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Material Safety Data Sheet: Sodium Carbonate

Identification

Product Name: Sodium Carbonate
Synonyms: Soda Ash, Washing Soda
Chemical Formula: Na2CO3
CAS Number: 497-19-8
Recommended Use: Cleaning agent, water softener, pH regulator, manufacturing glass and detergents
Supplier Details: Company name, address, emergency contact number, and website
Emergency Phone Number: National Poison Control, local emergency contacts, supplier's after-hours phone line

Hazard Identification

Classification: Eye irritant, skin irritant
GHS Label Elements: Exclamation mark symbol, Signal word "Warning"
Hazard Statements: Causes serious eye irritation, may cause mild skin irritation
Precautionary Statements: Wash hands after handling, wear protective gloves and eye protection, avoid breathing dust
Potential Health Effects: Contact causes redness and pain in eyes and skin, ingestion can trigger irritation of digestive tract, inhalation leads to coughing and sore throat
Environmental Impacts: Material elevates pH in aquatic systems, large spills bear risk to aquatic species

Composition / Information on Ingredients

Chemical Name: Sodium Carbonate
Concentration: 99-100% by weight
Impurities: Possible traces of sodium bicarbonate, sodium chloride
Molecular Weight: 105.99 g/mol

First Aid Measures

Eye Contact: Rinse eyes with clean water for at least fifteen minutes, hold eyelids apart, seek medical advice if irritation persists
Skin Contact: Remove contaminated clothing, wash exposed skin with soap and water, consult doctor if symptoms develop
Inhalation: Move person to fresh air, seek medical attention for symptoms like cough or difficulty breathing
Ingestion: Rinse mouth, drink water, seek immediate medical help if feeling unwell or after swallowing large amounts
Advice to Physicians: Treat symptomatically, monitor for signs of irritation or systemic effects

Fire-Fighting Measures

Suitable Extinguishing Media: Use agents suitable for surrounding materials (product itself is not flammable)
Hazardous Combustion Products: Can produce sodium oxides in extreme heat
Protective Equipment for Firefighters: Standard turnout gear and self-contained breathing apparatus
Additional Information: Sodium carbonate suppresses fire by breaking chain reactions in flames, does not support combustion, cool containers with water spray to prevent rupture from heat

Accidental Release Measures

Personal Precautions: Wear gloves, protective clothing, and goggles to avoid contact
Environmental Precautions: Contain large spills to prevent contamination of water runoff, avoid release to natural surface water
Clean-up Methods: Sweep or scoop up spills into labeled containers, avoid creating dust, wash spill site after pickup
Emergency Procedures: Evacuate unnecessary personnel, use local exhaust ventilation to clear dust, dispose of waste through licensed contractors

Handling and Storage

Precautions for Handling: Use in well-ventilated area, minimize generation of dust, avoid contact with eyes and skin, wash hands after use, do not eat or drink while handling
Storage Conditions: Store in tightly sealed containers, cool, dry, and well-ventilated place, segregated from acids and moisture
Incompatibilities: Avoid storage near strong acids, aluminum, or other reactive metals
Special Requirements: Install spill control and eyewash fountains in areas where material is used heavily

Exposure Controls and Personal Protection

Occupational Exposure Limits: No OSHA PEL or ACGIH TLV assigned, but general dust limits apply (10 mg/m³ total dust, 3 mg/m³ respirable dust)
Engineering Controls: Use local exhaust to reduce airborne dust, ensure eye wash stations and showers are available
Personal Protective Equipment: Chemical-resistant gloves (nitrile or PVC), safety goggles or face shield, lab coat or apron, dust respirator for heavy use or cleaning
Hygiene Measures: Wash hands before breaks and after work, avoid sharing contaminated equipment, remove contaminated clothing before eating or leaving work area

Physical and Chemical Properties

Appearance: White, crystalline powder or granular solid
Odor: Odorless
Odor Threshold: Not applicable
pH: About 11 for 1% solution
Melting Point: 851°C (decomposes)
Boiling Point: Not applicable
Solubility in Water: Readily soluble, about 215 g/L at 20°C
Relative Density: 2.53 at 20°C
Vapor Pressure: Not volatile
Vapor Density: Not applicable
Partition Coefficient (n-octanol/water): Not determined
Evaporation Rate: Not applicable
Explosive Properties: Not explosive
Oxidizing Properties: Not oxidizing

Stability and Reactivity

Chemical Stability: Stable under recommended storage conditions
Reactivity: Reacts with acids to form carbon dioxide gas, can corrode aluminum and zinc
Hazardous Reactions: Contact with acids releases CO2, may react violently with strong acids
Conditions to Avoid: Exposure to moisture, strong acids, and high temperatures
Hazardous Decomposition Products: Sodium oxide, carbon dioxide from reaction with acids

Toxicological Information

Acute Toxicity: Ingestion and inhalation of large amounts can cause irritation to mouth, throat, stomach, coughing, sneezing, and shortness of breath
Skin Corrosion/Irritation: Mild to moderate irritation if contact is prolonged
Serious Eye Damage/Irritation: Causes severe irritation, possible corneal injury
Respiratory Sensitization: Dust can irritate the respiratory tract
Chronic Effects: Prolonged or repeated exposure may lead to dermatitis
Carcinogenicity: Not classified as a carcinogen by IARC, NTP, or OSHA
Mutagenicity and Reproductive Toxicity: No evidence of genetic or reproductive effects reported in laboratory studies

Ecological Information

Ecotoxicity: High concentrations cause increased pH in water, toxic to aquatic organisms over pH 9.5
Persistence and Degradability: Readily dissociates to sodium and carbonate ions in environment, not persistent
Bioaccumulation: Does not bioaccumulate
Mobility in Soil: High solubility enhances mobility through soil to groundwater
Other Adverse Effects: Discharge to environment can disrupt aquatic habitats, should be diluted before disposal

Disposal Considerations

Disposal Methods: Use licensed waste disposal contractor, dilute small amounts with copious water, follow local and national regulations
Packaging Disposal: Decontaminate and recycle or dispose as non-hazardous industrial waste
Precautions for Disposal: Avoid direct discharge to surface water or sewers, do not mix with incompatible substances

Transport Information

UN Number: Not regulated for transport
UN Proper Shipping Name: Not classified as dangerous
Transport Hazard Class: Not applicable
Packing Group: Not applicable
Environmental Hazards: Not a marine pollutant
Special Precautions for Transport: Transport in clean, sealed, and labeled containers, avoid moisture contact during transit, follow good hygiene practices in loading/unloading

Regulatory Information

TSCA: Listed in US Toxic Substances Control Act Inventory
OSHA: Not hazardous under OSHA Hazard Communication Standard
EU Regulations: Classified as irritant, requires risk and safety phrases, subject to European REACH regulations
Canada DSL/NDSL: Listed
Other International Regulations: Follow the workplace regulations specific to your region
Label Requirements: Proper hazard labeling, precautionary statement, name and address of supplier
Chemical Safety Assessment: Required under REACH, follow procedures outlined for workplace risk management