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Material Safety Data Sheet (MSDS) for Strontium Nitrate

Identification

Product Name: Strontium Nitrate
Chemical Formula: Sr(NO3)2
CAS Number: 10042-76-9
Synonyms: Celestine nitrate, Strontium dinitrate
Recommended Uses: Pyrotechnics, signal flares, oxidizing agent
Manufacturer Contact: Manufacturer address, emergency phone number, website for further reference

Hazard Identification

GHS Classification: Oxidizing solid (Category 2), Acute toxicity oral (Category 4), Eye irritation (Category 2A)
Signal Word: Warning
Hazard Statements: May intensify fire (oxidizer). Harmful if swallowed. Causes serious eye irritation.
Pictograms: Flame over circle, exclamation mark
Precautionary Statements: Keep away from heat, sparks, open flames. Wear protective equipment. In case of ingestion, rinse mouth and seek medical advice. Avoid release to environment.

Composition / Information on Ingredients

Substance: Strontium Nitrate
Purity: More than 98%
Impurities: Trace metals (lead, barium, potassium, calcium may be present in low concentrations, depending on manufacturer)
Molecular Weight: 211.63 g/mol
Component Breakdown: Strontium (Sr) 41.8%, Nitrate (NO3) 58.2%

First Aid Measures

Inhalation: Move person to fresh air, keep at rest, seek medical attention if breathing difficulties persist.
Skin Contact: Wash thoroughly with soap and water. Remove contaminated clothing and footwear. If irritation develops, contact a healthcare provider.
Eye Contact: Rinse eyes with plenty of lukewarm water for at least 15 minutes, keeping eyelids open. Remove contact lenses if present and easy to do. Call a doctor if irritation continues.
Ingestion: Rinse mouth cautiously, do not induce vomiting. Get immediate medical attention. Drink water if conscious.

Fire-Fighting Measures

Suitable Extinguishing Media: Water spray, fog. Do not use dry chemicals or carbon dioxide due to oxidizing nature.
Specific Hazards: Strong oxidizer, supports combustion, may cause fire or explosion on contact with combustible material. Toxic nitrogen oxide gases may be released.
Protective Equipment: Firefighters wear self-contained breathing apparatus and full protective gear.
Special Procedures: Move containers away from fire area if safe to do so; avoid inhalation of gases.

Accidental Release Measures

Personal Precautions: Evacuate unnecessary personnel, wear chemical-resistant gloves and goggles, ensure proper ventilation.
Environmental Precautions: Prevent access to drains, sewers, or waterways. Alert relevant authorities if large spill enters water sources.
Spill Response: Sweep or scoop up material without generating dust, place in suitable, approved containers. Do not use combustible cleaning tools.
Decontamination: Wash spill site after material removal, dispose of waste according to local regulations.

Handling and Storage

Handling: Avoid dust formation, prevent contact with skin, eyes, and clothing. Use spark-proof tools and equipment. Wash hands thoroughly after handling.
Storage: Store in cool, dry, well-ventilated place, away from organics, reducing agents, and combustibles. Keep container tightly closed, label properly, and store away from acids and moisture.
Special Storage Conditions: Maintain separate from food and drink. Use secondary containment to minimize accidental release.

Exposure Controls and Personal Protection

Occupational Exposure Limits: No specific OSHA or ACGIH limits for strontium nitrate, general dust exposure limits apply.
Engineering Controls: Local exhaust ventilation, eye wash stations, and safety showers recommended.
Personal Protective Equipment: Chemical splash goggles, impervious gloves (nitrile or rubber), long-sleeved protective clothing, dust mask or respirator if airborne dust is generated.
Hygiene Measures: No eating, drinking, or smoking in work areas. Remove contaminated clothing and equipment before entering eating areas.

Physical and Chemical Properties

Appearance: White, odorless crystalline powder
Odor: No smell
pH: Slightly acidic (5.5 – 7, 50 g/L water solution)
Melting Point: 570°C
Boiling Point: Decomposes before boiling
Solubility: Soluble in water (870 g/L at 20°C)
Vapor Pressure: Negligible
Density: 2.986 g/cm³
Explosion Limits: Not applicable
Partition Coefficient: Not available
Decomposition Temperature: Releases nitrogen oxides above 570°C

Stability and Reactivity

Chemical Stability: Stable under recommended storage conditions.
Hazardous Reactions: May react with organic materials, strong acids, and reducing agents, causing fire or explosion.
Incompatible Materials: Combustibles, sulfides, phosphorous, powdered metals.
Hazardous Decomposition Products: Nitrogen oxides, strontium oxide. Releases toxic fumes under fire or high temperature.
Conditions to Avoid: Moisture, extreme heat, physical shock or friction.

Toxicological Information

Acute Toxicity: May cause irritation to respiratory tract, eyes, skin. Harmful if swallowed - LD50 rat (oral): about 2750 mg/kg.
Chronic Effects: Repeated exposure affects central nervous system, may impair bone mineralization. Limited data on carcinogenic, mutagenic, or reproductive effects.
Routes of Exposure: Inhalation, ingestion, dermal, ocular.
Symptoms: Burning eyes, skin redness, cough, nausea, vomiting after ingestion.
Sensitization: No known sensitizing effects reported.
Medical Conditions Aggravated: Pre-existing skin, eye, and respiratory disorders.

Ecological Information

Aquatic Toxicity: Toxic to aquatic organisms; avoid release to environment, may persist in water and soil.
Persistence and Degradability: Nitrate ion may contribute to eutrophication in water bodies, persistence based on environmental conditions.
Bioaccumulation Potential: Strontium compounds can accumulate in aquatic and terrestrial organisms.
Mobility in Soil: Soluble, can migrate through soil to groundwater.
Other Adverse Effects: May disrupt natural mineral cycles in aquatic ecosystems.

Disposal Considerations

Product Disposal: Dispose of unused material in accordance with local, regional, and national regulations. Do not dump into drains or natural environments.
Contaminated Packaging: Rinse thoroughly before recycling, otherwise treat as hazardous waste.
Special Instructions: Consult state, federal, or local guidelines for proper disposal method. Use licensed hazardous waste contractor if necessary.

Transport Information

UN Number: UN1507
Proper Shipping Name: Strontium Nitrate
Transport Hazard Class: 5.1 (Oxidizer)
Packing Group: III
Marine Pollutant: Not classified as marine pollutant
Special Precautions: Secure packaging to prevent release, keep away from combustible materials during transit, label according to national and international transport laws

Regulatory Information

OSHA Status: Considered hazardous under Hazard Communication Standard
TSCA Inventory: Listed
SARA Title III: Not specifically listed under Sections 302, 304, or 313
EU Regulation (EC 1272/2008): Oxidizing solid, acute oral toxicity
WHMIS Classification (Canada): Oxidizing material, toxic material causing other toxic effects
Other Regulations: Comply with local, regional, and national safety, health, and environmental regulations regarding handling and disposal