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Sodium stannate, an inorganic compound with the chemical formula Na₂SnO₃, is a white crystalline solid that plays a pivotal role in various industrial applications, including electroplating, ceramics, and as a catalyst in organic synthesis.
This compound exists in both anhydrous and hydrated forms, with the anhydrous form being sodium stannate (Na₂SnO₃) and the hydrated form commonly known as sodium stannate trihydrate (Na₂SnO₃·3H₂O).
Chemical Properties
Molecular Weight: 212.69 g/mol for anhydrous sodium stannate.
Density: Approximately 4.68 g/cm³ at 25°C.
Melting Point: Around 140°C.
Solubility: Highly soluble in water, forming a strongly alkaline solution due to the basic nature of the stannate ion.
Reactivity: Sodium stannate is sensitive to air and moisture, leading to gradual decomposition.
Synonyms and Identifiers
CAS Number: 12058-66-1 (for anhydrous form), 12209-98-2 (for trihydrate).
EINECS Number: 235-030-5.
Synonyms:
,
Sodium tin oxide,Disodium stannate,Disodium oxostannanediolate,Sodium stannate (IV),Sodium hexahydroxostannate,Stannanediolate, 1-oxo-, sodium salt (1:2)
Applications
Electroplating
Sodium stannate serves as a primary source of tin in electroplating baths, providing tin ions essential for the deposition process.
It is also utilized in electroless plating processes, where it acts as a reducing agent.
Fire Retardants
In the textile industry, sodium stannate is used as a mordant in dyeing and as a fireproofing agent for fabrics.
Catalysis
Sodium stannate exhibits catalytic properties and has been employed in various organic reactions, including dehydrogenation and transesterification processes.
Energy Storage
Stannate-based materials, including sodium stannate, are being explored as anode materials in lithium-ion and sodium-ion batteries due to their high capacity and suitable operating voltage.
Safety and Handling
Hazards: Sodium stannate is classified as an irritant and may cause skin and eye irritation upon contact.
Exposure Limits:
ACGIH (TWA): 2 mg/m³ (as Sn).
OSHA (PEL): 2 mg/m³ (as Sn).
Precautions: Use appropriate personal protective equipment (PPE) when handling sodium stannate to prevent exposure.
Conclusion
Sodium stannate is a versatile compound with significant industrial applications, particularly in electroplating, catalysis, and energy storage.
Its synthesis methods are well-established, and ongoing research continues to explore its potential in various fields.
Proper handling and safety measures are essential to mitigate health risks associated with its use.
SAFETY INFORMATION ABOUT SODIUM STANNATE
First aid measures:
Description of first aid measures:
General advice:
Consult a physician.
Show this safety data sheet to the doctor in attendance.
Move out of dangerous area:
If inhaled:
If breathed in, move person into fresh air.
If not breathing, give artificial respiration.
Consult a physician.
In case of skin contact:
Take off contaminated clothing and shoes immediately.
Wash off with soap and plenty of water.
Consult a physician.
In case of eye contact:
Rinse thoroughly with plenty of water for at least 15 minutes and consult a physician.
Continue rinsing eyes during transport to hospital.
If swallowed:
Do NOT induce vomiting.
Never give anything by mouth to an unconscious person.
Rinse mouth with water.
Consult a physician.
Firefighting measures:
Extinguishing media:
Suitable extinguishing media:
Use water spray, alcohol-resistant foam, dry chemical or carbon dioxide.
Special hazards arising from the substance or mixture
Carbon oxides, Nitrogen oxides (NOx), Hydrogen chloride gas
Advice for firefighters:
Wear self-contained breathing apparatus for firefighting if necessary.
Accidental release measures:
Personal precautions, protective equipment and emergency procedures
Use personal protective equipment.
Avoid breathing vapours, mist or gas.
Evacuate personnel to safe areas.
Environmental precautions:
Prevent further leakage or spillage if safe to do so.
Do not let product enter drains.
Discharge into the environment must be avoided.
Methods and materials for containment and cleaning up:
Soak up with inert absorbent material and dispose of as hazardous waste.
Keep in suitable, closed containers for disposal.
Handling and storage:
Precautions for safe handling:
Avoid inhalation of vapour or mist.
Conditions for safe storage, including any incompatibilities:
Keep container tightly closed in a dry and well-ventilated place.
Containers which are opened must be carefully resealed and kept upright to prevent leakage.
Storage class (TRGS 510): 8A: Combustible, corrosive hazardous materials
Exposure controls/personal protection:
Control parameters:
Components with workplace control parameters
Contains no substances with occupational exposure limit values.
Exposure controls:
Appropriate engineering controls:
Handle in accordance with good industrial hygiene and safety practice.
Wash hands before breaks and at the end of workday.
Personal protective equipment:
Eye/face protection:
Tightly fitting safety goggles.
Faceshield (8-inch minimum).
Use equipment for eye protection tested and approved under appropriate government standards such as NIOSH (US) or EN 166(EU).
Skin protection:
Handle with gloves.
Gloves must be inspected prior to use.
Use proper glove
removal technique (without touching glove's outer surface) to avoid skin contact with this product.
Dispose of contaminated gloves after use in accordance with applicable laws and good laboratory practices.
Wash and dry hands.
Full contact:
Material: Nitrile rubber
Minimum layer thickness: 0.11 mm
Break through time: 480 min
Material tested:Dermatril (KCL 740 / Aldrich Z677272, Size M)
Splash contact
Material: Nitrile rubber
Minimum layer thickness: 0.11 mm
Break through time: 480 min
Material tested:Dermatril (KCL 740 / Aldrich Z677272, Size M)
It should not be construed as offering an approval for any specific use scenario.
Body Protection:
Complete suit protecting against chemicals, The type of protective equipment must be selected according to the concentration and amount of the dangerous substance at the specific workplace.
Respiratory protection:
Where risk assessment shows air-purifying respirators are appropriate use a fullface respirator with multi-purpose combination (US) or type ABEK (EN 14387) respirator cartridges as a backup to engineering controls.
If the respirator is the sole means of protection, use a full-face supplied air respirator.
Use respirators and components tested and approved under appropriate government standards such as NIOSH (US) or CEN (EU).
Control of environmental exposure
Prevent further leakage or spillage if safe to do so.
Do not let product enter drains.
Discharge into the environment must be avoided.
Stability and reactivity:
Chemical stability:
Stable under recommended storage conditions.
Incompatible materials:
Strong oxidizing agents:
Hazardous decomposition products:
Hazardous decomposition products formed under fire conditions.
Carbon oxides, Nitrogen oxides (NOx), Hydrogen chloride gas.
Disposal considerations:
Waste treatment methods:
Product:
Offer surplus and non-recyclable solutions to a licensed disposal company.
Contact a licensed professional waste disposal service to dispose of this material.
Contaminated packaging:
Dispose of as unused product
