Pyrethrin II

Synonyms: Pyrethrin II, Pyrethrum extract, Chrysanthemum cinerariifolium extract, Pyrethrins (natural), Pyrethrin I, Pyrethroid

Pyrethrin II is a natural insecticidal ester derived from the flowers of Chrysanthemum cinerariifolium, a plant species native to the Dalmatian region but now cultivated worldwide for pyrethrum production. As one of the two primary active constituents of pyrethrum extract, it has been used for centuries as a botanical insecticide, valued for its rapid knockdown effect and low mammalian toxicity. Unlike many synthetic pyrethroids, Pyrethrin II is biodegradable and poses minimal environmental persistence, making it a preferred choice for organic farming and integrated pest management programs.

Chemically, Pyrethrin II is distinguished from Pyrethrin I by the presence of a methoxycarbonyl group on the cyclopropane ring, which significantly influences its insecticidal activity and stability. While Pyrethrin I excels in knockdown efficacy, Pyrethrin II contributes more to the lethal effect, and their synergistic action in natural extracts provides a balanced performance profile. The compound is typically standardized alongside Pyrethrin I in commercial pyrethrum extracts, with the ratio between the two often adjusted to meet specific application requirements.

In the B2B arena, Pyrethrin II is supplied as a high-purity liquid or incorporated into formulated concentrates for the agricultural, public health, and veterinary sectors. It is commonly used in sprays, dusts, and aerosols targeting mosquitoes, flies, and agricultural pests. The global shift toward sustainable and residue-free crop protection has driven demand for pyrethrin-based products, with Pyrethrin II playing a critical role in formulations where quick knockdown and low toxicity are paramount.

Function & Mechanism

• Insecticidal activity: Disrupts sodium channel function in insect nerve cells, leading to paralysis and death.
• Knockdown effect: Rapidly immobilizes flying and crawling insects upon contact.
• Synergistic action: Works alongside Pyrethrin I to enhance overall efficacy and reduce resistance development.
• Low mammalian toxicity: Rapidly metabolized by mammals, minimizing health risks when used as directed.
• Environmental profile: Breaks down quickly in sunlight and soil, leaving no harmful residues.

Source & Standardization

• Source: Flowers of Chrysanthemum cinerariifolium
• Extraction: Solvent extraction of dried flower heads, followed by concentration and purification
• Standardization: Typically standardized to a total pyrethrin content of 50-60% (HPLC), with Pyrethrin I and II ratios adjusted as needed
• Forms: Viscous liquid, often diluted in solvents for ease of handling
• Applications: Agricultural insecticides, public health sprays, veterinary products, organic farming

Quality Specifications (QC Tests)

Bulk Supply & Documentation

• Monthly capacity: 5 metric tons
• Lead time: 3-5 business days (stock items)
• Documentation: COA, MSDS, TDS available upon request
• Packaging: 25 kg or 200 kg drums, customized packaging available

Frequently Asked Questions

What is the minimum order quantity (MOQ) for Pyrethrin II?

Our standard MOQ is 1 kg for trial orders, with bulk pricing available for larger quantities.

What is the typical lead time for delivery?

For stock items, the lead time is 3-5 business days from order confirmation.

Do you provide samples and COA for evaluation?

Yes, we provide free samples (typically 10-20 g) along with a COA for your evaluation. Sample dispatch takes 1-2 days.

Contact & Ordering Information

• Company: LyvBio Co., Ltd.
• Address: Room 5-0203, Courtyard 205, Lianhu District, Xi’an, Shaanxi, China
• Email: info@lyvbio.com
• Phone: +86-29-65816888

send us your specification for a quotation.