Perchloromethyl Mercaptan (CCl₄S) is a toxic chemical that poses a serious health risk to workers in manufacturing plants. So how does it affect the human body? Let’s explore the impact of this substance and effective measures to protect your health!
1. What is Perchloromethyl Mercaptan (Trichloromethanesulfenylchloride)?
Perchloromethyl Mercaptan, also known as Trichloromethanesulfenyl chloride, has the chemical formula CCl₄S and is an organosulfur compound. This substance is commonly used in industries such as the production of chemicals, dyes, and pesticides. The chemical formula CCl₄S indicates the compound consists of a trichloromethyl group (-CCl₃) attached to a sulfenyl chloride group (-SCl).
Perchloromethyl Mercaptan (CCl₄S) is a toxic chemical that poses a serious health risk to workers in manufacturing plants. So how does it affect the human body? Let’s explore the impact of this substance and effective measures to protect your health!
1. What is Perchloromethyl Mercaptan (Trichloromethanesulfenyl chloride)?
Perchloromethyl Mercaptan, also known as Trichloromethanesulfenyl chloride, is an organosulfur compound with the chemical formula CCl₄S. This substance is commonly used in industries such as the production of chemicals, pharmaceuticals, and plastics. The chemical formula CCl₄S shows that the compound consists of a trichloromethyl group (-CCl₃) bonded to a sulfenyl chloride group (-SCl).
Perchloromethyl Mercaptan is a colorless liquid with a characteristic pungent odor. Although it has applications in industrial production, the presence of four chlorine atoms in its chemical structure makes it a compound that can be harmful to health if not handled properly. The stability and reactivity of this compound make it a hazardous element in the workplace, especially in chemical manufacturing plants.
| No. | Chemical Name in Vietnamese | Chemical Name in English | HS Code | CAS Number | Chemical Formula |
| 1. | Perclometyl mercaptan | Perchloromethyl Mercaptan (Trichloromethanesulfenyl chloride) | 29309090 | 594-42-3 | CCl₄S |
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2. Where does Perchloromethyl Mercaptan (Trichloromethanesulfenyl chloride) originate from in the production process?
This substance often arises during the production of industrial chemicals, especially when using carbon tetrachloride (CCl₄) in chemical reactions. In some manufacturing processes, chlorine-containing compounds are combined with sulfur to create this product. This process can occur in the presence of suitable catalysts or in a high-temperature environment, where the reaction between carbon tetrachloride and sulfur compounds takes place, leading to the formation of Perchloromethyl Mercaptan.
This chemical can also appear in the production processes of plastics, resins, and other additives. However, the main source remains chemical processes related to the use or handling of carbon tetrachloride, particularly in the chemical and pharmaceutical manufacturing industries.

3. Industries that use Perchloromethyl Mercaptan (Trichloromethanesulfenyl chloride) in production
This substance is widely used in many industries, especially in chemical manufacturing. One of the main areas is the production of plastics and resins, where it plays an important role in synthesizing additives that increase stability and resistance to environmental impacts.
In addition, this compound is also applied in the production of pesticides and plant protection agents, as it can interact with organic substances to create highly effective products for preventing the growth of insects and bacteria. Besides, the pharmaceutical industry also uses Perchloromethyl Mercaptan in some special drug synthesis processes.
In other industries, this substance is also used in the production of chlorine-containing compounds, cleaning agents, and some types of chemicals with high applicability in food preservation and processing.
4. How does Perchloromethyl Mercaptan (Trichloromethanesulfenyl chloride) affect workers?
This substance can cause serious health effects for workers upon direct contact or inhalation of toxic gases from chemical reactions. Common effects on the body include respiratory irritation, leading to difficulty breathing, coughing, and lung problems. Inhaling this compound over a long period can cause severe damage to the respiratory system, even leading to pneumonia or chronic diseases.
In addition, contact with the skin or eyes can cause severe irritation, leading to redness, dermatitis, or damage to the eye’s mucous membranes. In some serious cases, long-term exposure can lead to neurological problems, including dizziness, headaches, and cognitive disorders. If this substance enters the body through the respiratory tract or skin, it can accumulate in internal organs, causing harm to the liver, kidneys, and circulatory system.
Particularly, workers in poorly ventilated environments or who do not use appropriate protective equipment are at high risk of poisoning, which can lead to serious long-term health problems.
5. Permissible safe concentration of Perchloromethyl Mercaptan (Trichloromethanesulfenyl chloride) for human exposure
The permissible safe concentration for exposure to this substance depends on the regulations of international health and occupational safety organizations. According to the standards of the Occupational Safety and Health Administration (OSHA) and similar agencies, the maximum concentration of this substance in the air must be strictly controlled. Limits are often given by indicators such as PEL (Permissible Exposure Limit) and TLV (Threshold Limit Value), to ensure that workers are not adversely affected when working in the presence of this compound.
Although specific regulations may vary by country, scientific studies show that the maximum concentration to which a worker can be exposed without harm to health is very low. Typically, these concentrations are measured in ppm (parts per million) and must be maintained at a safe level throughout the work shift. Failure to comply with these limits can lead to the risk of respiratory and neurological diseases, so it is necessary to ensure protective measures such as good ventilation and protective equipment when working in an environment with this chemical.

At a basic level, if working in an industrial environment, it is important to adhere to safety standards and limit exposure to Perchloromethyl Mercaptan. Organizations like the Occupational Safety and Health Administration (OSHA) in the United States provide safety guidelines and principles to protect workers from the negative effects of chemical substances.
6. Measures to minimize the influence of Perchloromethyl Mercaptan (Trichloromethanesulfenyl chloride) on workers’ health
To minimize the health effects of this substance on workers, protective and control measures must be strictly implemented at production facilities. One of the most important measures is to ensure an adequate and effective ventilation system in work areas where this substance is used. Installing local exhaust ventilation and ensuring the air is continuously cleaned are key factors in limiting the accumulation of the toxic compound in the air.
In addition, workers must use adequate personal protective equipment (PPE) such as respirators, gloves, eye protection, and protective clothing. This equipment helps prevent direct contact with the toxic substance, protecting the skin and eyes from irritation, as well as minimizing the likelihood of inhaling toxic gases. Furthermore, adhering to regulations on permissible safe concentrations in the air is extremely important to reduce the risk of health effects.
Training and raising awareness for workers is also an indispensable factor. They need to be instructed on the potential risks when working with this substance and how to use protective equipment correctly. In addition, medical measures such as periodic health checks, monitoring for signs of poisoning, and promptly treating symptoms also play an important role in protecting workers’ health.
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 adherence to safety rules.
Periodically organize occupational environment monitoring in factories and enterprises, collect and analyze factors harmful to workers, and then adjust to reduce the hazard level to prevent occupational diseases for them.
7. National Occupational Environment Monitoring Center
The Occupational Environment Monitoring Center of Nam Viet 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.
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In addition to providing monitoring services, the center also supports clients in planning, handling, and tracking occupational 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 technology, engineering, 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 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. You will also get the best offers on costs.
8. Quotation for Occupational Environment Monitoring
To help businesses carry out occupational environment monitoring professionally and effectively, we at Nam Viet provide our customers with a quality and reasonably priced quotation for occupational environment monitoring services.
- Our quotation provides detailed information on the prices of the monitoring services we offer. It includes all 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 quotation, customers can easily choose service packages that suit their needs. We are committed to bringing our customers the highest satisfaction with professional service quality.

