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Product Name: Potassium Sulphate
CAS Number: 7778-80-5
SYNONYMS: Sulphate of Potash, Dipotassium Sulphate
Recommended Use: Fertilizer, laboratory reagents, industrial applications
Supplier: Standard fertilizer and chemical distributors globally
Contact Details: Refer to your supply documentation for current emergency phone numbers and addresses for reporting incidents or requesting additional safety information
GHS Classification: Not classified as hazardous under GHS
Main Hazards: Dust can irritate eyes, skin, and respiratory tract; massive inhalation of dust may aggravate pre-existing lung conditions
Physical Hazards: Not combustible, but decomposes on strong heating
Environmental Hazards: Toxicity to aquatic life at high concentrations has been observed
Signal Word: None required for most handling scenarios
Chemical Name: Potassium Sulphate
Common Formula: K₂SO₄
Concentration: Typically above 99% by weight in commercial forms
Impurities: Minor impurities possible, such as magnesium, calcium, sodium salts, mostly below 1%
Other Ingredients: None of acute toxicity or requiring reporting under typical chemical safety regulations
Inhalation: Move affected individual to fresh air, provide help for easier breathing if breathing is difficult, consult medical personnel if symptoms persist
Skin Contact: Remove contaminated clothing, flush skin with clean water and mild soap, seek further care only if irritation develops or persists
Eye Contact: Rinse eyes with water for a minimum of 15 minutes, lifting upper and lower eyelids, consult a medical professional if eye irritation or pain continues
Ingestion: Rinse mouth with water, do not induce vomiting, seek medical advice if large quantities are consumed or if symptoms arise
Suitable Extinguishing Media: Use water spray, foam, or carbon dioxide for surrounding fires, as Potassium Sulphate itself does not burn
Unsuitable Media: No specific restrictions recognized
Hazardous Combustion Products: Sulfur oxides and potassium oxides can form during strong combustion or decomposition
Protective Equipment For Fire-Fighters: Wear self-contained breathing apparatus if involved in fire; avoid inhaling gas, fume, or dust
Special Precautions: Prevent run-off entering sewers and watercourses to avoid environmental contamination
Personal Precautions: Dust mask, appropriate gloves, and goggles recommended to prevent irritation
Environmental Precautions: Prevent large spills from entering drains, ditches, or water bodies
Cleanup Methods: Scoop up or sweep spilled material, avoid raising dust, place waste in labeled container and dispose according to local regulations
Handling Broken Bags: Use care to minimize dust creation, clean spilled residues thoroughly after collection
Handling: Use with adequate local ventilation, minimize dust creation, avoid contact with eyes and prolonged or repeated contact with skin
Storage Conditions: Store in cool, dry, and well-ventilated place in tightly closed containers or sealed bags
Separation from Incompatibles: Keep away from acids and reducing agents
Bulk Storage: Keep off the floor on pallets, away from direct sunlight and sources of moisture, prevent condensation inside packages
Exposure Limits: No specific occupational exposure limits established; treat as nuisance dust (typically 10 mg/m³ for inhalable particulate, 3 mg/m³ for respirable particulate)
Engineering Controls: Provide local exhaust or general ventilation as needed to control airborne dust
Personal Protection: Dust mask or respirator in dusty conditions, safety goggles for eye protection, gloves for skin protection, protective clothing if extended exposure is expected
Hygiene Measures: Wash hands and face thoroughly after handling, do not eat, drink, or smoke while using this product
Appearance: White crystalline solid or granules
Odor: Odorless
pH (10% Solution): Approximately 7
Melting Point: Decomposes above 1067°C
Solubility in Water: About 120 g/L at 25°C
Vapor Pressure: Negligible
Density: 2.66 g/cm³
Partition Coefficient (n-octanol/water): Not applicable
Evaporation Rate: Not volatile
Boiling Point: Not applicable (decomposes)
Chemical Stability: Stable under recommended storage and handling conditions
Reactivity: Very low reactivity with most common materials
Possible Hazardous Reactions: Reacts with strong acids to produce toxic sulfur oxides
Incompatible Materials: Acids, strong reducing agents
Hazardous Decomposition Products: Sulfur oxides, potassium oxides if product is strongly heated or involved in fire
Acute Toxicity: LD50 (oral, rat): greater than 10,000 mg/kg; considered of low toxicity to humans
Skin/Eye Irritation: Dust may cause mild irritation
Respiratory Irritation: Dust can provoke throat and lung irritation in sensitive individuals
Chronic Effects: Not recognized as causing chronic health effects from expected exposure
Carcinogenicity, Mutagenicity, Reproductive Effects: No evidence indicating carcinogenic or mutagenic effects; not classified as reprotoxic
Ecotoxicity: Large quantities in waterways can cause harm to aquatic plants and invertebrates due to potassium ion and sulfate concentration
Persistence and Degradability: Product dissolves in water, does not bioaccumulate or persist as particulate
Mobility: High in soil and water
Bioaccumulation: Unlikely due to rapid dissolution
Other Adverse Effects: Excessive nutrient loading through runoff can disturb aquatic ecosystems (eutrophication risk)
Waste Handling: Collect and reuse if possible; suitable for landfill disposal in accordance with local, regional, and national requirements
Packaging Disposal: Empty bags or containers should be completely emptied and offered for recycling or disposal according to official regulations
Sewage Disposal: Avoid discharge into sewers or water systems; notify relevant authorities if significant release occurs
Special Precautions: Keep away from foodstuffs and animal feed during disposal processes
UN Number: Not classified as hazardous for transport
Transport Hazard Class: Not restricted, not regulated as dangerous goods under US DOT, IATA, IMDG, or EU ADR regulations
Proper Shipping Name: Potassium Sulphate
Packing Group: Not assigned
Environmental Hazards: Not considered a marine pollutant
Special Transport Precautions: Prevent moisture ingress, ensure packaging is not damaged during transit
US Regulations: Not listed under SARA Title III Section 313, not subject to reporting; included on TSCA inventory
EU Regulations: Registered under REACH; not classified as hazardous under CLP Regulation (EC) No 1272/2008
Other National Inventories: Listed in Australia AICS, Canada DSL, Japan ENCS, Korea ECL, Philippines PICCS, China IECSC
Workplace Requirements: Observe chemical hygiene standards for dust, inform workers of risks and safe handling practices, keep safety data sheet accessible
Labeling: Not required to display hazard pictograms or signal words for most retail and industrial instances
