POTASSIUM TIN() OXIDE
Potassium stannate
CAS: 12142-33-5
Molecular Formula: K2O3Sn
POTASSIUM TIN() OXIDE - Names and Identifiers
| Name | Potassium stannate |
| Synonyms | Potassium stannate POTASSIUM STANNATE Stannate,dipotassium POTASSIUM TIN() OXIDE Potassium tin(Ⅳ) oxide POTASSIUM TIN (IV) OXIDE dipotassium tin trioxide stannate(sno32-),dipotassium dipotassium oxostannanediolate POTASSIUMSTANNATE,TRIHYDRATE,POWDER,PURIFIED |
| CAS | 12142-33-5 |
| EINECS | 235-255-9 |
| InChI | InChI=1/2K.3H2O.3O.Sn/h;;3*1H2;;;;/q2*+1;;;;;2*-1;/r2K.O3Sn.3H2O/c;;1-4(2)3;;;/h;;;3*1H2/q2*+1;-2;; |
POTASSIUM TIN() OXIDE - Physico-chemical Properties
| Molecular Formula | K2O3Sn |
| Molar Mass | 244.9 |
| Density | 3,197 g/cm3 |
| Melting Point | 140°C (dec.) |
| Water Solubility | 110.5g/100mL H2O at 15°C; insoluble alcohol [MER06] [KIR83] |
| Appearance | colorless crystals |
| Specific Gravity | 3.197 |
| Storage Condition | Room Temprature |
| Sensitive | 0: forms stable aqueous solutions |
| Physical and Chemical Properties | .
|
| Use | It is used for potassium Stannate tin plating (especially in electronics, automobile manufacturing, canned food boxes and other aspects of tin plating) and fabric printing and dyeing industry, also used in glass, ceramics and other industries |
POTASSIUM TIN() OXIDE - Risk and Safety
| Risk Codes | R20/21/22 - Harmful by inhalation, in contact with skin and if swallowed. R34 - Causes burns |
| Safety Description | S22 - Do not breathe dust. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) |
| UN IDs | 1759 |
| TSCA | Yes |
POTASSIUM TIN() OXIDE - Nature
Open Data Verified Data
The appearance is white or light brown crystalline powder, which is orthorhombic crystal or rhombohedral crystal. Relative density of 3. 197, soluble in water, alkaline, water solubility of 110. 5g/lOOmL(15 ℃)I insoluble in alcohol and acetone. It is easy to absorb carbon dioxide in the air to decompose and generate potassium carbonate and tin hydroxide. Three crystals of water were lost by heating to 140 °c.
Last Update：2025-06-10 22:55:16
POTASSIUM TIN() OXIDE - Preparation Method
Open Data Verified Data
- nitric acid method: After melting the tin block, it is quenched into tin flowers by water, and reacted with concentrated nitric acid in the reactor by fully stirring to obtain metastamic acid; After removing impurities, then it is fused with potassium hydroxide, and the eutectic is dissolved in water, and the partial tin acid and potassium hydroxide are neutralized to form potassium Stannate solution, and the product is prepared by precipitation, evaporation and crystallization.
- alkaline hydrolysis: as with the nitric acid method, first made into tin flowers, and then mixed with potassium hydroxide, potassium nitrate reaction, the resulting product after a series of post-treatment, removal of impurities, that is, the product.
Last Update：2022-01-01 11:06:54
POTASSIUM TIN() OXIDE - Application
Open Data Verified Data
potassium stannate is mainly used in the electroplating industry to replace silver with tin and replace nickel with tin-copper alloy coating. It can not only reduce the production cost, but also use potassium salt instead of sodium salt can produce higher cathode efficiency and conductivity, improve the surface brightness, adhesion and corrosion resistance of plated parts, such as used in automobile manufacturing, electronics industry, plating of canned food boxes, RMB, etc. Potassium Stannate can also be used as mordant in printing and dyeing industry, textile industry as weighting agent. In addition, in the glass-ceramic industry, advanced decorative materials are also widely used.
Last Update：2025-08-19 16:24:40
POTASSIUM TIN() OXIDE - Safety
Open Data Verified Data
This product listed production methods, by-products are mainly ammonia, nitric oxide, water and a small amount of impurities. Ammonia and nitric oxide can be absorbed by water to produce ammonia and nitric acid; Industrial wastewater can be comprehensively treated by the Environmental Protection Department. Risk: potassium Stannate dust on human body
Harmful. Long-term inhalation of tin-containing dust, showing symptoms of pneumoconiosis, the maximum allowable concentration in the air of the United States is 2 mg/m3. Production and use of the product of the site personnel, contact dust concentration of 10 ~ l5mg/m3, will suffer from chronic bronchitis, presented with the initial symptoms of emphysema, or moderate ventilator insufficiency. GB 12268-90-62001 UNNo.2814. Packaging and storage: The product is decomposed into other products by reaction with carbon dioxide in the air. Special attention should be paid to packaging and sealing. Polyethylene plastic bags should be used as the inner packaging bag, each net weight: 18kg, 20kg, 30kg, 40kg, etc.; The mouth of the bag is sealed with a machine; The outer package can be filled with fiberboard drum or black iron drum or polypropylene woven bag. Packaging at any time with a machine to seal the mouth of the bag, the lid should be lined and fastened. Outside the package to have a clear mark "moisture-proof" fire "of the text and icons, as well as the provisions of the text description of the goods. Store in ventilated, dry, waterproof, fire-proof, moisture-proof chemical warehouse. Do not transport with flammable and easily corrosive and acid items. Care should be taken when handling to avoid damage to the package. If there is damage, replace the new package immediately, and cover the cloth to prevent the sun and rain when transporting. Hazards and protection: the working environment should be ventilated and clean to prevent dust accumulation and retention in the air. Operators should have labor protection, with emphasis on the protection of the respiratory system. Production and use of a large number of potassium Stannate, to wash and change clothes, protective equipment should be stored separately, often change. Staff should regularly check the respiratory system, do early detection, early treatment. Fire can be used in dry sand, dry powder, asbestos cloth.
Last Update：2025-06-10 22:55:16
POTASSIUM TIN() OXIDE - Reference Information
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| use | potassium stannate is a replacement fine chemical product in the electroplating industry, mainly used to replace silver with tin and nickel with tin-copper alloy coating. It can not only reduce production costs, but also use potassium salt instead of sodium salt to produce higher cathode efficiency and conductivity, and improve the surface brightness, adhesion and corrosion resistance of the plated parts, such as electroplating in automobile manufacturing, electronics industry, canned food boxes, RMB, etc. Potassium stannate can also be used as a mordant in the printing and dyeing industry, as a weight enhancer in the textile industry, etc. In addition, it is also widely used in glass ceramic industry and advanced decorative materials. It is used for tin plating with potassium stannate (especially in electronics, automobile manufacturing, canned food boxes, etc.) and fabric printing and dyeing industry, and also used in glass, ceramics and other industries Used for tin plating and fabric printing and dyeing Used for tin plating with potassium stannate, and also used in glass, ceramics, printing and dyeing industries |
| production method | neutralization of stannic acid and potassium hydroxide to generate potassium stannate solution, which is precipitated, evaporated and crystallized to obtain the product. |
Last Update：2024-04-10 22:29:15
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