Product Name: KFS Flame Retardant
Manufacturer: KemiSafe Solutions Inc., 89 Shield Drive, Houston, TX 77086, USA
Emergency Phone: +1-800-456-7792
Recommended Use: Additive for textile, plastic, and construction materials
Synonyms: Potassium Fluorosilicate-based Flame Retardant
CAS Number: 16871-90-2
Distribution Contact: sales@kemisafe.com
Classification: Eye irritation, Category 2A; Skin irritation, Category 2; Specific target organ toxicity (single exposure), Category 3
Main Hazards: Causes skin and eye irritation; harmful if inhaled or swallowed; dust may cause respiratory discomfort; prolonged exposure may affect kidney function
Label Elements: Exclamation mark symbol, Signal word: Warning
Hazard Statements: H315: Causes skin irritation; H319: Causes serious eye irritation; H335: May cause respiratory irritation
Precautionary Statements: Avoid breathing dust; wash hands thoroughly after handling; wear protective gloves and eye protection
Potential Health Effects: Irritation to eyes, nose, throat, skin; may aggravate pre-existing respiratory conditions
Main Ingredient: Potassium Fluorosilicate (K2SiF6) – 93-97% by weight, CAS 16871-90-2
Impurities: Trace silicates, <0.5%; Water, <1%
Other Components: Proprietary non-hazardous additives, 1-4%
Molecular Weight: 220.27 g/mol
Physical Form: White crystalline powder
Inhalation: Move exposed person to fresh air; seek medical attention for persistent cough or difficulty breathing
Skin Contact: Remove contaminated clothing; rinse skin well with water; seek medical advice if irritation persists
Eye Contact: Flush eyes with plenty of water for 15 minutes, holding eyelids open; seek medical attention if discomfort continues
Ingestion: Do not induce vomiting; rinse mouth; offer water to drink; seek medical attention immediately
Note for Responders: Use appropriate PPE; provide material safety sheet to doctor if available
Suitable Extinguishing Media: Use water spray, dry chemical, foam, or carbon dioxide for surrounding fires
Specific Hazards: Product is not flammable; decomposition may release toxic hydrogen fluoride gas and silicon compounds
Protective Equipment: Wear self-contained breathing apparatus and full protective clothing
Special Precautions: Avoid inhaling decomposition gases; prevent runoff from entering drains or water sources
Additional Notes: Remaining residue might pose a slip hazard
Personal Precautions: Wear gloves, safety goggles, dust mask or respirator
Spill Response: Sweep up material carefully to minimize dust creation; avoid dry brushing
Environmental Precautions: Prevent entry into sewers, streams, and soil
Small Spills: Vacuum or scoop into containers for disposal
Large Spills: Contain with dikes or barriers; collect and transfer to suitable disposal container
Decontamination: Wash contaminated area thoroughly with water
Safe Handling: Handle in well-ventilated area; avoid contact with skin, eyes, and clothing; do not eat, drink, or smoke while working; assure good workplace hygiene
Storage Conditions: Store in original closed containers, keep dry, store in cool, well-ventilated area away from acids and moisture
Storage Incompatibility: Keep separate from strong acids, bases, oxidizers
Engineering Controls: Use local exhaust ventilation for bulk handling
Packaging Materials: Compatible with polyethylene, HDPE drums, paper bags with lining
Workplace Exposure Limits: ACGIH TLV for fluoride (as F): 2.5 mg/m³ (TWA); no OSHA PEL established for K2SiF6
Respiratory Protection: Use NIOSH-approved dust mask or respirator if airborne dust forms
Skin Protection: Wear chemical-resistant gloves, long-sleeved clothing
Eye Protection: Use safety goggles or full-face shield
Engineering Controls: Employ local ventilation and process enclosure to minimize dust
Hygiene Measures: Wash hands, face, and exposed skin after work; clean contaminated clothing before reuse
Physical State: White, odorless crystalline powder
pH: 5.2 (10% solution in water)
Melting Point: 850°C
Boiling Point: Not applicable (decomposes)
Density: 2.67 g/cm³
Solubility: Slightly soluble in water (0.97 g/L at 20°C)
Vapor Pressure: Not applicable
Odor: None
Flash Point: Not flammable
Decomposition Temperature: Above 800°C
Particle Size: <100 microns
Stability: Stable under standard conditions, stable in dry and cool environments, non-corrosive to most materials under recommended use
Decomposition: Exposure to strong acids liberates toxic hydrogen fluoride gas
Reactive Materials: Reacts with acids, ammonium salts, alkali metals
Hazardous Polymerization: Will not occur
Incompatible Materials: Strong acids, moisture, water (will dissolve slowly)
Special Notes: Avoid dusty conditions; avoid prolonged exposure to humidity
Acute Toxicity: LD50 (oral, rat): 185 mg/kg (as fluoride ion)
Chronic Effects: Long-term exposure may affect dental and bone structure, cause fluorosis
Routes of Exposure: Inhalation, ingestion, skin and eye contact
Symptoms: Irritation, headache, cough, burns
Sensitization: Not classified as sensitizer
Carcinogenicity: No evidence in animal studies for potassium fluorosilicate
Mutagenicity: No mutagenic effects observed in standard tests
Other Effects: Prolonged inhalation can worsen asthma or lung disease
Ecotoxicity: Harmful to aquatic organisms at high concentrations, may accumulate in soil and water with repeated releases
Persistence and Degradability: Inorganic, does not degrade in environment; forms stable fluoride salts
Bioaccumulation: Fluoride ion can build up in plants and aquatic life over time
Mobility: Moderately mobile in soil, slow leaching in waterlogged environments
Aquatic Toxicity: LC50 (fish): 51 mg/L (96h, Oncorhynchus mykiss)
Other Hazards: Spills can lower pH of water locally, affecting aquatic organisms
Waste Handling: Dispose as hazardous waste in accordance with local, regional, state and national regulations
Disposal Methods: Place in sealed, marked containers and send to authorized chemical waste incinerator or landfill; do not discharge to surface water or drains
Reuse/Recycle: Not suitable for recycling; resell only as permitted by regulation
Contaminated Packaging: Wash and dispose of packaging as hazardous solid waste; do not reuse for food or potable water
Disposal Registration: Contact local environmental authorities for approved waste sites
UN Number: UN 2655 (for potassium fluorosilicate-based materials)
DOT Shipping Name: Potassium Fluorosilicate
Hazard Class: 6.1 (Toxic substance)
Packing Group: III
Environmental Hazards: Dangerous to aquatic life in bulk shipments; not a marine pollutant in packaged form
Special Precautions: Avoid release during transit; clearly label as toxic substance
Emergency Guide: ERG 151
TSCA Status: Listed in Toxic Substances Control Act inventory
EU REACH: Registered
SARA Title III: Section 302: Not listed; Section 313: Potassium compounds
California Prop 65: Contains detectable levels of fluoride, which is listed under Prop 65 for developmental toxicity
Label Requirements: Conform to OSHA Hazard Communication Standard, GHS
Other National Inventories: Australia (AICS), Canada (DSL), Japan (ENCS) – listed
Work Restrictions: Restrictions for pregnant/nursing women and children in select jurisdictions
Other Regulations: Consult local/state/federal environmental and safety agencies for workplace requirements
