Material Safety Data Sheet: Magnesium Chloride Powder

Identification

Product Name: Magnesium Chloride Powder
Chemical Name: Magnesium Chloride
Synonyms: Mag Chloride, E511, Magnesium Dichloride
CAS Number: 7786-30-3
Recommended Use: De-icer, dust control, food additive, supplements, industrial applications
Manufacturer Contact: Name, full address, phone, and emergency telephone number

Hazard Identification

Classification: Irritant to eyes and skin, not classified as hazardous for transportation
Hazard Pictograms: Exclamation mark (GHS07)
Signal Word: Warning
Hazard Statements: Causes mild skin and eye irritation. Large quantities can act as a laxative if ingested.
Precautionary Statements: Avoid eye and skin contact, use personal protection, wash hands thoroughly afterwards.
Routes of Exposure: Eyes, skin, ingestion, inhalation of dust particles.

Composition / Information on Ingredients

Substance: Magnesium Chloride
Formula: MgCl₂
Molecular Weight: 95.21 g/mol
Concentration: Ranges from 98% to 100% pure depending on grade
Impurities: Trace amounts of Calcium Chloride, Sodium Chloride, moisture depending on purity.

First Aid Measures

Eye Contact: Flush with plenty of water for at least 10 minutes; seek medical attention if irritation persists.
Skin Contact: Remove contaminated clothing, wash affected area with water. If irritation occurs, consult physician.
Inhalation: Remove to fresh air. If breathing difficulties occur, get medical attention.
Ingestion: Rinse mouth, drink water, do not induce vomiting. Seek medical attention for large amounts or if symptoms develop.
Symptoms: Redness, itching, discomfort, mild gastrointestinal distress.

Fire-Fighting Measures

Suitable Extinguishing Media: Use water spray, dry chemical, foam, or carbon dioxide.
Special Hazards: Non-combustible, decomposes at high temperatures releasing HCl and MgO fumes.
Protective Equipment: Firefighters should wear self-contained breathing apparatus and protective clothing.
Advice for Firefighters: Avoid inhalation of decomposition gases, move containers from fire area if safe to do so.

Accidental Release Measures

Personal Precautions: Use eye and skin protection, avoid breathing dust, isolate spill area.
Cleanup Procedures: Sweep up and collect into suitable container. Avoid creating dust, clean thoroughly with water.
Environmental Precautions: Prevent material from entering watercourses or soil in large quantities, due to impact on aquatic life and potential for localized salinization.

Handling and Storage

Handling: Use in well-ventilated areas, keep containers tightly closed. Wear suitable gloves and safety glasses. Avoid dust generation. Wash after handling.
Storage: Keep in cool, dry, well-ventilated area, away from moisture and incompatible substances such as strong oxidizers. Store in original or compatible corrosion-resistant containers. Keep away from food and drink.

Exposure Controls and Personal Protection

Exposure Limits: No occupational exposure limits established specifically for Magnesium Chloride. Keep dust below nuisance dust limits set by regulatory agencies.
Engineering Controls: Ensure adequate ventilation or use local exhaust to minimize dust.
Personal Protection: Wear safety glasses with side shields, dust mask or respirator (P2 or N95), chemical-resistant gloves, and protective clothing as needed.
Hygiene Measures: Wash hands before eating, drinking, smoking, and after handling materials.

Physical and Chemical Properties

Appearance: White to off-white crystalline powder or flakes
Odor: Odorless
pH: About 7 (5% solution)
Melting Point: 714°C
Boiling Point: Decomposes above 1412°C
Solubility: Highly soluble in water (approx. 167g/100ml at 20°C)
Density: 2.32 g/cm³
Vapor Pressure: Negligible at standard conditions
Other Properties: Hygroscopic (absorbs moisture from the air), non-flammable

Stability and Reactivity

Chemical Stability: Stable under recommended storage conditions. Absorbs moisture from air, forms solution if exposed to humidity.
Reactivity: Reacts with strong oxidizers, acids, and may corrode some metals upon prolonged contact.
Decomposition Products: At very high temperatures generates hydrogen chloride gas and magnesium oxide.
Conditions to Avoid: Exposure to moisture, extreme heat, incompatible materials.

Toxicological Information

Acute Toxicity: Low oral and inhalation toxicity, large ingestion may cause gastrointestinal discomfort.
Irritation: Mildly irritating to eyes, skin, respiratory tract.
Chronic Effects: No evidence of carcinogenicity, mutagenicity, or reproductive toxicity.
Sensitization: Not known to cause skin sensitization.
Symptoms: In large doses, diarrhea, abdominal cramps, electrolyte imbalance.

Ecological Information

Ecotoxicity: Can increase salinity in aquatic environments, possibly harmful to freshwater organisms in large concentrations.
Persistence and Degradability: Highly soluble, dissociates in water, not bioaccumulative.
Mobility: Spreads readily through soil and water.
Bioaccumulation: Low potential.
Other adverse effects: May affect soil structure and plant growth if applied in excessive amounts.

Disposal Considerations

Waste Treatment: Dispose of in accordance with local, regional, national laws. Avoid releasing large amounts into sewers or waterways.
Disposal Containers: Use corrosion-resistant or original containers.
Environmental Precautions: Dilute and flush small quantities with plenty of water. Large amounts require consultation with environmental authorities.

Transport Information

UN Number: Not classified as hazardous for transport
UN Proper Shipping Name: Magnesium Chloride Powder
Transport Hazard Class: Not regulated
Packing Group: Not classified
Special Precautions: Protect from moisture and incompatible substances during transport.

Regulatory Information

Global Inventory Listings: Product appears on TSCA (USA), EINECS (EU), DSL (Canada), AICS (Australia), ENCS (Japan), and other local registries.
Labeling Requirements: Follows Globally Harmonized System (GHS), minimum requirements for workplace safety labeling.
National Regulations: Meets general chemical safety rules set by OSHA (USA), REACH (EU), WHMIS (Canada) and other regional agencies.
Restrictions: No major restrictions for industrial use, monitor environmental discharge limits.
SDS Revision Date: Refer to supplier or responsible person for last update.