Name: China Factory Supply High Quality Permethrin CAS 52645-53-1 for good service
Brand: Wuhan Fortuna Chemical Co., Ltd.

Items	Specifications	Results
Appearance	Pale yellow to light brown viscous liquid	Complies
Permethrin content(%)	Min 92.0	97.20
Moisture content(%)	Max 0.30	0.060
Acidity as H₂SO₄(%)	Max 0.20	0.040
Acetone Insoluble Matter(%)	Max 0.50	0.026
Cis isomer	40.0-45.0%	42.71
Conclusion	The product conforms to the above specifications.

Permethrin is a synthetic chemical that mimics the natural insecticidal properties of pyrethrum, which comes from chrysanthemum flowers. It is a member of the pyrethroid family of insecticides.

Its primary mechanism is attacking the nervous system of insects, causing paralysis and death. It is renowned for its long-lasting residual effect on fabrics and surfaces, unlike many natural repellents that only work on contact.

Main Uses of Permethrin

Permethrin is used in three broad areas:

1. Public Health & Disease Prevention

This is one of its most critical applications.

Malaria Prevention: Insecticide-Treated Bed Nets (ITNs) are soaked in permethrin. This creates a physical and chemical barrier that kills or repels malaria-carrying mosquitoes.
Mosquito Control: Used in large-scale spraying programs to control mosquito populations in areas prone to diseases like dengue and Zika.
Scabies and Lice Treatment: Available by prescription in lotion or cream form (e.g., 5% cream) to treat human infestations of scabies mites and head lice.

2. Agriculture, Veterinary, and Domestic Animal Use

Livestock and Pet Treatments: Used in dips, sprays, spot-ons, and shampoos to control ticks, fleas, lice, and mites on dogs, cattle, and sheep. (CRITICAL NOTE: Permethrin is highly toxic to cats. Products formulated for dogs must never be used on cats.)**
Crop Protection: Used to protect fruits, vegetables, and ornamental plants from a wide range of insect pests.

3. Consumer Products (for materials, not skin)

In this context, permethrin is used as a fabric treatment.

Clothing and Gear: You can buy permethrin spray to treat outdoor clothing, hiking gear, boots, tents, and mosquito nets. The treatment binds to fibers and remains effective through multiple washes (typically 6 weeks or 6 washings).
Pre-Treated Clothing: Brands like Insect Shield sell factory-treated clothing (e.g., shirts, pants, socks) that provides long-lasting protection.
Home Use: Found in some household insecticide sprays for ants, cockroaches, and spiders. Also used in mosquito control products for patios and gardens.

Key Properties and Safety Considerations

Toxicity Profile: It has low mammalian toxicity when used correctly because mammals rapidly metabolize it. However, it is extremely toxic to fish, bees, and aquatic invertebrates.
The "When Dry" Rule: For skin contact, permethrin is safe once the treated fabric has completely dried. The liquid concentrate and wet spray should be handled with care (gloves, ventilation).
Cat Warning (Repeated for Emphasis): Permethrin is highly poisonous to cats. Their livers cannot break it down. Never use permethrin products intended for dogs or the environment on or near cats.
Effectiveness: It works as both an insecticide (kills on contact) and a repellent, making it exceptionally effective for disease prevention.

Summary

Permethrin is a long-lasting synthetic insecticide used to:

Prevent deadly diseases like malaria via bed nets and spraying.
Protect soldiers and outdoor enthusiasts through treated uniforms and gear.
Control pests on pets (not cats), livestock, and crops.
Treat parasitic infestations like scabies and lice in humans.

Its unique ability to bind to fabrics and provide lasting protection, combined with its relatively favorable safety profile for humans, makes it a cornerstone tool in global public health and outdoor protection. Always follow label instructions carefully.