Dichlorvos
Description
Dichlorvos, also known as DDVP (2,2-dichlorovinyl dimethyl phosphate), is a potent organophosphate insecticide and acaricide. It is widely recognized for its fast-acting, systemic, and fumigant properties, making it an essential chemical for rapid pest control in various agricultural and industrial settings.
The mode of action for Dichlorvos involves the inhibition of the enzyme acetylcholinesterase in the nervous system of pests. By binding to this enzyme, it prevents the breakdown of acetylcholine, leading to a massive buildup of the neurotransmitter. This causes constant nerve stimulation, which eventually leads to paralysis and the rapid death of the insect.
In agriculture, it is used to manage a broad range of chewing and sucking insects such as aphids, spider mites, thrips, and various beetles. It is particularly valued in stored-product protection, where its fumigant ability allows it to penetrate grain bulks and storage facilities to eradicate hidden infestations of weevils and other storage pests.
Due to its high volatility and rapid degradation profile, Dichlorvos does not leave long-lasting residues on crops, which can be an advantage in specific integrated pest management programs. However, this volatility means it is less effective as a long-term protectant, necessitating precise timing and potentially multiple applications to control recurring infestations.
Safety is paramount when handling Dichlorvos, as it is classified as highly toxic to humans and non-target organisms. Users must wear appropriate personal protective equipment (PPE), including vapor-filtering respirators and chemical-resistant gloves. Thorough ventilation of treated areas and strict adherence to pre-harvest intervals are mandatory to ensure the safety of workers and the final consumer.
- Excellent knock-down performance.
- High efficacy as a fumigant.
- Broad-spectrum pest control.
- Rapid dissipation in the environment.
Status in the European Union
Not approved in the EU
- CAS number
- 62-73-7
- Category (EU)
- AC - Acaricide
- ADI
- 0.00008 mg/kg bw/day
- ARfD
- 0.002 mg/kg bw
- AOEL
- 0.0005 mg/kg bw/day
Regulatory status data: EU Pesticides Database © European Union, CC BY 4.0. EU status is for reference only and does not replace national registration in your country.