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Chemical Name: Pyriproxyfen
Trade Names: NyGuard, Sumilarv, Admiral, others
Recommended Uses: Insect growth regulator for pest control, especially in agriculture, public health, and horticulture
CAS Number: 95737-68-1
Manufacturer: Names can include Sumitomo Chemical, MGK, OHP, among others
Emergency Contact: Refer to supplier information on packaging; most major chemical companies have 24/7 contact numbers for spill, fire, or health events
Synonyms: 4-Phenoxyphenyl (RS)-2-(2-pyridyloxy)propyl ether
Product Type: Liquid concentrate, wettable powder, granule, and aerosol preparations
UN Number: Not classified as dangerous goods for transport under most regulatory agencies
GHS Classification: Eye Irritation Category 2, Aquatic Chronic Category 1
Signal Word: Warning
Hazard Statements: Causes serious eye irritation, toxic to aquatic life with long-lasting effects
Pictograms: Exclamation mark, Environment hazard
Risk Phrases: Irritating to eyes, possible skin irritation with repeated contact, evidence for acute oral and dermal toxicity in animals is low
Precautionary Statements: Avoid release into the environment, wash hands thoroughly after handling, wear protective gloves, goggles, and suitable clothing
Pyriproxyfen: 10%–95% (active ingredient concentration depends on product formulation)
Other Ingredients: Inert carriers, solvents (such as xylene or water), surfactants, emulsifiers, stabilizers, anti-caking agents; specific mixture breakdown available in product-specific datasheets
Impurities: Trace solvent residues, byproducts from manufacturing under regulatory thresholds
Inhalation: Move to fresh air, rest, and seek medical advice if irritation or respiratory symptoms develop
Skin Contact: Remove contaminated clothing, wash skin thoroughly with soap and water, see a doctor for persistent redness or pain
Eye Contact: Rinse cautiously with water for 15 minutes, remove contact lenses if possible, continue rinsing, seek medical attention if irritation persists
Ingestion: Rinse mouth, call medical services or poison control for guidance, do not induce vomiting unless instructed by a medical professional
Symptoms to Watch: Eye redness, skin irritation, stomach upset, headache, or cough in severe accidental overexposure
Suitable Extinguishing Media: Use foam, dry chemical, carbon dioxide, or water spray for small fires
Unsuitable Media: Avoid direct water stream for burning liquid, which may spread fire
Hazardous Combustion Products: Oxides of carbon, nitrogen compounds, irritating smoke or fumes
Special Protective Equipment: Firefighters need self-contained breathing apparatus and chemical-resistant clothing
Other Information: Remove containers from fire area when safe, prevent runoff from entry to drains
Personal Precautions: Evacuate unnecessary personnel, ventilate area, avoid breathing vapors or dusts, wear protective clothing, gloves, eye protection, and mask
Environmental Precautions: Prevent runoff to sewers, surface water, or soil; contain spill using sand, earth, or absorbent material
Cleanup Methods: Scoop or sweep spills, transfer to labeled waste container for disposal, wash area with water and detergent, collect rinsate for further disposal
Disposal: Waste collected must comply with local regulations for pesticide handling
Handling: Avoid ingestion, inhalation, and contact with skin and eyes; keep containers closed when not in use; handle in well-ventilated areas; do not eat, drink, or smoke in work area; wash hands and face before breaks and after use
Storage: Store in original containers, tightly secured, out of reach of children and animals; keep away from direct sunlight, food, feed, and water sources; maintain temperature stability between 0°C and 40°C; do not store with oxidizers or acids
Exposure Limits: Occupational exposure limits not formally established; follow general workplace hygiene standards for pesticides
Engineering Controls: Ensure good ventilation and air movement in application and mixing areas
Protective Equipment: Wear long-sleeved shirt, long pants, chemical-resistant gloves (nitrile or similar), boots, goggles or safety glasses, and respiratory mask when necessary
Environmental Controls: Prevent product from entering drains or watercourses
Appearance: Off-white to pale yellow (pure), varies by formulation
Physical State: Solid (pure), powder, granule, or liquid (formulated)
Odor: Weak, faintly aromatic
Melting Point: 45–50°C (pure)
Boiling Point: Decomposes before boiling
Vapor Pressure: Low (2.5 × 10⁻⁷ Pa at 20°C for pure compound)
Water Solubility: 0.367 mg/L (25°C)
Partition Coefficient (log Kow): 5.37
pH: Stable at pH 4–9
Density: Approx. 1.15 g/cm³ for technical grade
Flash Point: Not applicable for solid pure substance, above 100°C for emulsifiable concentrates
Chemical Stability: Stable under recommended storage and use conditions
Possibility of Hazardous Reactions: Not prone to hazardous polymerization
Conditions to Avoid: Excessive heat, open flames, strong acids, and strong oxidizing agents
Incompatible Materials: Strong acids, alkalis, oxidizers
Hazardous Decomposition Products: Carbon oxides, nitrogen oxides, toxic fumes on thermal decomposition
Acute Toxicity: Oral LD50 (rat): >5,000 mg/kg (low toxicity); Dermal LD50 (rat): >2,000 mg/kg; Inhalation LC50 (rat, 4h): >1.79 mg/L
Eye Effects: May cause moderate eye irritation
Skin Effects: Low risk, though repeated or prolonged skin contact may cause irritation
Sensitization: Not a confirmed dermal sensitizer
Carcinogenicity: Not listed as carcinogenic by IARC, NTP, OSHA
Reproductive Effects: No evidence for reproductive risk in animal studies up to regulatory dose levels
Chronic Effects: High, chronic exposure in animal tests showed minor liver and blood system changes at dose well above human exposures
Ecotoxicity: Highly toxic to aquatic invertebrates and fish, including Daphnia and rainbow trout
Persistence and Degradability: Not readily degradable in water, moderate degradation in soil under sunlight (half-life 6–30 days)
Bioaccumulation: High potential based on log Kow; evidence of uptake in aquatic organisms
Mobility in Soil: Tends to bind to soil, low mobility
Other Adverse Effects: May impact crustaceans and some aquatic insect populations at low environmental concentration
Product Disposal: Collect unused product, do not pour down drains or sewers; incinerate in licensed facility; consult local and national regulations
Container Disposal: Triple rinse, puncture, and render container unusable, then dispose of per local pesticide container recycling or waste programs
Other Recommendations: Do not transport with food, feed, medical supplies, or household goods
UN Number: Not a regulated dangerous good for transport
Proper Shipping Name: Not applicable for many commercial preparations
Transport Hazard Class: Not classified
Packing Group: Not classified
Labels: No specific hazard labels required
Special Precautions: Transport securely with containers tightly closed, away from incompatible goods, tracked for inventory compliance and emergency access if necessary
TSCA Status (USA): Listed
EPA Registration: Registered under FIFRA for specific authorized uses
European Union: Approved active substance under Regulation (EC) No 1107/2009, national approvals vary by country
Other Global Lists: Included in schedules for Australia (APVMA), Japan (MAFF), China (ICAMA), and several South American regulators
Worker Protection Standards: Comply with agricultural chemical handling laws and personal protective requirements
Right-to-Know: Product safety and hazard information sheet must be available to all users in applicable regions
