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Product Name: Sodium Nitrate
Chemical Formula: NaNO3
Molecular Weight: 85.00 g/mol
Synonyms: Chile saltpeter, Soda niter
CAS Number: 7631-99-4
Recommended Uses: Fertilizers, food preservatives, laboratory reagents, explosives, oxidizing agent in chemical industry
Supplier Information: Manufacturing address, contact phone, emergency contact details specified by local distributor or producer
GHS Classification: Oxidizing Solid (Category 3), Eye Irritant (Category 2A)
Hazard Symbols: Flame over circle, exclamation mark
Signal Word: Warning
Hazard Statements: May intensify fire, oxidizer; causes serious eye irritation
Precautionary Statements: Keep away from clothing and combustible materials; store in dry, cool, well-ventilated space; avoid dust generation and contact with eyes; employ personal protective equipment as indicated by workplace assessment
Component: Sodium Nitrate
Chemical Formula: NaNO3
Concentration: 98% – 100% by weight
Impurities: Small traces of sodium chloride, calcium salts, magnesium salts possible based on source
Other Components: None relevant to reported hazards
Inhalation: Move person to fresh air, keep at rest, seek medical attention if symptoms persist or breathing becomes difficult
Skin Contact: Remove contaminated clothing, wash skin thoroughly with water and soap, consult physician if irritation or redness continues
Eye Contact: Rinse cautiously with tepid water for at least 15 minutes, lift eyelids occasionally, consult eye specialist for persistent irritation
Ingestion: Do not induce vomiting, rinse mouth with water, offer small amounts of water if conscious, seek immediate medical help
Most Important Symptoms: Cough, shortness of breath, eye redness, abdominal cramping on large exposure
Advice for Doctor: Treat symptomatically, monitor for methemoglobinemia in severe oral exposures
Extinguishing Media: Use water spray, foam, or dry chemical; sodium nitrate feeds fire through oxidization but does not burn itself
Specific Hazards: Heating releases toxic gases including nitrogen oxides; supports combustion, fire may reignite after extinguishing if material remains hot
Protective Equipment for Firefighters: Full protective gear including self-contained breathing apparatus, chemical-resistant gloves, and goggles; avoid inhalation of decomposition fumes
Additional Advice: Remove containers from fire area if safe; cool with water spray to prevent rupture due to buildup of pressure
Personal Precautions: Evacuate workspace if large spill occurs, ventilate area, wear protective gloves, goggles, respirator suitable for airborne dust
Environmental Precautions: Discharge into waterways can fuel algal blooms and disrupt aquatic life; prevent run-off from entering drains, surface and ground water
Methods for Containment and Cleaning Up: Sweep up material without generating dust, use dedicated non-sparking tools, collect in secure containers for proper disposal; flush remaining traces with water once bulk removed
Precautions for Safe Handling: Avoid contact with combustible materials, never smoke or use open flame nearby, keep out of reach of minors, minimize dust, wash hands after use
Conditions for Safe Storage: Store in corrosion-resistant containers, keep container tightly closed in dry, well-ventilated place, away from acids, reducing agents, and organic materials; avoid temperature extremes and damp conditions; maintain clear labeling
Occupational Exposure Limit: No OSHA PEL; ACGIH recommends minimizing dust exposure
Engineering Controls: Ensure effective local exhaust ventilation, maintain dust levels below occupational exposure standards
Respiratory Protection: Use NIOSH-approved particulate respirator if airborne concentrations exceed limits or during cleanup
Skin Protection: Chemical-resistant gloves, lab coat, work uniform
Eye Protection: Tight-fitting safety goggles or face shield
Hygiene Measures: Wash hands before breaks, after handling; separate work clothing; clean up spills promptly
Appearance: White, crystalline, odorless powder or granules
Melting Point: 308°C (586°F)
Boiling Point: Decomposes above 380°C
Density: 2.26 g/cm³ at 20°C
Solubility in Water: Highly soluble, 874 g/L at 20°C
pH: Nearly neutral in solution (5.5 – 8.5)
Vapor Pressure: Not applicable (non-volatile solid)
Decomposition Temperature: Releases nitrogen oxides at temperatures above 380°C
Chemical Stability: Remains stable in normal conditions, decomposes on strong heating
Reactivity: Oxidizer; may cause or intensify combustion in contact with fuels, reducing agents, or organics
Incompatible Materials: Strong acids, reducing agents (e.g., powdered metals, sulfur), combustibles, ammonium salts
Hazardous Decomposition Products: Toxic nitrous gases formed upon decomposition or fire
Conditions to Avoid: Moisture, high temperature, sources of ignition, contaminated storage environment
Acute Toxicity: Oral LD50 (rat) approximately 1267 mg/kg; higher concentrations may cause methemoglobinemia
Routes of Exposure: Inhalation, skin, ingestion, eyes
Symptoms of Exposure: Irritation of eyes, nose, respiratory tract; abdominal discomfort, headache, drowsiness, cyanosis with high ingestion
Chronic Effects: Prolonged or repeated exposure may impair oxygen transport in blood
Carcinogenicity: Not listed as carcinogen by IARC, NTP, or OSHA
Other Health Effects: No significant indication of mutagenicity, teratogenicity, or reproductive toxicity at expected occupational levels
Aquatic Toxicity: High concentrations toxic to aquatic life, may cause eutrophication and ecosystem imbalance
Persistence and Degradability: Dissolves readily in water, does not bioaccumulate, persists as nitrate ion
Mobility in Soil: High mobility, may contaminate groundwater
Bioaccumulative Potential: Not expected to bioaccumulate
Other Adverse Effects: Contributes to nitrate pollution, associated with risk of “blue baby syndrome” in infants exposed via drinking water
Waste Treatment Methods: Collect in tightly sealed containers labeled for hazardous waste, dispose of through licensed waste disposal contractors
Disposal of Contaminated Packaging: Triple rinse, puncture, send to approved landfill or hazardous waste processor
Environmental Precautions: Avoid release into sewage systems and natural waterways, follow local and national regulations for oxidizer disposal
Advice: Do not mix with incompatible wastes to prevent reactions or fire hazard
UN Number: 1498
UN Proper Shipping Name: Sodium Nitrate
Transport Hazard Class: 5.1 (Oxidizing substance)
Packing Group: III
Labeling Requirement: Oxidizer label required
Special Precautions for Transportation: Keep containers tightly closed, dry, separate from combustibles and reducing substances; secure against shifting, ensure vehicle is suitable for oxidizer transport
OSHA Status: Not specifically regulated, considered hazardous material
SARA Title III: Subject to reporting under Section 313 (toxic chemical release inventory)
TSCA Status: Listed in TSCA inventory
REACH Registration: Registered under EU REACH regulation
Other Regulations: Subject to environmental release reporting, subject to hazard communication standards; local and international regulations on nitrate content and safety labeling govern usage and disposal
West Ujimqin Banner, Xilingol League, Inner Mongolia, China
