Cadmium sulfide (CdS) is a common chemical in many manufacturing industries, but few people know that it can cause serious effects on workers’ health. This article will help you better understand the risks and protective measures for those working in an environment where Cadmium sulfide is used.
1. What is Cadmium sulfide?
Cadmium sulfide (CdS) is a chemical compound with the molecular formula CdS, formed from the combination of cadmium (Cd) and sulfur (S). It is a solid compound that is yellow or orange, depending on its crystal structure. CdS is widely known in industries such as the manufacturing of liquid crystal displays, solar cells, and optical materials.
This substance can exist in powder or crystalline form and has semiconductor properties. When used in industrial applications, cadmium sulfide has the ability to absorb light and luminesce, so it is used in electronic devices, optical sensors, and other light-related products.
However, cadmium sulfide is a toxic substance if not handled properly, as cadmium is a heavy metal that can accumulate in the body and cause many serious health problems. Therefore, understanding its nature and its effects on human health is extremely important in work environments where this compound is used.
| No. | Chemical Name in Vietnamese | Chemical Name in English | HS Code | CAS Number | Chemical Formula |
| 1. | Cadimi sulfua | Cadmium sulfide | 28309010 | 1306-23-6 | CdS |
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2. Where does Cadmium sulfide originate from in the production process?
During the production process, cadmium sulfide can originate from various sources, mainly related to the processing and use of raw materials containing cadmium and sulfur. One of the main sources is in the cadmium mining and processing industries. When cadmium is extracted from ore, this process often produces sulfide compounds of cadmium, including cadmium sulfide.
In addition, in the manufacturing processes of electronic devices, liquid crystal displays, and optical products, cadmium sulfide is also used directly. When these materials are processed, cut, or in high-temperature stages, cadmium sulfide can be dispersed as dust or gas, causing air pollution in the work environment.
Furthermore, cadmium sulfide can also be generated in recycling activities, where electronic products, batteries, or other items containing cadmium are processed.

3. Industries that use Cadmium sulfide in production
Cadmium sulfide is used in many different industries, mainly in industrial fields that require semiconductor, optical, and electronic material compounds. One of the industries that uses cadmium sulfide the most is the manufacturing of electronic devices, especially in liquid crystal displays (LCDs), photovoltaic cells, and optical electronic components. This substance has the ability to absorb light and convert it into energy, so it is very popular in light-related technologies.
In addition, cadmium sulfide is also used in the solar panel manufacturing industry, where it plays an important role in creating photovoltaic cells to convert light into electricity. This compound also appears in the production of luminescent materials and optical materials, especially in optical sensor applications and lighting devices.
The paint and ink manufacturing industry is also a field that uses cadmium sulfide, especially in creating colors like yellow and orange, thanks to the natural coloring ability of this compound. Products containing cadmium sulfide are also used in the manufacturing of glass, ceramics, and special building materials, helping to enhance the durability and heat resistance of the final products.
4. How does Cadmium sulfide affect workers?
Exposure to cadmium sulfide can cause many negative health effects for workers, especially without safety precautions. One of the biggest risks is cadmium poisoning, as cadmium is a heavy metal that can accumulate in the body over time. When workers inhale cadmium sulfide dust or come into direct contact with this compound through the skin, cadmium can enter the body and cause serious health problems.
In the long term, the accumulation of cadmium in the body can cause damage to internal organs, especially the kidneys and lungs. Workers may suffer from kidney failure, high blood pressure, or respiratory problems, including coughing, shortness of breath, and lung damage. Research also indicates that cadmium can affect the skeletal system, making bones weak and prone to fractures.
In addition, cadmium sulfide can also have adverse effects on the nervous system, affecting memory and concentration. Some studies have also linked cadmium to the risk of cancer, especially lung cancer and prostate cancer, as cadmium has the ability to cause gene mutations and disrupt cell development.
Particularly for those working in high-exposure environments such as electronics, solar panel, or glass manufacturing plants, the risk of these diseases is even higher if appropriate preventive and protective measures are not in place.
5. Permissible safe concentration of Cadmium sulfide for human exposure
To protect workers’ health when exposed to cadmium sulfide, health and occupational safety organizations have established permissible safe concentration levels for this chemical in the workplace. The maximum permissible concentration of cadmium sulfide in the air is regulated by agencies such as the World Health Organization (WHO) and the U.S. Occupational Safety and Health Administration (OSHA). Accordingly, the concentration of cadmium in the air should not exceed 0.005 mg/m³ during a standard work hour. This level is calculated based on studies of the health effects of cadmium on humans, to ensure that workers are not overexposed.
Although regulations on safe cadmium sulfide concentrations have been set, long-term exposure to cadmium, even at low levels, can still cause adverse health effects.

On a basic level, if working in an industrial environment, it is important to comply with safety standards and limit exposure to Cadmium sulfide. 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 effects of chemical substances.
6. Measures to mitigate the health effects of Cadmium sulfide on workers
To minimize the impact of cadmium sulfide on workers’ health, a series of preventive and strict control measures must be implemented in the workplace. One of the most important steps is to minimize exposure to this compound by improving the ventilation system in work areas. An effective ventilation system will help reduce the concentration of cadmium sulfide in the air, thereby minimizing the possibility of workers inhaling cadmium dust.
In addition, workers should use personal protective equipment such as dust masks, gloves, and protective clothing to limit direct contact with cadmium sulfide. Providing adequate protective equipment for workers is a crucial factor in ensuring health and safety throughout the work process.
Companies and manufacturers also need to implement regular monitoring measures for cadmium exposure levels in the work environment. This may include checking the concentration of cadmium sulfide in the air, conducting periodic health checks for workers to detect early signs of cadmium poisoning, as well as assessing risk factors in the production process.
Another mitigation measure is to improve production processes and use new technologies, such as cooling and dust suppression technologies, which help limit the generation of cadmium sulfide in the air. These measures not only protect the health of workers but also reduce the impact of cadmium on the surrounding environment.
Finally, education and training on occupational safety play an important role in raising workers’ awareness of the risks from cadmium sulfide and how to prevent them. Organizing training courses on health and safety in the workplace is an indispensable element to protect workers from the dangerous effects of cadmium sulfide.
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, to collect and analyze factors harmful to workers, thereby adjusting to reduce the level of hazard 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 the monitoring and measurement of occupational environment quality across all provinces in Vietnam. With a team of experienced monitoring specialists, the center uses modern measurement equipment to ensure accuracy and reliability.
REGISTER FOR OCCUPATIONAL ENVIRONMENT MONITORING SERVICES
In addition to providing monitoring services, the center also supports clients in planning, addressing, and tracking occupational environment issues. With the motto “the customer is the center,” the center is concerned with 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 options possible.
- With a team of experienced Masters and Engineers who are passionate about protecting the environment and benefiting businesses.

- By choosing 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 in a professional and effective manner, Nam Viet provides our customers with a quality and reasonably priced quotation for occupational environment monitoring services.
- Our 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. Our customers can be completely confident in 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 monitoring services quickly and professionally.
- With Nam Viet’s quotation, customers can easily choose service packages that suit their needs. We are committed to providing our customers with the highest satisfaction through professional service quality.

