Dichloroisocyanuric acid (C3HO3N3Cl2) is a chemical commonly used in manufacturing plants, but it can cause serious health effects for workers if not properly controlled. This article will provide information on the risks and protective measures when exposed to this chemical.
1. What is Dichloroisocyanuric acid?
Dichloroisocyanuric acid (C3HO3N3Cl2) is a chemical compound belonging to the isocyanuric acid group, with a molecular structure consisting of three carbon (C) atoms, three nitrogen (N) atoms, three oxygen (O) atoms, and two chlorine (Cl) atoms. This chemical is often used in industries such as water disinfection, surface cleaning, and in hygiene products. With the chemical formula C3HO3N3Cl2, dichloroisocyanuric acid is known for its strong bactericidal and disinfecting capabilities, especially in water-related applications such as in swimming pools, drinking water systems, or wastewater treatment facilities.
Dichloroisocyanuric acid exists as a white powder or in tablet form, is highly stable, and dissolves easily in water. When dissolved, it releases chlorine (Cl2), a powerful disinfectant that helps kill bacteria, viruses, and other harmful microorganisms. This is why dichloroisocyanuric acid is favored in cleaning products, especially in applications that require killing bacteria or protecting surfaces from the invasion of pathogenic agents.
However, despite its effectiveness in disinfection, direct contact with dichloroisocyanuric acid without appropriate protective measures can be harmful to health, especially for workers who are in direct contact with this chemical in their work environment.
| No. | Chemical Name in Vietnamese | Chemical Name in English | HS Code | CAS Number | Chemical Formula |
| 1. | Axit diclo isocyanuric | Dichloroisocyanuric acid | 29336900 | 2782-57-2 | C3HO3N3Cl2 |
See more: chemical safety training service according to Decree 113/2017/ND-CP
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2. Where does Dichloroisocyanuric acid originate from in the production process?
This chemical can arise during the manufacturing process when plants producing cleaning products, disinfectants, or other industrial chemicals use raw materials containing isocyanuric acid. During production, dichloroisocyanuric acid is created through a chemical reaction between isocyanuric acid and chlorine. This process usually takes place under controlled temperature and pressure conditions to create a product with strong disinfecting capabilities.
In manufacturing plants, the handling of chemical raw materials and chemical reactions occur continuously, and this is where dichloroisocyanuric acid can be formed. This chemical may be used in final products such as swimming pool disinfectant tablets, bleach, or industrial cleaning agents. In addition, during production, chlorine gas or related chemical compounds may also be generated, increasing the risk of exposure to dichloroisocyanuric acid if not well controlled.

3. Industries that use Dichloroisocyanuric acid in production
This chemical is widely used in many industries due to its effective disinfecting and cleaning capabilities. One of the main industries that use dichloroisocyanuric acid is the chemical manufacturing industry, especially in the creation of disinfecting products such as swimming pool disinfectant tablets, bleach, or industrial cleaning agents. These products help kill bacteria, viruses, and other harmful microorganisms and are often used in water treatment systems or in construction projects with strict hygiene requirements.
In addition, the food processing industry also uses dichloroisocyanuric acid to disinfect water, equipment, and surfaces in food production processes. This chemical helps ensure that food products are produced in a clean and safe environment. In the textile industry, this chemical is also used to bleach fabrics and raw materials before proceeding to the next stages of the production process.
The healthcare sector is also an area that uses dichloroisocyanuric acid, especially in products for disinfecting medical instruments, hospitals, or healthcare facilities. The powerful disinfecting feature of this chemical helps protect the hospital environment from the invasion of pathogenic microorganisms.
4. How does Dichloroisocyanuric acid affect workers?
When in direct contact with this chemical, workers can experience serious health effects, especially when not adhering to proper occupational safety measures. This chemical can cause irritation to the skin, eyes, and respiratory tract. If the dust or vapor of dichloroisocyanuric acid is inhaled, workers may suffer from coughing, shortness of breath, or a feeling of chest tightness. Prolonged exposure or exposure to high concentrations can lead to more serious problems such as bronchitis, asthma, or other lung issues.
In addition, if dichloroisocyanuric acid comes into contact with the skin and is not washed off promptly, it can cause burns or ulcers. These burns can be severe, depending on the duration and level of contact. When it gets into the eyes, this chemical can cause conjunctivitis, eye pain, and in severe cases, can lead to corneal damage, affecting vision.
Improper use or lack of protective measures when working with dichloroisocyanuric acid can cause acute poisoning if the chemical enters the body through the respiratory tract, ingestion, or through open wounds. This poisoning can cause nausea, headache, dizziness, or in more severe cases, fainting or internal organ damage.
5. Permissible safe concentration of Dichloroisocyanuric acid for human exposure
Currently, there are no specific regulations on the permissible safe concentration of dichloroisocyanuric acid in the work environment in Vietnam. However, according to Circular 10/2019/TT-BYT, the permissible time-weighted average (TWA) exposure limits for chemical factors at the workplace are specified in detail. To ensure the safety of workers when exposed to this chemical, it is necessary to adhere to occupational safety measures and refer to the manufacturer’s guidelines.

On a basic level, when working in an industrial environment, it is important to comply with safety standards and limit exposure to Dichloroisocyanuric acid. 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 minimize the effects of Dichloroisocyanuric acid on worker health
To minimize the effects of dichloroisocyanuric acid on worker health, protective measures are essential during the production and use of this chemical. First and foremost, providing personal protective equipment to workers is very important, including dust masks, safety goggles, gloves, and protective clothing. This equipment helps limit direct contact with the chemical, protecting the skin, eyes, and respiratory tract from harmful effects.
Secondly, manufacturing plants need to establish an effective ventilation system in the work area to help reduce the concentration of dichloroisocyanuric acid vapor or dust in the air. This is particularly important in enclosed areas or places with direct contact with the chemical, to ensure fresh air for workers. Toxic fume extraction devices or air filtration systems should be maintained and checked regularly to ensure their effectiveness.
In addition, training and raising awareness for workers about the health risks when working with dichloroisocyanuric acid is very necessary. Workers need to be instructed on safety measures, how to handle incidents, and hygiene procedures after working with the chemical. This helps to minimize the risk of long-term exposure and creates a safer working environment.
Finally, conducting periodic health checks for workers exposed to dichloroisocyanuric acid is necessary. Health examinations help to detect early signs of poisoning or chemical-related diseases, thereby allowing for timely treatment methods.
Occupational safety training: Workers need to be trained and educated about 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 workplace environmental monitoring in factories and enterprises, collecting and analyzing factors harmful to workers, and from there, adjusting to reduce the level of harm to prevent occupational diseases for them.
7. National Workplace Environmental Monitoring Center
Nam Viet’s Workplace Environmental Monitoring Center is a professional unit for 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 customers in planning, handling, and tracking workplace environmental issues. With the motto “the customer is the center,” the center is concerned with customer satisfaction, meeting 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 workplace environmental monitoring in Ho Chi Minh City with the following objectives:
- We always value our brand reputation and the quality of our products and services.
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- Along with a team of experienced 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 with experts in the field of monitoring. At the same time, you will get the best cost incentives.
8. Quotation for Workplace Environmental Monitoring
To help businesses carry out workplace environmental monitoring in a professional and effective manner, Nam Viet provides our customers with a quality and reasonably priced quotation for workplace environmental monitoring services.
- 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. You 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 in the quickest and most professional manner.
- With Nam Viet’s quotation, you can easily choose the service packages that suit your needs. We are committed to bringing you the highest satisfaction with our professional service quality.

