Material Safety Data Sheet: Sodium Stannate

Identification

Product Name: Sodium Stannate
Chemical Formula: Na₂SnO₃
Synonyms: Disodium stannate, Sodium stannate trihydrate
CAS Number: 12058-66-1
Recommended Use: Industrial, laboratory applications including electroplating, dyeing, and ceramics
Distributor: Chemical supply companies, industrial wholesalers
Contact Information: Refer to supplier-specific information, including emergency phone numbers

Hazard Identification

Hazard Classification: Acute toxicity (oral, dermal, inhalation), Skin and eye irritation, Environmental hazard
Signal Word: Warning
Hazard Statements: Harmful if swallowed or inhaled; Causes skin and serious eye irritation; Toxic to aquatic life with long-lasting effects
GHS Pictograms: Exclamation mark, Environment
Precautionary Statements: Avoid inhalation of dusts, wear protective gear, wash skin thoroughly after handling, prevent release to the environment
Potential Health Effects: Respiratory discomfort, gastrointestinal symptoms (if ingested), skin reddening or burns, eye pain and possible vision loss on direct contact

Composition / Information on Ingredients

Chemical Name: Sodium Stannate
Common Name: Sodium Stannate
CAS Number: 12058-66-1
Concentration: Typically above 98% (remainder contaminants, water of crystallization in trihydrate form)

First Aid Measures

General Advice: Remove contaminated clothing and shoes; get medical attention if symptoms persist
Inhalation: Move person to fresh air; if breathing is difficult, provide oxygen, seek medical care
Skin Contact: Flush with plenty of water for at least 15 minutes; wash with soap; seek medical advice for irritation
Eye Contact: Rinse immediately with plenty of water, holding eyelids open; remove contact lenses; contact physician
Ingestion: Rinse mouth, do not induce vomiting, never give anything by mouth to unconscious person, seek immediate attention

Fire-Fighting Measures

Suitable Extinguishing Media: Water spray, dry chemical, CO₂, foam
Unsuitable Extinguishing Media: Strong water jets
Specific Hazards: Heating releases stannic and sodium oxides, which can intensify combustion risk and emit toxic fumes
Protective Equipment for Firefighters: Self-contained breathing apparatus, full protective gear
Explosion Data: Not considered an explosion hazard, but fine dust can pose ignition risk in rare scenarios
Special Procedures: Evacuate area, contain water used for extinguishing to prevent runoff into drains or waterways

Accidental Release Measures

Personal Precautions: Wear respirator, gloves, safety goggles, protective clothing
Environmental Precautions: Avoid discharge into soil, waterways, and drains; report significant spills to local authorities
Methods for Containment: Collect dry material without generating dust; use non-sparking tools
Clean-Up Procedures: Scoop up material, place in proper containers for disposal; ventilate area; wash down residues with plenty of water, preventing runoff into environment
Decontamination: Use diluted vinegar to neutralize residues on surfaces, followed by thorough rinsing

Handling and Storage

Handling: Only open containers in well-ventilated areas, minimize dust formation, wear protective equipment at all times, avoid contact with incompatible substances like acids and oxidizers
Storage: Keep containers tightly closed in cool, dry, well-ventilated spots; segregate from acids and ammonium salts to avoid dangerous reactions
Other Precautions: Store away from heat sources and direct sunlight, clearly label containers, monitor for leaks or container deterioration
Special Considerations: Use only equipment made of suitable corrosion-resistant materials and maintain regular inspection schedules

Exposure Controls and Personal Protection

Engineering Controls: Local exhaust ventilation, general area ventilation; handle in fume hood for laboratory setting
Personal Protective Equipment (PPE): NIOSH-approved respirator for particulates; chemical-resistant gloves (nitrile, PVC); splash-proof goggles or face shield; long-sleeved protective clothing
Exposure Limits: No OSHA PEL or ACGIH TLV established, but minimize exposure as per internal safety policies
Hygiene Measures: No eating, drinking, or smoking near use; wash hands thoroughly after handling; remove contaminated clothing and launder before reuse
Environmental Controls: Use closed systems for transferring; install spill containment systems in storage and use areas

Physical and Chemical Properties

Appearance: White crystalline powder, may appear as small granules
Odor: Odorless
Melting Point: Decomposes above 100 °C (trihydrate), anhydrous form melts around 1100 °C
Boiling Point: Not applicable (decomposes before boiling)
Solubility: Readily soluble in water; forms strongly basic solutions
Density: Around 2.8 g/cm³ (anhydrous); lower if hydrated
pH: 11-13 (1% solution)
Vapor Pressure: Not volatile
Other Properties: Stable under recommended storage conditions, highly hygroscopic, reacts with acids to produce stannic oxide and sodium salts

Stability and Reactivity

Chemical Stability: Remains stable under proper storage; degrades in humid or acidic conditions
Incompatible Materials: Strong acids, ammonium salts, aluminum, zinc, and certain organic materials
Hazardous Decomposition Products: Stannic oxide fumes, sodium oxides, and hydrogen when in contact with metals
Polymerization: No hazardous polymerization anticipated
Conditions to Avoid: Humidity, heat, contact with acids or ammonium compounds, improper storage

Toxicological Information

Routes of Exposure: Inhalation, skin and eye contact, ingestion
Acute Toxicity: Harmful by ingestion or inhalation; may cause nausea, vomiting, abdominal pain, respiratory discomfort, coughing
Chronic Effects: Prolonged or repeated exposure may lead to dermatitis and respiratory irritation; chronic tin exposure linked to liver and kidney effects in some animal studies
Irritation: Causes moderate to severe skin and eye irritation
Sensitization: No evidence of skin sensitization from current studies; dust may irritate airways on repeated exposure
Carcinogenicity/Mutagenicity: Not classified as carcinogenic by IARC, NTP, OSHA; limited mutagenicity data available
Other Information: No significant reproductive toxicity identified; toxicity mainly relates to tin and alkali exposure

Ecological Information

Aquatic Toxicity: Toxic to aquatic organisms; high pH can harm aquatic ecosystems, disrupt microflora
Persistence and Degradability: Inorganic material; does not biodegrade, but can dissolve and persist in water
Bioaccumulation: Tin compounds may accumulate in aquatic organisms; unlikely to bioaccumulate in mammals
Mobility in Soil: High solubility leads to mobility in soil, possible groundwater contamination if large spills occur
Other Adverse Effects: Alteration of water pH impacts effluent quality; releases should be strictly controlled

Disposal Considerations

Disposal Methods: Dispose of as hazardous waste according to local, regional, or national regulations; consult with licensed chemical waste disposal contractors
Container Disposal: Empty containers must be triple rinsed and disposed of as chemical waste, not in general trash
Precautions: Do not release into sewers, surface waters, or soil; treat solutions chemically to neutralize before disposal if authorized
Recycling: Feasible only if specialized reclaim operations are available; strict handling practices required to avoid environmental contamination

Transport Information

UN Number: Not regulated under common transport codes (verify with local authorities)
Transport Hazard Class: Not classified as dangerous goods for land, air, or sea, but local transport regulations may apply
Packing Group: Not assigned due to low combustibility, but handle as a hazardous chemical
Special Precautions for Transport: Secure packaging to avoid contact with incompatible substances, minimize dust generation, guarantee containers are clearly labeled and sealed
Environmental Hazards: Strongly discourage bulk transport in proximity to waterways or sensitive habitats, include emergency clean-up kits with shipments

Regulatory Information

OSHA Status: Not specifically listed, general chemical safety standards apply
SARA Title III: Not classified in Section 302, may be subject to reporting under Section 313 (tin compounds)
TSCA: Listed on the US Toxic Substances Control Act inventory
EU Regulations: Covered under REACH as a registered substance; hazard labeling as required by CLP and GHS
Other National Inventories: Present on AICS (Australia), DSL (Canada), ENCS (Japan), EINECS/ELINCS (EU)
Labeling Requirements: Product must display supplier identification, hazard pictograms, precautionary and hazard statements as per GHS