Butyl mercaptan, also known as Butanethiol, is an organic compound containing a sulfur atom with a rather distinctive odor. Used in many industries, Butyl mercaptan often appears during the production and use of chemical products. However, exposure to this substance can significantly affect the health of workers. In this article, we will discuss the effects of Butyl mercaptan on human health in the work environment and the safety measures that need to be applied to protect workers from these negative effects.
1. What is Butyl mercaptan (Butanethiol)?
Butyl mercaptan, also known as Butanethiol, is an organic compound containing a sulfur atom. Its chemical formula is C4H10S, where C represents carbon, H represents hydrogen, and S represents sulfur. This indicates that this compound is primarily composed of four carbon atoms, ten hydrogen atoms, and one sulfur atom.
Butyl mercaptan often has a rather unpleasant and distinctive odor, making it often used in applications where a warning odor is needed to alert to the presence of this substance. It also frequently appears during the production and use of chemical products.
For workers, exposure to Butyl mercaptan can create health problems, and therefore, understanding its properties and safety when working with this substance is important.
| No. | Chemical name in Vietnamese | Chemical name in English | HS Code | CAS Number | Chemical Formula |
| 1. | Butyl mercaptan (Butanethiol) | Butyl mercaptan (Butanethiol) | 29309090 | 109-79-5 | C4H10S |
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2. Where does Butyl mercaptan (Butanethiol) originate from in the production process?
Butyl mercaptan (Butanethiol) often appears as a byproduct in the production process of many chemical products, especially in the oil and gas industry.
One of the main sources of Butyl mercaptan generation is the processing of crude oil and natural gas. When crude oil is processed to produce fuel or other chemical products, Butyl mercaptan can be generated as a byproduct of chemical processes related to sulfur. It can also appear during the extraction and refining of crude oil.
In addition, Butyl mercaptan can also be produced through special chemical processes such as hydrodesulfurization (HDS), a method to reduce the amount of sulfur in crude oil and natural gas to meet quality and environmental safety standards.
The production and use of Butyl mercaptan both require safety measures to ensure the protection of workers and the environment from the negative effects of this substance.

3. Industries that use Butyl mercaptan (Butanethiol) in production
Butyl mercaptan, or Butanethiol, is often used in some industries due to its properties, especially its characteristic odor, which can provide some benefits for specific applications. Here are some industries that may use Butyl mercaptan in their production processes:
- Oil and Gas: Butyl mercaptan can appear as a byproduct in the processing of crude oil and natural gas. It is often used to create an odor to warn of the presence of flammable or potentially dangerous gases.
- Chemicals: Butyl mercaptan can also be used in some chemical applications, such as in the production of additives, odorants, or other organic compounds.
- Cleaning Product Manufacturing: Some cleaning products may use Butyl mercaptan to add fragrance to the product.
- Agriculture: There may be use of Butyl mercaptan in some agricultural applications, such as in the production of fertilizers or other products.
- Food Processing: Some foods or flavorings may use Butyl mercaptan as an ingredient to create a characteristic odor.
Note that the use of Butyl mercaptan is sometimes tightly controlled due to its potentially hazardous nature, and safety measures must be applied during the production and use of this substance.
4. How does Butyl mercaptan (Butanethiol) affect workers?
Butyl mercaptan (Butanethiol) can significantly affect the health of workers if they are exposed to it unsafely. Here are some potential effects:
- Eye and Respiratory Irritation: Butyl mercaptan can cause irritation to the eyes and respiratory tract if inhaled or in contact with the skin. This can lead to problems such as redness, watering, and discomfort.
- Causes Nausea and Edema: Long-term exposure to Butyl mercaptan can cause nausea and edema. With increased exposure, it can affect liver and kidney function.
- Causes Fatigue and Headaches: Butyl mercaptan vapor can also cause fatigue and headaches if workers are exposed in an environment with high concentrations.
- Fire and Explosion Risk: Butyl mercaptan can create a fire and explosion risk if it comes into contact with air and flammable substances.
- Hazardous to the Digestive System: If workers are exposed to Butyl mercaptan through the digestive tract, it can affect the digestive system.
To protect workers, work processes must adhere to safety measures, including wearing personal protective equipment such as masks, safety glasses, and protective clothing, as well as safety equipment during the production and transportation of Butyl mercaptan. In addition, adequate safety training and information are important to minimize risks for workers.
5. Permissible safe concentration of Butyl mercaptan (Butanethiol) for human exposure
The permissible safe concentration of Butyl mercaptan (Butanethiol) for human exposure is typically determined by occupational safety and health regulatory agencies, such as the World Health Organization (WHO), the U.S. Environmental Protection Agency (EPA), or similar national organizations. These safety limits are usually established based on the results of scientific research and testing, to ensure that exposure to this substance does not harm human health.
The safe concentration can vary depending on the route of exposure (inhalation, skin contact, oral or digestive contact), duration of exposure, and type of work. For Butyl mercaptan, it is generally kept at a low level to avoid negative health effects.
At a basic level, if working in an industrial environment, adhering to safety standards and limiting exposure to Butyl mercaptan (Butanethiol) 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.

6. Measures to minimize the health effects of Butyl mercaptan (Butanethiol) on workers
To minimize the effects of Butyl mercaptan (Butanethiol) on workers’ health, safety measures and risk management must be implemented. Here are some important measures:
- Safety Management System:
- Develop and implement a work environment safety management system.
- Identify risks of exposure to Butyl mercaptan during production and use.
- Personal Protective Equipment (PPE):
- Use personal protective equipment such as masks, safety glasses, gloves, and protective clothing to protect skin and respiratory tract from direct contact with Butyl mercaptan.
- Ensure that all types of protection meet specific safety standards.
- Safety Notification System:
- Establish a safety notification system to warn workers about the presence of Butyl mercaptan in the work environment.
- Safe Work Procedures:
- Train workers on safe work procedures when handling Butyl mercaptan.
- Apply risk control measures, such as using ventilation systems, vacuum extraction, or devices to minimize the odor release of this substance.
- Periodic Inspection:
- Conduct periodic checks of Butyl mercaptan concentrations in the work environment to ensure exposure levels are controlled within safe limits.
- Proper Classification and Storage:
- Store and handle Butyl mercaptan according to safety regulations to prevent leaks and unsafe exposure.
- Periodic Medical Examinations:
- Conduct periodic medical examinations to monitor workers’ health and detect early any health problems related to Butyl mercaptan exposure.
- Periodically organize occupational environment monitoring in factories and enterprises, collect and analyze harmful factors for 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 occupational environment quality in all provinces throughout 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, addressing, and tracking occupational environment issues. With the motto “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 personnel, Nam Viet’s monitoring center has been and is becoming 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.

- With Nam Viet’s 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 provides our customers with a quality and reasonably priced quotation for occupational environment monitoring services.
- Our monitoring 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 commit to always offering the most competitive and reasonable prices on the market, and we are also always ready to consult and answer any questions about 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 service quality.

