© 2026 Nanjing Finechem Holdings Co., Ltd,
All Right Reserved
Substance Name: Pyrethrum Extract
Common Uses: Insecticide in agricultural fields, household pest control sprays, garden treatments
Active Components: Pyrethrins derived from Chrysanthemum cinerariaefolium flowers
Physical Form: Brownish-yellow liquid with a strong herbal-chemical scent
Hazard Classification: Flammable liquid, irritant, acute toxicity for some exposure routes
Main Dangers: Skin and eye irritation, inhalation hazards especially in enclosed or poorly ventilated areas
Warning Symbols: Flammable, harmful if inhaled or swallowed, environmental hazard
Who Should Take Care: Children, pets, people with respiratory or skin sensitivities
Pyrethrins: Usually 0.5% to 2% of finished products
Solvents: Kerosene, mineral oil, or other hydrocarbon carriers up to 90% or more
Synergists: Piperonyl butoxide often included, raises toxicity to insects (and sometimes humans)
Inert Ingredients: Emulsifiers, stabilizers make up the rest, but full formulas may not always be disclosed
Skin Contact: Wash thoroughly with soap and water
Eye Contact: Rinse cautiously with water for several minutes, seek medical help if irritation persists
Inhalation: Move to fresh air, loosen tight clothing, monitor for breathing trouble
If Swallowed: Drink water to dilute, seek medical attention for larger exposures
Opinion: Home users often trust "natural" labels, but even plant-based chemicals call for real caution — always use protective gloves and eyewear rather than relying on assumptions about safety
Fire Hazards: Liquids and vapors catch fire easily
Extinguishing Options: Alcohol-resistant foam, CO₂, dry chemical powders
Combustion Byproducts: Toxic fumes, acrid smoke, hydrocarbons
Firefighting Reality: Responders need full protective gear, self-contained breathing equipment; homemade bug sprays stored near open flames or hot machinery risk flash-fires in home garages and farm sheds
Spill Cleanup: Absorb with earth, sand, or inert materials
Ventilation: Air out affected areas thoroughly
Personal Protection: Chemical-resistant gloves and boots limit exposure risk
Disposal: Gather all waste promptly; avoid drains or water sources — careless rinsing can poison local aquatic insects and fish
Multiple Accounts: People tend to rinse small spills down the sink, but that habit adds up; enforcing better cleanup helps protect waterways
Safe Handling: Avoid splashes and inhaling fumes, open containers in well-ventilated areas
Storage Location: Store cool and dry, away from heat sparks, and sunlight
Compatibility: Keep away from oxidizers, acids, open flames
Advice: Large drums or garden jugs left in hot sheds often leak or bulge, so check regularly for swelling or corrosion — take spills seriously rather than delaying action
Engineering Controls: Use exhaust hoods or cross-ventilation wherever vapor accumulates
Personal Protection: Chemical goggles, gloves, long sleeves, closed shoes
Respiratory Protection: Masks needed in dusty or poorly ventilated barns, greenhouses, confined workspaces
Home Use Gaps: Most people skip gloves or masks, and so end up with rashes, breathing troubles, or headaches after treating rooms or gardens — education and reminders on labels could cut down on unnecessary injuries
Appearance: Amber or brownish liquid
Odor: Sharp, often bitter or petroleum-like
Flash Point: Often below 100°C (flammable range)
Solubility: Pyrethrins not soluble in water, soluble in many organic solvents
Stability: Sensitive to light, heat, oxygen — breaks down quickly if stored improperly
Chemical Instability: Breaks down in sunlight and high temperatures
Incompatible With: Strong acids, alkalis, oxidizers, open flames
Reactivity: Vapors ignite easily; mixing with strong cleaning agents can generate unexpected fumes
Personal Reports: I've seen pesticide shelf-lives cut short by leaving garage windows open in the summer — proper dark, cool storage really extends safe use
Acute Effects: Skin tingling, numbness; inhalation brings sore throat or cough, headaches, sometimes dizziness
Long-Term Risks: Allergic reactions and asthma-like symptoms in some users; animal tests suggest nerve effects after massive exposures
Eyes: Redness, watering, temporary blurred vision for some exposed applicators
Unique Cases: People with ragweed or related allergies often react more intensely; warnings should address this vulnerability out in the open
Toxic to Aquatic Life: Kills fish, frogs, aquatic insects at low concentrations
Rapid Breakdown: Sunlight and soil bacteria usually destroy pyrethrins in outdoor environments within days
Bioaccumulation: Rare, but still a worry if repeat overuse occurs
Real-World Impact: Backyard runoff after rain events can spike local pesticide levels — thoughtful buffer zones and outdoor application guidance would go a long way to protect streams and garden ponds
How to Dispose Safely: Take unused amounts to hazardous waste collection points
Never Pour Down Drains: Even small amounts poison septic systems and water treatment plants
Used Containers: Triple rinse, puncture, discard with care
Personal Experience: Community recycling days often see piles of old pesticide jugs; expanding these programs prevents careless dumping behind barns or garages
Shipping Hazards: Classified as hazardous material for road, rail, air transport
Packing Rules: Must travel in tight, non-leaking containers
Spill Response: Plans required in case of traffic accidents
What Actually Happens: Accidents or truck rollovers involving pesticides cause significant hazmat events, so both shippers and communities need coordinated emergency drills
Governing Regulations: Most countries regulate pyrethrum-based insecticides through pesticide control acts and environmental protection standards
Labeling Laws: Strict rules on warning phrases, hazard icons; regular updates called for fresh science
Worker Protections: Safety gear mandates for commercial users
Ongoing Needs: Regulatory bodies sometimes lag on updating guidance for backyard use and smaller-scale applications; better partnership with hardware and garden centers could close this awareness gap
