

Specification

Item	Specification
Appearance	White crystalline powder or granules
Identification (IR)	Conforms
Assay (as Na3HP2O7)	≥ 95.0 %
pH (1% Solution)	3.5 - 4.5
Water Insoluble Matter	≤ 1.0 %
Loss on Drying	≤ 0.5 %
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.