Material Safety Data Sheet: Calcium Chloride Granules
Identification
Product Name: Calcium Chloride Granules
Chemical Formula: CaCl2
CAS Number: 10043-52-4
Synonyms: Anhydrous calcium chloride, calcium dichloride
Recommended Uses: De-icing, dust control, desiccant, concrete accelerator, food additive
Supplier: Reliable chemical distributors in the US, commonly stocked in industrial and agricultural supply chains
Contact Information: Emergency contact numbers provided directly on commercial packaging by reputable manufacturers
Hazard Identification
GHS Classification: Eye irritation (Category 2A), Skin irritation (Category 2)
Hazard Pictograms: Exclamation mark
Signal Word: Warning
Hazard Statements: Causes serious eye irritation. Causes skin irritation. May cause respiratory tract irritation if dust inhaled.
Precautionary Statements: Wash thoroughly after handling. Wear protective gloves and eye protection. Avoid breathing dust. If in eyes, rinse with water for several minutes.
Composition / Information on Ingredients
Chemical Name: Calcium Chloride
Concentration: 94%-100% by weight (anhydrous granules, trace water possible in hygroscopic product)
Impurities: Magnesium chloride, sodium chloride, potassium chloride (may be present in technical grades in trace amounts)
EC Number: 233-140-8
REACH Registration Number: 01-2119494219-28-xxxx
First Aid Measures
Inhalation: Move person to fresh air. Encourage slow, deep breathing. Call for medical advice if cough or discomfort persists or worsens.
Skin Contact: Wash with plenty of soap and water. Remove contaminated clothing. Seek medical attention if redness or irritation develops.
Eye Contact: Rinse cautiously with water for at least 15 minutes, lifting eyelids. Remove contact lenses if present and easy to do. Get immediate medical attention if irritation or pain persists.
Ingestion: Rinse mouth with water. Drink small amounts of water to dilute. Do not induce vomiting. Seek medical help if symptoms develop or in the event of intentional ingestion.
Fire-Fighting Measures
Flammability: Not combustible. Does not support combustion.
Hazardous Combustion Products: Emits hydrogen chloride gas when reacting with strong acids at fire temperatures. Calcium oxide may form at extremely high temperatures.
Suitable Extinguishing Media: All common media suitable—water spray, foam, dry powder, carbon dioxide. Product does not burn but packaging materials might.
Protective Equipment: Firefighters wear self-contained breathing apparatus and full protective gear. Manage possible caustic run-off with care.
Special Hazards: Contact with metals generates hydrogen gas under some conditions; containment required for runoff to prevent environmental contamination.
Accidental Release Measures
Personal Precautions: Avoid inhaling dust by ventilating spill area adequately. Wear gloves, protective eyewear, and dust mask or respirator.
Spill Response: Sweep or vacuum granules, minimizing dust. Collect in containers for disposal according to local regulations.
Environmental Precautions: Prevent entry into drains, surface, or groundwater. Dilute small accidental spills with large amounts of water and neutralize if necessary.
Cleanup Methods: Wash affected area with water after removal of solids.
Notification Procedures: Report significant spills to local environmental authorities as required.
Handling and Storage
Handling: Use only with adequate ventilation. Minimize generation of dust and avoid contact with eyes or skin. Maintain good industrial hygiene practices—wash hands after use.
Safe Storage: Keep containers tightly sealed. Store in dry, cool, well-ventilated places, away from moisture and incompatible materials such as strong acids or metals.
Incompatible Materials: Strong acids, zinc, bromine trifluoride, reacts with water to generate heat.
Storage Conditions: Bulk storage silos or drums, lined or corrosion-resistant; protect from conditions causing deliquescence (absorption of atmospheric moisture).
Exposure Controls and Personal Protection
Exposure Limits: OSHA PEL (Particulates Not Otherwise Regulated): 15 mg/m3 total dust, 5 mg/m3 respirable. No established limits specifically for calcium chloride.
Engineering Controls: Local exhaust ventilation, general mechanical ventilation to keep airborne dust below recommended limits.
Personal Protective Equipment: Nitrile or PVC gloves, safety goggles, long sleeves, NIOSH-approved dust mask or respirator if dust levels exceed occupational exposure limits.
Hygiene Measures: Do not eat, drink, or smoke when handling. Wash hands, forearms, and face thoroughly after using product, especially before breaks or meals.
Physical and Chemical Properties
Appearance: White or off-white granules or flakes
Odor: Odorless
pH: Approximately 8-10 (10% solution in water)
Melting Point: 782°C (1,440°F)
Boiling Point: Decomposes above 1,600°C
Solubility: Highly soluble in water, generating exothermic reaction
Vapor Pressure: Not applicable (non-volatile solid)
Vapor Density: Not applicable
Relative Density: 2.15 (water = 1)
Flash Point: Not relevant
Partition Coefficient: Not applicable, inorganic salt
Other Data: Deliquescent; absorbs moisture from air.
Stability and Reactivity
Chemical Stability: Stable under recommended conditions. Highly hygroscopic, absorbs water from air and forms solutions.
Reactivity: Vigorous reaction with water releases heat. Reacts with zinc, strong acids, and some organic compounds.
Incompatible Materials: Strong acids, metals such as zinc and sodium, bromine trifluoride.
Hazardous Decomposition: Calcium oxide and hydrogen chloride gas at high temperature.
Polymerization: Not expected under normal conditions.
Toxicological Information
Acute Toxicity: Oral LD50 in rats: 1,000 mg/kg to 1,900 mg/kg (moderately toxic if swallowed in large amounts); causes irritation to mouth, throat, and gastrointestinal system.
Inhalation: Dust may cause mild respiratory tract irritation, coughing, and sore throat.
Skin Contact: Irritation possible after prolonged or repeated contact; no evidence of systemic toxicity in humans from occupational exposure.
Eye Contact: Causes severe irritation, redness, pain, possible corneal injury.
Chronic Effects: No carcinogenic, reproductive, or mutagenic effects identified.
Symptoms of Overexposure: Nausea, vomiting, abdominal pain, burning of skin or eyes, coughing.
Ecological Information
Ecotoxicity: Toxic to aquatic plants and invertebrates at high concentrations. Large releases increase salinity and negatively affect freshwater ecosystems.
Mobility: Highly soluble, migrates easily in water and moist soils.
Persistence and Degradability: Not inherently degradable (inorganic compound), persists in the environment.
Bioaccumulation: Does not bioaccumulate. Readily dissociates to calcium and chloride ions.
Other Hazards: Overdose can disrupt soil and water chemistry, harming vegetation and aquatic life if not managed responsibly.
Disposal Considerations
Product Waste: Dispose as non-hazardous solid waste in accordance with local, state, and federal guidelines. Small amounts diluted with water can enter sanitary systems if permitted.
Container Management: Empty packaging can be recycled or landfilled after thorough cleaning. Do not reuse containers for food or personal items.
Environmental Precautions: Prevent undiluted product from reaching aquatic environments or groundwater.
Waste Codes: Not classified as hazardous waste under RCRA in the US, unless contaminated with hazardous substances.
Transport Information
UN Number: Not classified as a dangerous good for transport according to international regulations.
Proper Shipping Name: Calcium Chloride
Hazard Class: Not regulated
Packing Group: Not applicable
Marine Pollutant: No
Special Precautions: Secure loads to prevent shift and avoid moisture contact during transport. Avoid contact with incompatible cargo such as acids or alkalis.
Regulatory Information
US TSCA: Listed on the Toxic Substances Control Act inventory
OSHA: General industry standards for nuisance dust apply
SARA Title III: Not reportable under Sections 302, 304, 313
EU REACH: Registered; not classified as a substance of high concern
Canada DSL/NDSL: Listed
Label Requirement: Container and shipping label to include hazard pictogram, signal word, hazard, and precautionary statements in compliance with GHS.
