What is Alpha Cypermethrin CAS 67375-30-8?

Alpha Cypermethrin is a technical-grade synthetic pyrethroid insecticide active ingredient. It is also known as alphamethrin and has the molecular formula C22H19Cl2NO3.

How does Alpha Cypermethrin differ from generic cypermethrin?

Alpha Cypermethrin is a stereochemically enriched form based on the more insecticidally active cis-isomers of cypermethrin. It is designed to provide higher activity at lower use rates than mixed-isomer technical cypermethrin.

Is Alpha Cypermethrin ready to apply directly?

No. This material is a technical-grade active ingredient for qualified formulators. It is used to manufacture end-use products such as emulsifiable concentrates, suspension concentrates and wettable powders.

What pests and crops is Alpha Cypermethrin used to control?

Formulated products are used against chewing and sucking pests such as lepidopteran larvae, aphids, thrips, whiteflies and beetles. Crop uses include cotton, corn, rice, citrus, vegetables, tobacco and tea, plus public-health control of flies and mosquitoes.

How should Alpha Cypermethrin technical material be stored and handled?

Keep it in tightly closed containers in a cool, dry, well-ventilated and secure area, away from heat, food, feed and strong oxidizing agents. Use suitable dust controls and personal protective equipment during weighing, transfer and formulation.

Alpha Cypermethrin CAS 67375-30-8

Alpha Cypermethrin (CAS 67375-30-8), chemically identified as a high-purity synthetic pyrethroid ester, is a potent technical grade active ingredient employed in agricultural insecticide formulation. This racemic mixture, technically known as alphamethrin or (S)-alpha-cyano-3-phenoxybenzyl (1R)-cis-3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxylate, functions as a broad-spectrum neurotoxin acting by contact and ingestion, and is processed into various end-use forms such as EC, SC, and WP for crop protection and vector control. We provide bulk supply of this technical material with competitive factory pricing to facilitate efficient agrochemical production. Our compliance documentation ensures global trade standards are met, making MSDS, TDS, COA available alongside customized specifications to align with formulation stability requirements.

CAS: 67375-30-8
Synonyms: alphamethrin, alfamethrin, cypermethrin alpha-isomer, alpha-cyano-3-phenoxybenzyl 3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxylate
Einecs: 257-842-9
Molecular Formula: C22H19Cl2NO3
Package: 25 kg fiber drum / 200 L iron drum / custom packaging

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Product Description

Alpha Cypermethrin is an alpha-cyano pyrethroid known for its strong insecticidal activity against a broad spectrum of pests such as flies, mosquitoes, aphids, thrips, whiteflies, beetles, and other chewing and sucking insects. It acts by interfering with sodium channels in the insect nervous system, resulting in paralysis and rapid knockdown.

It is widely used in crop protection (vegetables, fruits, cotton, corn, rice), animal husbandry, grain storage, and public health pest control. The product shows strong photostability and excellent field persistence, making it an ideal active ingredient for high-performance formulations.

1 Physicochemical Properties

2 Applications

2.1 Agricultural Use

2.2 Public Health & Household Use

2.3 Veterinary & Industrial Use

3 Storage Conditions

4 Safety Precautions

Physicochemical Properties

Property	Description
Appearance	White to off-white crystalline powder
Purity (Tech.)	≥95%
Boiling Point	300–310°C (decomposes)
Melting Point	78–81°C
Solubility	Insoluble in water; soluble in organic solvents such as xylene, acetone, methanol
Vapor Pressure	Very low (approx. 1.5 × 10⁻⁷ mmHg at 25°C)
Stability	Stable under normal storage; resistant to UV degradation

Applications

Agricultural Use

Controls major pests on crops including cotton, corn, rice, citrus, vegetables, tobacco, and tea.
Effective against lepidopteran larvae, coleopteran pests, and various sap-feeding insects.
Suitable for tank-mixing with other insecticides to enhance spectrum and resistance management.

Public Health & Household Use

Formulation for mosquito control, indoor residual spraying (IRS), ULV fogging.
Used in mosquito coils, sprays, and household insecticide products.

Veterinary & Industrial Use

Applied in livestock insect control and environmental sanitation.
Used for grain storage pest management.

Storage Conditions

Store in a cool, dry, and well-ventilated warehouse.
Keep away from heat sources, direct sunlight, and humidity.
Store in tightly sealed original containers.
Avoid mixing with oxidants and strong acids.

Safety Precautions

Avoid skin, eye, and respiratory exposure; use protective gloves and goggles during handling.
Do not eat, drink, or smoke while handling the product.
Wash thoroughly after use.
Toxic to aquatic organisms—avoid contamination of water sources.
Keep away from children, pets, and non-target animals.

FAQ - Technical & Supply Chain

Q:
What is Alpha Cypermethrin CAS 67375-30-8?

A: Alpha Cypermethrin is a technical-grade synthetic pyrethroid insecticide active ingredient. It is also known as alphamethrin and has the molecular formula C22H19Cl2NO3.
Q:
How does Alpha Cypermethrin differ from generic cypermethrin?

A: Alpha Cypermethrin is a stereochemically enriched form based on the more insecticidally active cis-isomers of cypermethrin. It is designed to provide higher activity at lower use rates than mixed-isomer technical cypermethrin.
Q:
Is Alpha Cypermethrin ready to apply directly?

A: No. This material is a technical-grade active ingredient for qualified formulators. It is used to manufacture end-use products such as emulsifiable concentrates, suspension concentrates and wettable powders.
Q:
What pests and crops is Alpha Cypermethrin used to control?

A: Formulated products are used against chewing and sucking pests such as lepidopteran larvae, aphids, thrips, whiteflies and beetles. Crop uses include cotton, corn, rice, citrus, vegetables, tobacco and tea, plus public-health control of flies and mosquitoes.
Q:
How should Alpha Cypermethrin technical material be stored and handled?

A: Keep it in tightly closed containers in a cool, dry, well-ventilated and secure area, away from heat, food, feed and strong oxidizing agents. Use suitable dust controls and personal protective equipment during weighing, transfer and formulation.

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