Description

Stannous Pyrophosphate [Usan] is a high-purity, inorganic tin compound with the CAS registry number 69679-28-3. This specialized material is valued for its controlled reactivity and specific ionic properties, making it a critical component in advanced industrial and pharmaceutical formulations. It is primarily sought by manufacturers in the dental, pharmaceutical, and specialty chemical sectors for applications requiring precise metal ion sources.

Application

• Dental Care Products: A key active ingredient in anti-sensitivity toothpastes and desensitizing gels, where it helps occlude dentinal tubules.
• Pharmaceutical Intermediates: Used in the synthesis of certain radiopharmaceuticals and diagnostic agents, particularly in nuclear medicine.
• Catalyst Systems: Serves as a precursor or co-catalyst in specialized organic synthesis and polymerization reactions.
• Corrosion Inhibition: Incorporated into advanced coatings and pretreatment solutions for metal surfaces.
• Ceramic & Glass Manufacturing: Acts as a opacifier and colorant in the production of specialty glasses and ceramic glazes.
• Electroplating Solutions: Used in specific tin-alloy electroplating baths to deposit functional coatings.

Basic Information

Product Name	Stannous Pyrophosphate [Usan]
CAS No.	69679-28-3
Molecular Formula	Sn₂P₂O₇
Molecular Weight	411.32 g/mol
Synonyms	Tin(II) pyrophosphate; Stannous diphosphate; Diphosphoric acid, tin(2+) salt (1:2); Pyrophosphoric acid, tin(2+) salt; USAN Stannous Pyrophosphate; Tin pyrophosphate (Sn₂P₂O₇); Stannous pyrophosphate (USP); CAS 69679-28-3
EINECS	Contact for details

Quality Control

Our Stannous Pyrophosphate [Usan] is manufactured under a strict quality management system to ensure batch-to-batch consistency and reliability. Production adheres to current Good Manufacturing Practices (cGMP) where applicable, and the material meets relevant specifications for pharmaceutical and industrial use. A comprehensive Certificate of Analysis (COA) is provided with each shipment, detailing purity, assay, and impurity profiles.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed after initial opening to prevent moisture absorption, which can affect product stability and performance.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to standard
Assay (Sn₂P₂O₇)	≥ 98.0 %
Tin (Sn) Content	56.5 - 57.5 %
Loss on Drying	≤ 2.0 %
Heavy Metals (as Pb)	≤ 20 ppm
Arsenic (As)	≤ 3 ppm
Chloride (Cl)	≤ 0.01 %
Sulfate (SO₄)	≤ 0.02 %
Particle Size (Typical)	Passes through 200 mesh

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