Material Safety Data Sheet: Stannous Chloride

Identification

Product Name: Stannous Chloride
Chemical Formula: SnCl₂
CAS No.: 7772-99-8
Synonyms: Tin(II) chloride, Tin salt
Recommended Use: Laboratory reagent, chemical synthesis, metal industry
Supplier: List contact details for chemical supplier, with emergency phone numbers
Emergency Telephone: Emergency response contact number for immediate advice

Hazard Identification

GHS Classification: Acute toxicity (oral, dermal), Skin irritation, Eye irritation, Aquatic acute hazard
Label Elements: GHS pictograms for toxic, irritant, environmental hazard, signal word "Danger"
Hazard Statements: Harmful if swallowed or in contact with skin, causes skin and eye irritation, toxic to aquatic life
Precautionary Statements: Avoid breathing dust, wash contaminated skin thoroughly after handling, wear protective gloves and eye protection, avoid release to environment

Composition / Information on Ingredients

Chemical Identity: Stannous Chloride
Common Name: Tin(II) chloride dihydrate
Concentration: 98–100% pure substance
Impurities: Trace amounts of heavy metals (lead, iron) may be present depending on source

First Aid Measures

Inhalation: Remove person to fresh air, keep at rest, seek medical attention for coughing, wheezing, or any breathing difficulty
Skin Contact: Immediately remove contaminated clothing, rinse skin with plenty of water, wash affected area with soap, seek medical advice if irritation persists
Eye Contact: Rinse mouth thoroughly with water, seek medical help if swallowing occurs, never give anything by mouth to an unconscious person
Ingestion: Rinse mouth thoroughly with water, seek medical help if swallowing occurs, never give anything by mouth to an unconscious person
Symptoms: Redness, irritation, coughing, breathing difficulty, stomach upset, watery eyes

Fire-Fighting Measures

Suitable Extinguishing Media: Use water spray, dry chemical, carbon dioxide, or foam on surrounding fire
Specific Hazards: Toxic and irritating gases such as hydrogen chloride and tin oxides may form during fire
Protective Equipment: Firefighters should wear full protective gear, including self-contained breathing apparatus
Special Procedures: Move containers from fire area if safe, avoid inhaling fumes

Accidental Release Measures

Personal Precautions: Evacuate unprotected personnel, use recommended personal protective equipment such as gloves and goggles
Environmental Precautions: Prevent runoff into drains, watercourses, and soil
Methods for Cleanup: Mop up with suitable absorbent, keep in labeled containers for disposal, ventilate area, clean spill area thoroughly after removal
Emergency Procedures: Inform responsible authorities if release leads to environmental contamination

Handling and Storage

Safe Handling: Work in well-ventilated areas, avoid dust formation, handle with care using appropriate PPE, keep away from incompatible chemicals like strong acids and oxidizers
Hygiene Measures: Wash hands and face before breaks and after handling material, remove contaminated clothing immediately
Storage Conditions: Store in tightly closed original container in cool, dry, well-ventilated area, keep away from moisture and heat sources, do not store with incompatible substances
Incompatibilities: Acids, strong oxidizing agents, alkalis, moisture

Exposure Controls and Personal Protection

Exposure Limits: Occupational exposure limits for tin compounds, such as OSHA PEL and ACGIH TLV, may apply (typically 2 mg/m³ for tin compounds, not organotin)
Engineering Controls: Use of local exhaust ventilation, safety showers, and eyewash stations in chemical handling areas
Personal Protection: Chemical-resistant gloves, safety goggles, lab coats, respiratory protection if handling powders or dust
General Protective Measures: Do not eat, drink or smoke around material, keep contaminated work clothes away from regular linens, maintain good housekeeping

Physical and Chemical Properties

Appearance: White crystalline powder
Odor: Odorless
pH (aqueous solution): Approximately 2 (1% w/v)
Melting Point: 246°C (decomposes)
Boiling Point: Decomposes before boiling
Solubility: Soluble in water, ethanol, insoluble in non-polar solvents
Density: 2.71 g/cm³
Vapor Pressure: Not applicable (non-volatile solid)
Flash Point: Not applicable
Other Properties: Hygroscopic, readily absorbs moisture from air

Stability and Reactivity

Chemical Stability: Stable in dry air, hydrolyzes in moisture to form hydrochloric acid fumes
Reactivity: Reacts with acids to release toxic gases, reacts with alkalis, can act as a reducing agent
Hazardous Decomposition Products: Emits hydrogen chloride gas and tin oxides if heated to decomposition
Conditions to Avoid: Exposure to moisture, elevated temperatures, contact with incompatible chemicals
Polymerization: Will not occur

Toxicological Information

Acute Toxicity: Oral LD₅₀ (rat): 700 mg/kg, can cause digestive disturbances, nausea, vomiting, diarrhea
Skin and Eye Irritation: Causes irritation, redness, and burning sensation
Inhalation: Dust may irritate respiratory system, coughing, sneezing, throat irritation
Chronic Effects: Repeated exposure linked with skin sensitization, dermatitis, may affect kidney and liver function
Carcinogenicity: Not classified as carcinogenic by IARC, NTP, OSHA
Other Information: Not listed as mutagenic or teratogenic in available data

Ecological Information

Ecotoxicity: Toxic to aquatic life, possible accumulation in sediments and water systems
Mobility: Dissolves readily in water, can move through soil and reach groundwater
Persistence and Degradability: Chemical breaks down slowly in the environment, especially in the absence of water
Bioaccumulation: Potential to accumulate in aquatic organisms
Other Effects: Discharge into the environment should be controlled to prevent long-term damage to ecosystems

Disposal Considerations

Waste Treatment Methods: Dispose of in accordance with local, state, or national regulations for hazardous materials
Product Disposal: Transfer to an approved chemical waste facility using sealed, labeled containers
Contaminated Packaging: Rinse containers before disposal as hazardous waste
Precautions: Do not pour into drains, water systems, or regular waste streams

Transport Information

UN Number: UN 3260
Proper Shipping Name: Corrosive solid, acidic, inorganic, n.o.s. (contains Stannous Chloride)
Transport Hazard Classes: 8 (Corrosive)
Packing Group: III
Environmental Hazards: Mark transport units with "Marine Pollutant" label if required
Special Transport Notes: Ensure containers are secure and labeled according to regulations, avoid rough handling to prevent container breach

Regulatory Information

US Regulatory Status: Subject to OSHA, CERCLA, SARA Title III and Right-To-Know reporting if large quantities are handled
EU Regulations: Classified as hazardous according to CLP Regulation (EC) No 1272/2008
International Inventories: Listed on TSCA and EINECS registers
Labelling Requirements: Ensure accurate hazard statements, pictograms, and handling instructions are displayed
Other Regulatory Details: Consult local environmental, health, and safety regulations for additional requirements