We manufacture Lambda-cyhalothric Acid CAS 72748-35-7, a critical intermediate for pyrethroid insecticides. With controlled cis-isomer, reliable purity and stable supply, we provide samples, flexible MOQ and full supporting documents for global pesticide manufacturers.
CAS: 72748-35-7
Purity：≥98%.
Sample: Can provide
Storage Period：2 years
Packaging : 25kg/ drums
Lambda Cyhalotric Acid, CAS 72748-35-7, is a white crystalline powder. It is a pesticide intermediate of the pyrethroid type and cannot be directly used as an insecticide. It needs to be esterified to obtain the pyrethroid raw material. Lambda cyhalotric acid is the core intermediate of highly effective chlorfluocypermethrin, fenpropathrin, and heptachlorprop. Lambda cyhalotric acid CAS 72748-35-7 provides 98%/99% purity, with stable cis-isomer, uniform batch quality, and can provide complete quality inspection reports and MSDS. It offers stable supply in large quantities. Standard 25kg cardboard barrel, customizable packaging available.
| Test Item | Unit | Specification |
| Water Content | % | ≤0.3 |
| Insoluble Substances in Acetone | % | ≤0.3 |
| Melting Point Range | ℃ | 107～109 |
| Appearance | — | White or off-white crystalline powder, no visible foreign impurities |
| Cis Isomer Ratio | — | Main Z-cis isomer (confirmed per customer order) |
| Heavy Metals (Optional) | ppm | ≤10 |
| Residue on Ignition (Optional) | % | ≤0.1 |
Lambda-cyhalothric acid is synthesized through esterification reaction to produce highly effective chlorfenvinphos (Guokongfenphos), which is also the core acid segment raw material for mainstream pyrethroid active ingredients such as fenpropathrin and heptofenphos.
Downstream products are widely used:
– Field crops: wheat, corn, cotton, vegetables, fruit trees, for the control of aphids, cabbage caterpillars, stem borers, red spiders, thrips, etc., belonging to Lepidoptera, Coleoptera, Hemiptera pests;
– Sanitation and pest control: termites, mosquitoes, flies, cockroaches, etc., for pest control in households and public areas;
– Forestry, lawns, warehouse pest control.
Chlorofluorine-containing synthetic building blocks of chiral cyclopropane, used in organic synthesis and for the use of pesticide metabolic reference substances.
Lambda cyhalotric acid is used in the research and synthesis of some fluorine-containing special auxiliaries and surfactants.
✅ High purity specifications are available (98% / 99% minimum, HPLC), with stable isomerization, high yield of finished pyrethroid, reduction of waste, and lower overall production cost for customers.
✅ Isomerization is stable, with strong batch consistency. Each batch provides a quality inspection report (COA). The melting point, content, individual impurities, and moisture indicators are stable, suitable for long-term stable production.
✅ Wide downstream compatibility: One set of raw materials can produce multiple mainstream pyrethroid varieties such as Kungfu pyrethroid, Linphen pyrethroid, and Hebefu pyrethroid. One intermediate line supports multiple original drugs for customers, simplifying raw material procurement.
✅ Mature industrial process, stable supply, capable of supporting large-scale orders, long-term framework supply, and flexible combination of spot supply and production scheduling.
✅ Comprehensive technical support: Provide reference for basic esterification process, storage and feeding precautions, and assist in customer process debugging.
✅ Complete supporting documents: Provide MSDS, COA, quality inspection methods, suitable for overseas pesticide original drug factory procurement needs.
✅ Significant cost-performance advantage. As a core basic intermediate in the pyrethroid industry chain, it has strong market universality, stable demand, and is a necessary raw material for pyrethroid factories.
The product strictly controls the proportion of the cis isomer. The purity of the isomer directly determines the insecticidal activity of the downstream pyrethroid; poor control of the isomer will result in decreased efficacy of the finished product and higher impurities.
The trifluoromethyl + chloro-substituted structure on the molecule is the structural basis for the high insecticidal activity, strong contact killing, resistance to rain erosion, and long duration of action of pyrethroids.
Good crystallization property, easy purification; the reaction activity is stable under esterification conditions, the side reactions are controllable, suitable for continuous and large-scale esterification production.
Stable under dry conditions; prone to hydrolysis in the presence of strong alkali. The quality is stable under normal storage and feeding systems (weakly acidic / neutral).
Focus on controlling individual impurities, moisture, and acid-insoluble substances, reducing the pressure of downstream raw drug purification and lowering the costs of distillation / recrystallization.
Standard packing: 25kg fiber drum lined with PE inner bag.
Storage：Store the product in a cool, dry, well-ventilated warehouse, keep containers tightly closed and protected from light. Keep away from strong alkali and sources of ignition. During transportation, avoid moisture, direct sunlight and rain. Do not ship together with food, seeds or animal feed. The shelf life is 2 years when stored in unopened original packaging.
Q: What is your MOQ?
A: Our minimum order quantity is 25kg. Small trial orders are acceptable.
Q: What is the lead time for delivery?
A: For goods in stock, delivery can be arranged within 3–5 working days. For bulk production orders, the lead time is about 7–15 working days, subject to order quantity.
Q: Can I get samples for testing?
A: Yes, samples are available, while the courier freight will be borne by the buyer. Samples are packed in sealed aluminium foil bags or plastic bottles, same quality as bulk goods.
Q: Can you provide COA and MSDS documents?
A: Yes, COA and MSDS are available for each batch to support export customs clearance.
Q: Can lambda-cyhalothric acid be used directly as an insecticide?
A: No. Lambda cyhalotric acid is only a pesticide intermediate. It must go through esterification reaction to produce pyrethroid technical materials before pest control application.
Q: What is its solubility?
A: Lambda cyhalotric acid is hardly soluble in water, soluble in organic solvents such as ethyl acetate and dichloromethane. It can dissolve in alkaline aqueous solution but will be hydrolyzed under strong alkaline condition for a long time.
Q: What downstream products can be synthesized from this material?
A: It is mainly used for the synthesis of lambda-cyhalothrin, bifenthrin and tefluthrin.
Q: Is there any special requirement for storage?
A: Keep sealed and dry, stay away from strong alkali. Follow general fine chemical standards during transportation and avoid exposure to sun and rain.
