Description

Pentaphosphoric Acid, Sodium Salt is an inorganic polyphosphate compound with the CAS number 18859-55-7. This specialty chemical serves as a versatile source of condensed phosphate ions, offering superior sequestering and dispersing properties compared to simpler phosphates. It is essential for industries requiring advanced water treatment, metal surface conditioning, and specialized detergent formulations where high-performance phosphate chemistry is critical.

Application

• Water Treatment: Acts as a high-efficiency scale and corrosion inhibitor in industrial cooling and boiler water systems.
• Detergent & Cleaning Formulations: Used as a builder and sequestrant in industrial and institutional cleaning products to enhance cleaning power and control water hardness.
• Metal Surface Treatment: Employed in metal finishing and pretreatment processes for surface cleaning, phosphating, and rust inhibition.
• Ceramic & Glass Industry: Functions as a dispersing agent and electrolyte in slips and glazes to control viscosity and improve processing.
• Oilfield Chemicals: Utilized as a scale inhibitor in drilling and production fluids to prevent mineral deposition.
• Textile Processing: Serves as a dispersant and sequestrant in scouring, bleaching, and dyeing operations.
• Food Processing (Technical Grade): May be used in equipment cleaning formulations and as a water treatment agent in food processing plants.
• Laboratory Research: Used as a reagent and standard in analytical chemistry and materials science research.

Basic Information

Product Name	Pentaphosphoric Acid, Sodium Salt
CAS No.	18859-55-7
Molecular Formula	NaH4P5O16 (common form) / Variable
Molecular Weight	~469.86 g/mol (for NaH4P5O16)
Synonyms	Sodium Pentaphosphate; Pentasodium Triphosphate (common misnomer); Sodium Polyphosphate (type); Graham's Salt (related); Condensed Sodium Phosphate; Sodium Tetrapolyphosphate; Sodium Tripolyphosphate, Hexahydrate (related compound); SHMP (Sodium Hexametaphosphate, related)
EINECS	242-645-8

Quality Control

Our Pentaphosphoric Acid, Sodium Salt is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise chemical and physical specifications, including assay (P2O5 content), pH, solubility, and heavy metal limits. Certificates of Analysis (COA) documenting purity and compliance are available for all shipments. We can supply grades suitable for industrial and technical applications, with consistency guaranteed from batch to batch.

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). Keep the container tightly sealed when not in use to prevent absorption of atmospheric moisture, which can lead to caking or reduced efficacy. Store away from strong acids and strong alkalis.

Specification

Item	Specification
Appearance	White crystalline powder or granules
Identification (IR)	Conforms
Assay (as P2O5)	≥ 58.0 %
pH (1% Solution)	5.0 - 8.0
Water Insolubles	≤ 0.1 %
Loss on Drying	≤ 5.0 %
Heavy Metals (as Pb)	≤ 20 ppm
Iron (Fe)	≤ 30 ppm

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