Stannous pyrophosphate

CAS Number
15578-26-4
EC Number
239-635-5
Chemical Formula
H4O7P2.2Sn
Molecular Weight
411.36 g/mol

Description

Stannous pyrophosphate (CAS 15578-26-4), also known as ditin pyrophosphate, is an inorganic tin salt used as a stabilizer and buffering agent in food and personal care manufacturing. It functions primarily to inhibit oxidative degradation and control pH in finished formulations, extending product shelf life and maintaining quality consistency across various industrial applications.

In canned seafood and meat products, it prevents struvite crystal formation and controls discoloration caused by metal-catalyzed oxidation during the preservation and storage process. Oral care formulators incorporate it into toothpaste and mouthwash systems where it acts as a tartar-control agent, helping to inhibit calcium phosphate deposition on tooth surfaces effectively.

In beverage and food processing, it serves as a sequestrant to protect flavor stability against oxidative changes during storage. Personal care manufacturers also use it in stain-prevention formulations. This material is utilized where controlled tin ion release is required. The product is supplied as a white to off-white powder available in food-grade specifications aligned with FCC standards.

It is also available as technical-grade material for industrial applications. Packaging is typically offered in multi-kilogram bags or drums to meet both small-batch and bulk procurement requirements.

Other Names (Synonyms)

Diphosphoric acid, tin(2+) salt (1:2)|Ditin pyrophosphate|Tin(2+) pyrophosphate|Stannous pyrophosphate [USAN]|Pyro stannous phosphate|MP 4018|Tin(2+) diphosphate (1:2)|Ditin(2+) pyrophosphate (4-)

Key Technical Features

  • High Purity Grade standard
  • Consistent Batch Quality
  • Full Regulatory & REACH Support
  • Global Logistics Network enabled

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Physical Properties

Melting Point >400 °C (decomp)
Density 4.01 g/cm³
Color White
Odor Odorless
Form Powder
Water Solubility Insoluble in water.
Log P -1 at 20℃

Documentation

Safety & Handling Learn More

Warning
GHS07· Irritant GHS08· Health Hazard

Hazard Statements

H315 Causes skin irritation
H319 Causes serious eye irritation
H335 May cause respiratory irritation
H372 Causes damage to organs through prolonged or repeated exposure

Precautionary Statements

P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P264 Wash … thoroughly after handling.
P270 Do not eat, drink or smoke when using this product.

Trade & Regulatory

HS Code 28353990
Storage Class 11 - Combustible Solids
WGK (Germany) 2
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