Reaxis®  E144P – Sodium Stannate

REAXIS® E144P (Sodium Stannate) is a Sn (IV)-based inorganic tin chemical, also known as sodium stannate trihydrate, sodium tin hydroxide, or hexahydroxy stannate. The standard crystalline grade of REAXIS® E144P contains approximately 44% tin. REAXIS® E144P is produced such that residual metal contaminants are controlled, resulting in a high-purity end product. The residual metal of REAXIS® E144P is lower compared to the standard grade sodium stannate, REAXIS® E144.  Alternative grades to the REAXIS® E144P include liquid grades REAXIS® E144-22 and Sodium Stannate, 30% and REAXIS® E144P. Alternatives to REAXIS® E144P would be the potassium grades REAXIS® E140 and REAXIS® E140P

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Technical Information

  • Product Category Inorganic Tin

  • Chemical Name Sodium Stannate, Peroxide Grade

  • CAS Number 12027-70-2

Typical Specifications

Parameter Range
Tin Content (%) 42.5 Min
Free NaOH (%) 1.0 Max
Moisture (%) 2.0 Max
Insolubles (%) 0.02 Max
Fe (ppm) 25 Max
Pb (ppm) 25 Max
Chlorides (ppm) 100 Max
Sulfate (ppm) 100 Max

International Regulatory Listings

  • TSCA (US) Yes

  • DSL (Canada) Yes

  • REACH (EU) Yes

  • AICS (Australia) Yes

  • KECI (South Korea) Yes

  • ENCS (Japan) Yes

  • TCSI (Taiwan) Yes

  • NZloC (New Zealand) Yes

  • PICCS (The Philippines) Yes

  • NDSL (Canada) No

  • IECSC (China) No


REAXIS® E144P is used in a wide range of applications including surface finishing, stabilization of hydrogen peroxide, and electrolyte additives for battery applications. In surface finishing applications, sodium stannate trihydrate ensures a smooth and consistent finish. Given its low residual metal impurities, REAXIS® E144P is typically used in personal care-related applications. For non-personal care applications, the standard grade of sodium stannate, REAXIS® E144, is typically used. REAXIS® E144P can be used as an alkaline electroplating additive in high-speed plating operations given its ideal solubility. Related applications include coating of automotive pistons and coin minting.  REAXIS® E144P can be used as a stabilizer for hydrogen peroxide via the complexation of destabilizing residual metals, resulting in extended storage stability. REAXIS® E144P can be used in electrolytes in metal-air batteries to minimize and control electrode corrosion/passivation/fouling. REAXIS® E144 is present on a wide range of international regulatory lists.  


REAXIS® E144 has a reactivity characterized by its high tin content, species of tin present as Sn (IV), and solubility. In terms of functionality, REAXIS® E144 acts as both a good chelating agent for a wide variety of metals and an efficient tin metal plating agent.

Package & Storage


  • 25kg (55lb) Pails


REAXIS® E144P should be stored in the original packaging.  The container should be closed tightly after each use to maximize shelf life.

Safety and Handling

Before use of Reaxis products please refer to the relevant Safety Data Sheet (SDS) for safety and toxicological data as well as for the information on proper transportation, storage, and use. SDSs are available by request via our web site, contacting your local representative, or emailing direct to

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This information is provided to the best of our knowledge but without obligation. Reaxis is not liable for any incorrect or missing information. This data sheet becomes invalid upon publication of a new version. Please contact us for the latest version.

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