Sulfur tetrafluoride (SF₄) is a toxic chemical commonly used in manufacturing plants. This article will explore the negative impacts of SF₄ on the health of workers from long-term exposure, along with the necessary protective measures in the work environment.
1. What is Sulfur tetrafluoride (Sulfur fluoride)?
Sulfur tetrafluoride (SF₄) is a chemical compound with the formula SF₄, in which a sulfur (S) atom is bonded to four fluorine (F) atoms. It is a colorless gas with a characteristic odor and is highly toxic. SF₄ is often used in industrial applications, especially in the synthesis of fluorinated compounds.
Sulfur tetrafluoride has a see-saw molecular geometry, with sulfur at the center and the fluorine atoms attached. This structure contributes to the special chemical properties of SF₄, such as its ability to react strongly with water and other substances to form sulfur dioxide (SO₂) and hydrogen fluoride (HF).
SF₄ is commonly used in industry to produce fluorinating compounds and is also a raw material in the synthesis of some specialized materials. However, due to its toxic nature and strong reactivity, the use of SF₄ in production requires strict safety measures.
| No. | Chemical Name in Vietnamese | Chemical Name in English | HS Code | CAS Number | Chemical Formula |
| 1. | Lưu huỳnh tetraflorua | Sulfur tetrafluoride (Sulfur fluoride) | 28129000 | 7783-60-0 | SF₄ |
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2. Where does Sulfur tetrafluoride (Sulfur fluoride) originate from in the production process?
During production, SF₄ is mainly created when sulfur reacts with fluorine (F₂) under high-temperature conditions. This reaction usually takes place in a controlled, enclosed environment to minimize the risk of unwanted reactions and the release of the toxic gas. This process requires special equipment to maintain the stability of fluorine and sulfur, as well as to control the reaction parameters.
In addition, SF₄ can also be generated in some other chemical production processes, especially when using compounds containing sulfur or fluorine. In fluorochemical manufacturing plants, SF₄ may be created as a byproduct during the processing or synthesis of other fluorinated compounds. The generation of SF₄ in these processes depends on the specific reaction conditions and the raw materials used.

3. Industries that use Sulfur tetrafluoride (Sulfur fluoride) in production
SF₄ is used in several chemical industries, particularly in processes for producing fluorinated compounds. The plastics and composite materials industry is one of the main sectors that use SF₄ to create fluorine compounds for the production of plastics with special properties, such as heat-resistant and flame-retardant plastics.
Furthermore, SF₄ is also applied in the pharmaceutical industry to synthesize compounds containing fluorine for the production of drugs and specialized medical materials. The electronics industry also uses SF₄ to manufacture electronic components and semiconductor parts, as fluorination can help improve the insulating properties and durability of materials.
In the machinery and equipment manufacturing industry, SF₄ is also used to synthesize fluorinated compounds for the production of heat-resistant and corrosion-resistant parts. Other industries, such as the production of anti-corrosion materials and the manufacturing of fluorine-containing compounds, also use SF₄ in their production processes.
4. How does Sulfur tetrafluoride (Sulfur fluoride) affect workers?
When workers are exposed to SF₄, this substance can cause many adverse health effects. SF₄ is a very toxic gas and can cause severe irritation to the respiratory system. Inhaling SF₄ gas can lead to symptoms such as coughing, shortness of breath, and chest pain. Long-term exposure to SF₄ can damage the lungs, and even cause serious problems like chemical pneumonia or lung tissue damage.
In addition, SF₄ can also cause negative effects on the skin and eyes. If it comes into direct contact with the skin, SF₄ can cause severe burns or skin irritation. If the substance gets into the eyes, it can lead to keratitis, eye pain, and eye damage. When poisoned by SF₄, workers may also experience symptoms of nervous system toxicity such as dizziness, nausea, and even loss of consciousness.
These health effects are particularly severe in unsafe production environments where SF₄ may exist at high concentrations in the air or can come into direct contact with workers.
5. Permissible safe concentration of Sulfur tetrafluoride (Sulfur fluoride) for human exposure
The permissible safe concentration for exposure to SF₄ is regulated by international health and occupational safety organizations such as OSHA (U.S. Occupational Safety and Health Administration) and ACGIH (American Conference of Governmental Industrial Hygienists). According to these standards, the concentration of SF₄ in the air should not exceed 0.1 ppm (parts per million) during a workday to ensure worker safety. This concentration is determined based on its potential to cause irritation and toxic effects on the respiratory system and other human organs.
Furthermore, higher concentrations can cause serious health problems, so protective measures such as ventilation, personal protective equipment, and procedures for monitoring gas concentrations in the air are necessary to keep SF₄ levels within the permissible range. Adhering to these safe concentration regulations is crucial to protecting the health of workers in production environments where SF₄ is used.

On a basic level, if working in an industrial environment, it is important to adhere to safety standards and limit exposure to Sulfur tetrafluoride. 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 effects of Sulfur tetrafluoride (Sulfur fluoride) on workers’ health
To minimize the health effects of SF₄ on workers, safety and protective measures in the workplace are extremely important. First and foremost, controlling and minimizing the concentration of SF₄ in the air is one of the most critical measures. Effective ventilation systems must be installed in production areas to ensure that the concentration of SF₄ does not exceed the permissible level, while maintaining a well-ventilated workspace.
In addition, the use of personal protective equipment such as chemical-resistant respirators, safety goggles, and gloves is necessary to prevent direct contact with SF₄. Special protective suits should also be provided to workers in areas with high concentrations of SF₄ to protect their skin and eyes from the harmful effects of the toxic gas.
Furthermore, occupational safety training for workers is very important. They need to be trained on the dangers of SF₄, how to recognize symptoms of poisoning, and the steps to take in case of an incident. Establishing emergency procedures and ensuring that adequate medical equipment is available in the production area are also factors that help minimize risk.
Finally, regular inspection and monitoring of equipment, production processes, and the concentration of SF₄ gas in the air help ensure that protective measures are always effective and that workers’ health is maximally protected.
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
The occupational environment monitoring center of Nam Viet is a professional unit specializing in monitoring and measuring the quality of the occupational 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 assists 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 commits 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. At the same time, you will get the best cost incentives.
8. Quotation for occupational environment monitoring
To help businesses conduct occupational environment monitoring professionally and effectively, Nam Viet offers our valued customers a price list for occupational environment monitoring services that is high-quality and reasonably priced.
- 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 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.

