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Material Safety Data Sheet (MSDS) for Fenvalerate

Identification

Product Name: Fenvalerate
Chemical Name: Cyano(3-phenoxyphenyl)methyl 4-chloro-alpha-(1-methylethyl)benzeneacetate
CAS Number: 51630-58-1
Recommended Use: Insecticide for agricultural applications
Manufacturer Information: Registered manufacturers and distributors with emergency contact numbers available on product labels
Emergency Contact: Refer to sources such as poison control centers or local emergency numbers provided in packaging

Hazard Identification

Classification: Moderately hazardous; classified as Class II by WHO
Acute Effects: Irritation to eyes and skin, central nervous system effects including dizziness, headache, and ataxia following exposure
Chronic Effects: Long-term contact can cause dermatitis; animal studies suggest possible reproductive toxicity
Environmental Hazards: Highly toxic to aquatic life including fish and invertebrates; can persist in soil and water
Pictograms/Symbols: Exclamation mark (GHS07), Environment (GHS09)
Signal Word: Warning

Composition / Information on Ingredients

Active Ingredient: Fenvalerate 92-96%
Solvents & Carriers: Xylene or hydrocarbon solvents (varies by formulation), emulsifiers, and surfactants
Impurities: May contain isomers and minor technical byproducts; specific formulation details referenced by batch
Other Ingredients: Nonhazardous materials, proprietary additives up to a few percent by weight

First Aid Measures

Inhalation: Move person to fresh air and keep comfortable for breathing; medical attention recommended if symptoms persist
Skin Contact: Remove contaminated clothing; wash skin thoroughly with soap and water—pay attention to fingernails and folds
Eye Contact: Rinse eyes gently with plenty of water for at least 15 minutes; seek medical advice if any irritation remains
Ingestion: Do not induce vomiting; rinse mouth; seek immediate medical treatment, giving health professionals product identification
Advice for Physician: Symptomatic and supportive treatment, avoid use of adrenergic amines in case of respiratory distress

Fire-Fighting Measures

Suitable Extinguishing Media: Foam, dry chemical powder, or carbon dioxide; for small fires use sand earth
Unsuitable Media: Avoid direct water jets as these may spread contamination
Hazardous Combustion Products: Carbon monoxide, carbon dioxide, hydrogen chloride, possible toxic fumes
Protective Equipment: Wear self-contained breathing apparatus and chemical-protective clothing
Special Procedures: Prevent runoff from entering water sources or drains; cool containers exposed to flame with water spray

Accidental Release Measures

Personal Precautions: Avoid direct skin or eye contact, avoid inhalation of vapors or mists; wear chemical-resistant gloves, goggles, and protective clothing
Environmental Precautions: Block entry to drains, sewers, or watercourses; collect spillage to prevent widespread contamination
Containment and Cleanup: Confine spill with inert absorbent like sand or earth, shovel into labeled drums for disposal, ventilate area thoroughly; keep unnecessary people away until cleanup is complete
Methods for Disposal: Refer to local regulations; handle collected materials as hazardous waste

Handling and Storage

Handling: Handle outdoors or in well-ventilated area; avoid ingestion, inhalation, and direct contact; keep containers tightly closed when not in use
Hygiene Practices: Wash hands and forearms after handling; do not eat, drink, or smoke during use
Storage: Store in cool, dry place away from direct sunlight, food, animal feed, or incompatible materials such as oxidizers or acids; ensure secure storage to prevent accidental or unauthorized access
Container Compatibility: Keep in original containers or compatible HDPE/steel drums with appropriate labeling

Exposure Controls and Personal Protection

Occupational Exposure Limits: No established OSHA or ACGIH Threshold Limit Value for Fenvalerate; minimize exposure as much as possible
Engineering Controls: Use local exhaust ventilation to control airborne concentration; maintain eye wash stations and safety showers
Personal Protective Equipment: Gloves (nitrile, neoprene), chemical goggles, face shield, protective clothing (coveralls, boots), respiratory protection (P2 or equivalent filter) where airborne dust or vapor cannot be avoided
Environmental Exposure Controls: Take actions to prevent pesticide or dust from contaminating air and groundwater; treat runoff according to local environmental guidelines

Physical and Chemical Properties

Appearance: Clear amber to brown oily liquid (technical grade) or off-white crystalline solid (pure state)
Odor: Mild aromatic
pH: Not applicable for solid; slightly acidic in emulsifiable concentrate
Melting Point: 58-59°C (pure)
Boiling Point: Decomposes before boiling
Flash Point: 150°C (closed cup, technical concentrate)
Solubility: Practically insoluble in water; soluble in organic solvents such as xylene, acetone, hexane
Vapor Pressure: 0.0003 mPa at 20°C
Density: 1.2-1.3 g/cm³
Partition Coefficient (Log Kow): 6.4
Stability: Stable at room temperature in closed containers, but decomposes on prolonged exposure to light and air

Stability and Reactivity

Chemical Stability: Remains stable under normal storage conditions; light and moisture accelerate breakdown
Conditions to Avoid: Excess heat, direct sunlight, strong acids, and oxidizing agents
Incompatible Materials: Strong acids and oxidizers, bases
Hazardous Decomposition Products: Carbon oxides, hydrogen cyanide, chlorine, and other toxic gases generated at high temperature
Polymerization: Does not undergo hazardous polymerization under prescribed conditions

Toxicological Information

Acute Toxicity (Oral): LD50 (rat): 430-800 mg/kg
Acute Toxicity (Dermal): LD50 (rat): >2000 mg/kg
Inhalation: LC50 (rat, 4 hr): >2.1 mg/L (aerosol)
Skin/Eye Irritation: Causes moderate irritation by direct contact
Sensitization: Can trigger allergic skin response in sensitive individuals
Chronic Exposure: Animal studies show liver and kidney changes, weight loss in high dose, not confirmed as carcinogen by IARC or EPA
Target Organs: Nervous system, skin, eyes

Ecological Information

Toxicity to Fish: LC50 (96 hrs) for rainbow trout: 0.002-0.008 mg/L
Toxicity to Aquatic Invertebrates: LC50 (48 hrs) for daphnia: 0.011 mg/L
Toxicity to Birds: LD50 for mallard ducks: > 4000 mg/kg
Toxicity to Bees: LD50 (oral): 0.12 µg/bee; highly toxic
Persistence and Degradability: Slow to degrade in soil and water; half-life ranges from weeks to months depending on conditions
Bioaccumulation: High potential, accumulates in fatty tissues of organisms
Mobility: Low water solubility leads to binding with sediments and organic matter

Disposal Considerations

Product Disposal: Treat as hazardous waste; incinerate in an approved facility or dispose through licensed chemical waste contractor
Contaminated Packaging: Rinse thoroughly, puncture, triple rinse, then dispose of or recycle in accordance with local regulations; do not reuse packaging for other purposes
Precautions: Avoid contamination of water supplies, soil, and drains; never burn product or package in open air
Regulations: Follow national legislation and guidelines for the management of pesticide wastes

Transport Information

UN Number: 3352
Proper Shipping Name: Pyrethroid pesticide, liquid, toxic
Hazard Class: 6.1 (toxic substance)
Packing Group: III
Labelling: Keep containers closed and upright during transport; label according to IMDG, IATA and DOT requirements
Special Precautions: Avoid vibration, heating, and mechanical shock during loading and transport; mark shipments with relevant hazard symbols

Regulatory Information

EU Regulations: Registered under Regulation (EC) No 1107/2009 (Plant Protection Products), classified as hazardous according to Regulation (EC) No 1272/2008 (CLP)
US Regulations: Subject to FIFRA (Federal Insecticide, Fungicide, and Rodenticide Act), SARA 313 reporting, and TSCA Inventory
Other Countries: Subject to national pesticide registration and use controls, with restrictions near water bodies and for professional use only in some regions
Labelling Requirements: Hazard symbols, precautionary statements, and safety advice per local regulatory authority
Workplace Requirements: SDS and safe handling information accessible to users, adequate training for staff who handle, store, or transport product
Community Right-to-Know: Communities and workers have a right to information about possible hazards, symptoms of exposure, and emergency treatment