Methamidophos (C2H8O2NSP) is a toxic chemical commonly used in manufacturing plants, but few people know that it can cause many adverse health effects for workers. Let’s explore the hidden risks and effective protective measures in this article.
1. What is Methamidophos?
The chemical formula C2H8O2NSP is an important part of determining the structure and properties of a chemical substance. This is the formula for Methamidophos, a compound belonging to the organophosphate group. This substance has a strong effect on the nervous system of organisms, making it a popular pesticide in the agricultural industry. The formula C2H8O2NSP shows its constituent elements: carbon (C), hydrogen (H), oxygen (O), nitrogen (N), sulfur (S), and phosphorus (P), with phosphorus being the characteristic element in organophosphate compounds.
With this chemical structure, Methamidophos can easily penetrate the body through the respiratory tract, digestive system, or skin, making it a high-risk substance for human and animal health. The chemical properties of Methamidophos, such as its slow degradation in the environment, further increase its long-term persistence and impact on ecosystems and public health.
| No. | Chemical Name in Vietnamese | Chemical Name in English | HS Code | CAS Number | Chemical Formula |
| 1. | Methamidophos | Methamidophos | 29305000 | 10265-92-6 | C2H8O2NSP |
See more about our chemical safety training service according to Decree 113/2017/ND-CP
REGISTER FOR CHEMICAL SAFETY TRAINING ACCORDING TO DECREE 113
2. Where does Methamidophos originate from in the production process?
During production, Methamidophos is often created in factories that use organophosphate chemical compounds to produce pesticides. It is a byproduct or a result of chemical synthesis reactions from raw materials such as phosphoric acid and ammonium compounds. These materials may be processed through various steps to form Methamidophos, which is primarily used in agriculture to control various insect pests.
The production process of Methamidophos begins with the synthesis of phosphorus-containing compounds, which then undergo stages such as temperature and pressure adjustments and the use of catalysts to transform the chemical components into the final product. In manufacturing plants, Methamidophos can be generated from the improper handling of raw materials, leaks in the equipment system, or unsafe storage and transportation. These sources of generation often pose a risk to the health of workers if strict control measures are not in place.

3. Industries that use Methamidophos in production
In production, Methamidophos is primarily used in the agricultural sector, especially in the manufacturing of pesticides to protect crops from various harmful insects. Agricultural processing plants and pesticide manufacturing facilities are the places where Methamidophos is used most. It has a powerful effect on many types of insects such as pests, aphids, and termites, helping to protect crops and increase agricultural yields.
Besides the agricultural industry, Methamidophos may also be present in some food processing industries, where it is used for disinfection and preservation of products. Some facilities that produce insecticides or disinfect workshops may also use Methamidophos to control the presence of harmful insects.
4. How does Methamidophos affect workers?
When exposed to Methamidophos, workers can experience serious health effects, especially without adequate protection. This compound can be rapidly absorbed through the skin, inhaled, or ingested, causing immediate or long-term effects on the central and peripheral nervous systems. Symptoms of Methamidophos poisoning can include nausea, headache, dizziness, blurred vision, and seizures, especially with direct exposure to large or prolonged doses.
In addition to acute symptoms, long-term exposure to Methamidophos can lead to more serious health consequences for workers. Respiratory problems such as difficulty breathing, persistent coughing, and pneumonia can also arise. Workers may suffer from impaired liver, kidney, or other internal organ function due to the accumulation of toxins in the body over time. Furthermore, Methamidophos can also cause mental health issues such as anxiety, depression, and insomnia.
In particular, those working in environments with high concentrations of Methamidophos, such as pesticide manufacturing plants or agricultural facilities, are at risk of developing occupational diseases if they are not fully equipped with protective gear and do not comply with occupational safety regulations.
5. Permissible safe concentration of Methamidophos for human exposure
Determining the safe concentration of Methamidophos for human exposure is crucial to protecting workers’ health. Health agencies and international organizations have issued regulations on safe exposure levels to limit the risk of poisoning and occupational diseases caused by this compound. According to the standards of the World Health Organization (WHO) and the U.S. Environmental Protection Agency (EPA), the concentration of Methamidophos in the air should not exceed 0.1 mg/m³ for workers in environments with exposure to this substance.
For skin contact, studies have shown that an exposure level not exceeding 0.05 mg/cm² is safe for workers’ health. However, factors such as humidity, temperature, and duration of exposure can affect the skin’s ability to absorb Methamidophos, thereby increasing the risk of poisoning.

On a basic level, if working in an industrial environment, it is important to adhere to safety standards and limit exposure to Methamidophos. Organizations like the Occupational Safety and Health Administration (OSHA) in the United States provide guidelines and safety principles to protect workers from the negative effects of chemical substances.
6. Measures to minimize the health effects of Methamidophos on workers
To minimize the health effects of Methamidophos on workers, preventive and protective measures are extremely important. One of the most basic and effective measures is to fully equip workers with personal protective equipment (PPE). Protective gear such as masks, gloves, safety glasses, and chemical-resistant gowns helps prevent direct contact with Methamidophos, reducing the risk of inhalation or skin absorption. Especially in areas with high concentrations of Methamidophos, the proper use of protective equipment not only protects workers but also creates a safer working environment.
Besides using personal protection, controlling the concentration of Methamidophos in the air is another important measure. The levels of this chemical in the air should be regularly monitored and tested to ensure they do not exceed permissible limits. Effective ventilation systems will help reduce the accumulation of Methamidophos in the air, creating a more ventilated and safer work environment.
Furthermore, training and raising awareness among workers about the health risks of exposure to Methamidophos are essential. Workers need to be equipped with knowledge about the symptoms of poisoning and timely first-aid measures in case of an incident. Ensuring that all employees fully understand safety procedures and strictly adhere to guidelines will contribute to minimizing risks.
Finally, conducting regular health check-ups for workers, especially those in environments with Methamidophos exposure, is a crucial measure for the early detection of signs of poisoning or occupational diseases. These measures will help ensure the long-term health of workers and minimize the impact of Methamidophos on them.
Occupational safety training: Workers need to be trained and educated about the risks and safety measures when working with this type of chemical. This training should be provided periodically and regularly to ensure understanding and proper adherence to safety rules.
Periodically organize workplace environment monitoring in factories and enterprises, to collect and analyze factors harmful to workers, thereby adjusting to reduce the hazard level to prevent occupational diseases for them.
7. National Workplace Environment Monitoring Center
Nam Viet’s Workplace Environment Monitoring Center is a professional unit specializing in monitoring and measuring the quality of the working environment across all provinces in Vietnam. With a team of experienced monitoring specialists, the center uses modern measuring equipment, ensuring accuracy and reliability.
REGISTER FOR WORKPLACE ENVIRONMENT MONITORING SERVICES
In addition to providing monitoring services, the center also assists clients in planning, handling, and tracking workplace environment issues. With the motto “the customer is the center,” the center focuses on customer satisfaction, meets all customer needs, and is committed to providing the best solutions for businesses.
With investment in techniques, technology, and human resources, Nam Viet’s monitoring center has become one of the reputable units in the field of workplace environment monitoring in Ho Chi Minh City with the following objectives:
- We always value our brand reputation and the quality of our products and services.
- We provide our customers with the best and most suitable options possible.
- With a team of experienced Masters and Engineers with a desire to protect the environment and benefit businesses.

- With the Nam Viet Environmental Monitoring team, your company will receive professional service from experts in the monitoring field. At the same time, you will get the best cost incentives.
8. Workplace Environment Monitoring Quotation
To help businesses carry out workplace environment monitoring professionally and effectively, Nam Viet offers our customers a quality and reasonably priced quotation for workplace environment monitoring services.
- Our quotation provides detailed information on the prices of the monitoring services we offer. This includes costs related to travel, measurement, analysis, and reporting of results. Customers can be completely assured of the accuracy and reliability of the monitoring result reports we provide.
- We are committed to always offering the most competitive and reasonable prices on the market, and we are also always ready to provide advice and answer any questions about our monitoring services quickly and professionally.
- With Nam Viet’s quotation, customers can easily choose service packages that suit their needs. We are committed to bringing our customers the highest satisfaction with our professional service quality.

