Description

Sodium Tetrametaphosphate CAS NO 13396-41-3 is a high-purity, inorganic polyphosphate salt known for its superior sequestering and dispersing properties. This compound is critical for controlling water hardness and preventing scale formation in industrial processes. It is an essential additive for manufacturers in the detergent, water treatment, food processing, and textile industries seeking to improve product performance and process efficiency.

Application

• Water Treatment: Acts as a highly effective sequestrant and scale inhibitor in boiler and cooling water systems.
• Detergent & Cleaning Formulations: Used as a builder to enhance cleaning power by softening water and preventing redeposition of soil.
• Food Industry: Employed as a texturizer, emulsifying salt, and moisture-retaining agent in processed meats, seafood, and poultry products.
• Industrial Cleaning: Serves as a key component in metal cleaning and derusting formulations due to its chelating power.
• Ceramics & Textiles: Functions as a dispersing agent for clays in ceramic slips and as a detergent and sequestrant in textile processing.
• Oil Field Applications: Used in drilling muds and as a scale inhibitor to control mineral deposits.

Basic Information

Product Name	Sodium Tetrametaphosphate
CAS No.	13396-41-3
Molecular Formula	(NaPO3)4
Molecular Weight	469.86 g/mol
Synonyms	Sodium Tetrametaphosphate; Tetrasodium Metaphosphate; Graham's Salt; Sodium Polyphosphate, Glassy; Sodium Phosphate Glass; Kurrol's Salt (high molecular weight form); STMP; INS No. 452i; E452i
EINECS	236-541-3

Quality Control

Our Sodium Tetrametaphosphate is manufactured under a stringent quality management system. Each batch is tested to ensure it meets precise specifications for purity, composition, and performance. Certificates of Analysis (COA) documenting key parameters such as assay, phosphate content, and heavy metal limits are provided to guarantee consistent quality and compliance with relevant industry standards, including food-grade (FCC) specifications where applicable.

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) and must be kept in its original, sealed packaging until use to prevent caking and degradation.

Specification

Item	Specification
Appearance	White powder or granules
Identification (IR)	Conforms
Assay (as Na4P4O12)	≥ 95.0 %
pH (1% Solution)	5.5 - 7.5
Water Insoluble Matter	≤ 0.1 %
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.