Chlorhexidine Gluconate
Overview
Parathion, commonly known by its trade name '浴酮灵' in Chinese, is an organophosphate compound widely used as an insecticide and acaricide. First introduced in the 1940s, it played a significant role in agricultural pest control but has been banned or restricted in many countries due to its high toxicity. Despite its effectiveness against a broad spectrum of pests, its use requires extreme caution due to the risks it poses to human health and the environment. This chemical acts as a cholinesterase inhibitor, disrupting the nervous system of insects. However, this same mechanism makes it dangerous to mammals, including humans. Proper handling, storage, and application are critical to minimize exposure and environmental contamination.
Physical and Chemical Properties
Parathion is a pale yellow to dark brown liquid with a faint aromatic odor. It has a molecular weight of 291.26 g/mol and a density of 1.26 g/cm³. The compound melts at 6°C and decomposes at 375°C, making it relatively stable under normal storage conditions but prone to degradation at high temperatures. Its solubility profile shows slight solubility in water but high solubility in most organic solvents, including alcohols, ethers, and aromatic hydrocarbons. This property influences its formulation and application methods, often requiring emulsifiable concentrates or wettable powders for effective use in agricultural settings.
Main Applications
Historically, parathion was extensively used to control pests in cotton, fruit orchards, and vegetable crops. Its broad-spectrum activity made it effective against aphids, mites, and other sucking insects that damage crops. In some regions, it was also employed for seed treatment to protect against soil-borne pests during germination. However, due to its high toxicity, many countries have phased out or strictly regulated its use. Some agricultural sectors may still utilize parathion under controlled conditions, typically with mandatory safety protocols and restricted application methods to minimize worker exposure and environmental impact.
Safety and Storage
Parathion is classified as extremely toxic (WHO Class Ia). Exposure can occur through inhalation, skin contact, or ingestion, leading to acute poisoning symptoms such as nausea, convulsions, and respiratory failure. Proper personal protective equipment (PPE) including gloves, goggles, and respirators must be used during handling. Storage requires dedicated, well-ventilated areas away from food, feed, and oxidizing materials. Containers should be clearly labeled and kept locked. Spill management requires specialized procedures with appropriate absorbents, and disposal must comply with local hazardous waste regulations to prevent environmental contamination.
B2B Procurement Guide
When procuring parathion, businesses must first verify the legal status of the product in their operational region. Many countries require special permits for purchase and use. Quality verification should include certificates of analysis, batch numbers, and expiration dates from reputable suppliers. Consider the formulation type (EC, WP, etc.) based on application needs. Price negotiation should account for purity levels, packaging specifications, and transportation costs. Establish clear contracts regarding delivery timelines, storage requirements, and liability provisions for this high-risk material. Always request and review the Safety Data Sheet (SDS) before finalizing any purchase.
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