The hidden dangers behind Thionyl Chloride and its typical impacts on worker health. This article will take you into the world of this chemical, clarifying the risks and providing solutions to protect your health. Read to understand clearly and face the occupational safety challenge!
1. What is thionyl chloride?
Thionyl chloride (SOCl2) is a chemical compound widely used in industry. It is a colorless, odorless, and highly corrosive liquid. Thionyl chloride is often used as a reagent in organic synthesis, especially in the process of creating organic compounds containing chlorine groups. Please let me know if you have more questions or need more detailed information about Thionyl chloride.
| No. | Chemical name in Vietnamese | Chemical name in English | HS Code(1) | CAS Number | Chemical Formula |
| 1. | Thionyl cloric | Thionyl chloride | 28121095 | 7719-09-7 | SOCl2 |
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2. Where does thionyl chloride originate from in the production process?
Thionyl chloride, often denoted as SOCl2, can be produced through chemical processes from various raw materials, but most commonly by reacting thionyl sulfate (SO2(OSO2OH)) with chlorine:
SO2(OSO2OH) + 2Cl2 → 2SOCl2 + 2H2SO4
This process produces thionyl chloride and sulfuric acid. The resulting thionyl chloride can then be purified to ensure high quality and purity.
This is just one of the methods for producing thionyl chloride, and there are many different ways depending on the specific conditions and the intended use of the product.

3. Industries containing Thionyl chloride that pose a hazard to workers
Thionyl chloride (SOCl2) is a corrosive substance and can create compounds hazardous to health upon direct contact. Industries that use or come into contact with Thionyl chloride can pose special risks to workers. Below are some industries that may involve Thionyl chloride and can be hazardous to workers:
- Chemical and Pharmaceutical Industry: Thionyl chloride is often used in the synthesis of chemicals and pharmaceuticals.
- Electronics Industry: May be used in the production of batteries and electronic circuits.
- Textile and Leather Industry: May be used in some production and processing processes.
- Rubber Industry: Thionyl chloride may be used in some rubber production processes.
- Oil and Gas Industry: In some cases, it may be used in the extraction and processing of oil.
Most importantly, people working in these industries need to be trained in occupational safety and follow personal protective measures to minimize the risks associated with Thionyl chloride.
4. How does thionyl chloride affect workers?
Thionyl chloride (SOCl2) is a corrosive liquid and can create hazardous compounds upon contact with workers. Here are some possible effects:
- Effects on Skin and Eyes: Thionyl chloride can cause irritation, redness, and vomiting upon direct skin contact. If this substance comes into contact with the eyes, it can cause pain, redness, and danger to eye health.
- Respiratory Issues: Thionyl chloride vapor can cause irritation to the respiratory tract and chest pain when inhaled.
- Risk of Endocrine Disruption: May affect the endocrine system and pose a risk to reproductive health.
- Toxic Hazard: If absorbed into the body, Thionyl chloride can have toxic effects on the liver, kidneys, and nervous system.
5. Permissible safe concentration of Thionyl chloride for human exposure
To ensure safety, regulations on safe concentrations are often determined by occupational safety and health regulatory agencies. These standards may vary by country and specific industry.
At a basic level, if working in an industrial environment, adhering to safety standards and limiting exposure to Thionyl chloride is important. Organizations like 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.
Note that safety depends on many factors, including exposure duration, method of contact (inhalation, skin contact, ingestion, etc.), and working conditions. Ensuring that you are following all safety rules and guidelines from the manufacturer and regulatory agencies is very important.

6. Measures to minimize the health effects of Thionyl chloride on workers
To minimize the health effects of Thionyl chloride (SOCl2) on workers, the following protective and safety measures can be implemented:
- Wear Personal Protective Equipment (PPE):
- Chemical-Resistant Mask: Ensure workers wear chemical-resistant masks with adequate filters to prevent inhalation of Thionyl chloride vapors and particles.
- Chemical-Resistant Gloves and Clothing: Use chemical-resistant gloves and clothing to protect the skin from direct contact with this substance.
- Safe Procedures:
- Establish safe work procedures, including the proper handling and storage of Thionyl chloride.
- Use control measures such as ventilation systems, chemical hoods, to minimize exposure to Thionyl chloride vapors.
- Safety Training and Awareness:
- Occupational safety training for workers on the risks of Thionyl chloride and how to protect themselves.
- Increase awareness of occupational safety and instruct workers on how to handle emergency situations.
- Periodic Medical Examinations:
- Conduct periodic medical check-ups to monitor workers’ health and detect early any health problems that may be related to Thionyl chloride exposure.
- Limit Exposure and Use Alternatives:
- If possible, limit the use of Thionyl chloride by substituting it with safer, less hazardous substances.
Periodically organize occupational environment monitoring in factories and enterprises, collect and analyze factors harmful to workers, thereby adjusting to reduce hazard levels to prevent occupational diseases for them.
7. Nationwide 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, ensuring accuracy and reliability.
REGISTER FOR OCCUPATIONAL ENVIRONMENT MONITORING SERVICE
In addition to providing monitoring services, the center also supports clients in planning, handling, and tracking occupational environment issues. With the motto “customer-centric,” the center focuses on customer satisfaction, meets all customer needs, and commits 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 customers with the best and most suitable things possible.
- Along with a team of experienced and specialized Masters and Engineers with a desire to protect the environment and benefit businesses.

- Coming to 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 advantages.
8. Quotation for occupational environment monitoring
To help businesses conduct occupational environment monitoring professionally and effectively, Nam Viet provides our customers with a high-quality and reasonably priced quotation for occupational environment monitoring services.
- Our monitoring quotation provides detailed information about 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 commit to always offering the most competitive and reasonable prices on the market, and we are always ready to advise and answer any questions about monitoring services quickly and professionally.
- With Nam Viet’s monitoring quotation, customers can easily select service packages that suit their needs. We are committed to bringing our customers the highest satisfaction with professional service quality.

