Paraquat (C12H14Cl2N2) is one of the most toxic chemicals commonly used in industry. This article will explore how Paraquat affects the health of workers, from respiratory risks and internal organ damage to effective protective measures in a high-risk work environment.
1. What is Paraquat?
The chemical formula for Paraquat is C12H14Cl2N2, representing an organic compound of the bipyridyl group, widely used in agriculture and industry. It is a non-selective herbicide that works by disrupting the photosynthesis process in plants, leading to their desiccation and death. Due to its powerful and highly effective nature, this substance is often used for weed control in agricultural fields and industrial areas.
In its pure state, this compound appears as colorless solid crystals with a characteristic odor. However, in practice, it is usually formulated as a liquid solution for ease of use. This compound has high solubility in water, making it an effective tool but also posing significant risks to human health and the environment if not handled carefully.
| No. | Chemical Name in Vietnamese | Chemical Name in English | HS Code | CAS Number | Chemical Formula |
| 1. | Paraquat | Paraquat | 29339990 | 1910-42-5 | C12H14Cl2N2 |
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2. Where does Paraquat originate from during the production process?
This compound is primarily synthesized in chemical plants specializing in the production of herbicides and plant protection products. The production process begins with the use of basic chemical compounds such as pyridine and other derivatives, through complex chemical reactions to create a highly active final product.
In this process, raw materials are often processed at high temperatures and pressures to promote the chemical reaction. Concurrently, the use of specialized catalysts helps increase the efficiency and purity of the product. This process can generate emissions, chemical-laden wastewater, and fine dust from raw materials or by-products, which can cause environmental pollution if not strictly controlled.
Additionally, intermediate products or waste from the production process can also be a source of this compound in residual form.

3. Industries that use Paraquat in production
The compound Paraquat is widely used in many industries, especially in agriculture and the chemical industry. In agriculture, it is commonly used to produce non-selective herbicides. These products help control weeds in cultivated fields, ensure crop yields, and reduce manual labor. It is an important tool for large-scale farming, where rapid and effective weed management is required.
Furthermore, in the chemical industry, this compound is used as a component in the research and development of other chemical products. Chemical manufacturing plants often leverage its potent properties to create products with high applicability. However, due to its toxic nature, the use of this compound requires strict supervision and occupational safety measures to ensure worker safety.
Other industries, such as food processing or building material manufacturing, may be indirectly exposed to this compound if it is used in material preparation or environmental treatment steps.
4. How does Paraquat affect workers?
This is a compound that has a strong impact on the health of workers, especially with long-term exposure or at high concentrations. One of the most severe effects is damage to the respiratory system. When inhaling vapors or dust containing this chemical, workers are at risk of lung irritation, respiratory tract inflammation, and in severe cases, it can lead to pulmonary fibrosis, causing a decline in respiratory function.
In addition to its effects on the respiratory system, this compound also significantly affects the skin and eyes. Direct contact can lead to dermatitis, rashes, or chemical burns, while eye contact can cause severe irritation and even corneal damage. If ingested, this chemical can cause damage to internal organs such as the liver, kidneys, and stomach, leading to serious problems like acute renal failure or systemic poisoning.
Long-term exposure is also linked to an increased risk of cancer and other chronic health issues. In particular, workers who are not adequately equipped with protective gear or work in environments that are not strictly controlled are at a higher risk of being negatively affected.
5. Permissible safe concentration of Paraquat for human exposure
The safe concentration of the Paraquat compound for human exposure is strictly regulated to minimize health risks. According to international standards, the Threshold Limit Value (TLV) is typically determined based on an average exposure time over an 8-hour workday and a 40-hour workweek. Specifically, the concentration should not exceed 0.5 mg/m³ in the workplace air to prevent harm to workers’ health.
Maintaining the concentration below this limit is crucial in protecting workers from immediate effects such as skin, eye, and respiratory irritation, as well as long-term consequences like lung damage or impaired organ function. These regulations are based on scientific research on the toxicity and factors affecting the human body upon exposure to the chemical.
In practice, to ensure the concentration remains within the permissible limits, factories and production facilities need to implement strict control measures.

At a basic level, when working in an industrial environment, it is important to adhere to safety standards and limit exposure to Paraquat. Organizations such as the Occupational Safety and Health Administration (OSHA) in the United States provide guidelines and safety principles to protect workers from the negative impacts of chemical substances.
6. Measures to minimize the impact of Paraquat on workers’ health
To minimize the impact of Paraquat on workers’ health, protective measures must be thoroughly applied throughout the production and use of this chemical. One of the most important measures is providing adequate personal protective equipment (PPE) for workers, including chemical dust masks, gloves, protective clothing, goggles, and boots. This equipment helps limit direct contact with the chemical, minimizing the risk of damage to the skin, eyes, and respiratory system.
Along with the use of protective equipment, improving the ventilation system in the work area is essential. An effective ventilation system helps reduce the concentration of the chemical in the air, creating a healthier and safer working environment. Factories need to ensure that the air in the production area is constantly cleaned and circulated, especially in the presence of toxic chemicals like Paraquat.
Furthermore, training workers on potential risks and self-protection methods is also crucial. Workers need to be equipped with knowledge about poisoning symptoms, how to respond to chemical exposure, and immediate first-aid measures. Communication and training on occupational safety should be conducted periodically to ensure workers always understand and are proactive in prevention.
Finally, occupational safety procedures and standards must be established and strictly adhered to throughout the production process. This includes monitoring chemical concentrations in the air, regularly inspecting protective equipment, and implementing measures to minimize exposure risks for workers. Applying these measures not only helps protect workers’ health but also creates a safe and sustainable working environment.
Occupational safety training: Workers need to be trained and educated on 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 compliance with safety rules.
Periodically organize occupational environment monitoring in factories and enterprises, collect and analyze factors harmful to workers, and thereby adjust to reduce hazard levels to prevent occupational diseases for them.
7. National Occupational Environment Monitoring Center
Nam Viet’s Occupational 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 to ensure accuracy and reliability.
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In addition to providing monitoring services, the center also assists clients in planning, handling, and tracking issues related to the occupational environment. 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 occupational 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 solutions possible.
- With a team of experienced and specialized Masters and Engineers, we aim to protect the environment and benefit businesses.

- By choosing the Nam Viet Environmental Monitoring team, your company will receive professional service from experts in the monitoring field. You will also receive the best cost incentives.
8. Quotation for Occupational Environment Monitoring
To help businesses conduct occupational environment monitoring professionally and effectively, Nam Viet provides our customers with a quality and reasonably priced quotation for occupational environment monitoring services.
- Our monitoring quotation provides detailed information on the pricing 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 consultation and answer any questions about our monitoring services quickly and professionally.
- With Nam Viet’s monitoring quotation, customers can easily choose service packages that suit their needs. We are committed to bringing our customers the highest satisfaction with professional quality service.

