Item Index
Appearance White powder or colorless crystals


Packing& Storage

Packing In 25kg barrel
Storage 20℃, 2 years.
Shipping Room temperature in China; may vary elsewhere


General Information

1.1 Chemical & Physical Properties

Common Names Potassium stannate | Dipotassium bis(oxidanidyl)-oxidanylidene-tin trihydrate
CAS No. 12142-33-5 Boiling Point (℃) N/A
Molecular Weight 244.89600 Melting Point (℃) 140°C (dec.)
Appearance White powder or colorless crystals Vapor Specific Gravity N/A
HS Code 2841900090 Flash Point (℃) N/A
Solubility Soluble in water, alkaline, insoluble in alcohol and acetone. Autoignition Temperature (℃) N/A


1.2 Safety Information

Safety Phrases S22-S36/37/39-S45
WGK Germany
Packaging Group
Hazard Class


Inhalation Cough. Sore throat. Use local exhaust or breathing protection. Fresh air, rest.
Skin Redness. Burning sensation. Itching. Protective gloves. Remove contaminated clothes. Rinse and then wash skin with water and soap.
Eyes Redness. Pain. Wear safety goggles. First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention.
Ingestion Abdominal pain. Nausea. Vomiting. Do not eat, drink, or smoke during work. Wash hands before eating. Rinse mouth. Induce vomiting (ONLY IN CONSCIOUS PERSONS!). Refer for medical attention .


1.3 Synthetic Route

Metastannic acid and potassium hydroxide are neutralized to generate potassium stannate solution, which is precipitated, evaporated and crystallized to obtain products.

The use of potassium stannate
Potassium stannate is mainly used in the electroplating industry to replace silver with tin and nickel with tin-copper alloy. It can not only reduce production costs but also replace sodium with potassium to produce higher cathode efficiency and conductivity and improve the surface brightness, adhesion, and corrosion resistance of plated parts, such as those used in automobile manufacturing, the electronics industry, canned food boxes, Electroplating of RMB, etc. Potassium stannate can also be used as a mordant in the printing and dyeing industry and as a weighting agent in the textile industry. In addition, it is also widely used in the glass ceramic industry and advanced decorative materials.