2-Chloroacetaldehyde (C2H3ClO) is a common chemical in industrial production, but few know that it can cause serious health effects for workers. This article will help you better understand the health risks of exposure to this chemical in the workplace.
1. What is 2-Chloroacetaldehyde?
2-Chloroacetaldehyde, with the chemical formula C2H3ClO, is an organic compound belonging to the aldehyde group. It is formed from the combination of an ethyl group (C2H5) and a chlorine atom (Cl) attached to the alpha position of the acetaldehyde molecule. With this structure, 2-Chloroacetaldehyde has the characteristic chemical properties of an aldehyde, including the ability to react strongly with nucleophilic groups such as amines and alcohols.
This substance is often used in chemical synthesis processes, such as in the production of pesticides, pharmaceuticals, and other compounds with industrial applications. However, due to the presence of the chlorine group in its structure, 2-Chloroacetaldehyde can also easily react with other substances in the environment, leading to the creation of compounds that can be harmful to health if not handled carefully.
| No. | Chemical Name in Vietnamese | Chemical Name in English | HS Code | CAS Number | Chemical Formula |
| 1. | Clo axetandehit | 2-Chloroacetaldehyde | 29130000 | 107-20-0 | C2H3ClO |
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2. Where does 2-Chloroacetaldehyde originate from in the production process?
In industrial production, 2-Chloroacetaldehyde can originate from various sources, mainly related to chemical reactions in the manufacturing of organic compounds. One common source is from the synthesis of chemical products containing aldehyde and chlorine groups. When these chemicals react under appropriate temperature and pressure conditions, 2-Chloroacetaldehyde can be produced.
In addition, in factories producing pesticides, pharmaceuticals, and plastics, 2-Chloroacetaldehyde can also be a byproduct in chemical synthesis reactions. These reactions often involve the use of dechlorinating agents or chlorine-containing compounds to create organic substances with high industrial applicability. When these substances decompose or react incompletely, 2-Chloroacetaldehyde can be generated as a byproduct.

3. Industries that use 2-Chloroacetaldehyde in production
2-Chloroacetaldehyde is used in many industries, especially in the fields of chemical, pharmaceutical, and agricultural production. In the chemical industry, this compound is often used as a raw material in the synthesis of organic chemicals, including detergents, pesticides, and other products. Due to its reactivity with other groups in its molecular structure, 2-Chloroacetaldehyde plays a crucial role in creating new compounds with high applicability.
Furthermore, in the pharmaceutical industry, 2-Chloroacetaldehyde is also used in the synthesis of some drug compounds, particularly those with antibacterial, anti-inflammatory, or therapeutic effects. Due to its chemical properties, 2-Chloroacetaldehyde can be used to prepare substances with strong biological activity that can treat certain medical conditions.
In the agricultural industry, 2-Chloroacetaldehyde appears mainly in the production of pesticides and crop protection products. This compound can be used to create effective pesticides for killing insects and other pests that harm crops. Therefore, the agricultural industry is one of the sectors with a high level of exposure to 2-Chloroacetaldehyde.
4. How does 2-Chloroacetaldehyde affect workers?
When exposed to 2-Chloroacetaldehyde, workers can face many negative health effects, primarily due to the compound’s nature as an aldehyde containing a chlorine group. This chemical can enter the body through the respiratory tract, skin, or ingestion if not properly protected during work. People with long-term exposure to 2-Chloroacetaldehyde may experience respiratory problems such as coughing, shortness of breath, bronchitis, or even chronic lung diseases. This is particularly dangerous for those working in environments with high concentrations of this substance, such as in chemical, pharmaceutical, or pesticide manufacturing plants.
In addition, when 2-Chloroacetaldehyde comes into contact with the skin, workers may experience skin problems such as dermatitis, itching, or allergic reactions. This chemical can cause severe irritation, especially with direct skin contact over a long period or without adequate protection.
Furthermore, inhaling 2-Chloroacetaldehyde can cause nervous system problems, such as headaches, dizziness, or nausea. Studies show that long-term exposure to this chemical can lead to a risk of cancer or other serious diseases related to the nervous system and respiratory organs.
5. Permissible safe concentration of 2-Chloroacetaldehyde for human exposure
Determining the safe concentration of 2-Chloroacetaldehyde for human exposure is a crucial factor in protecting workers’ health in industrial environments. This concentration is usually regulated by occupational safety and health organizations such as OSHA (the U.S. Occupational Safety and Health Administration) or ACGIH (the American Conference of Governmental Industrial Hygienists).
Currently, there is no single globally recognized specific concentration level for all situations of exposure to 2-Chloroacetaldehyde, but these organizations often recommend a safe concentration level in the workplace air not to exceed 0.5 ppm (parts per million) during a normal workday, which is about 8 hours. However, this level may vary depending on factors such as the nature of the work, the ventilation of the work area, and the personal protective measures used by the worker.
In addition, studies on the long-term exposure and health effects of 2-Chloroacetaldehyde show that even if the concentration in the air does not exceed the permissible limit, prolonged or continuous exposure can still cause serious health problems.

At a basic level, when working in an industrial environment, adhering to safety standards and limiting exposure to Chloroacetaldehyde is important. 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 impact of 2-Chloroacetaldehyde on workers’ health
To minimize the impact of 2-Chloroacetaldehyde on workers’ health, a series of safety and preventive measures must be implemented in the workplace. First of all, improving ventilation in work areas is extremely important. A good ventilation system helps to reduce the concentration of chemicals in the air, thereby limiting the potential for worker exposure to 2-Chloroacetaldehyde. Air filters and ventilation fans should be kept in continuous operation and checked regularly to ensure their effectiveness in cleaning the air.
In addition, the use of personal protective equipment is an essential measure to prevent direct contact with the chemical. Workers should wear respirators, safety goggles, gloves, and protective clothing when working in an environment with a risk of exposure to 2-Chloroacetaldehyde. This protective equipment will help minimize the entry of the chemical through the respiratory tract, skin, and eyes, protecting the body from its harmful effects.
Furthermore, training and raising awareness among workers also play a crucial role in reducing risks. Workers need to be trained on safety measures when exposed to 2-Chloroacetaldehyde, how to recognize early signs of poisoning, and how to handle incidents when they occur. Safe work procedures also need to be clearly established, including regular checks of chemical concentrations in the air, along with measures to take when concentrations exceed permissible levels.
Finally, maintaining and complying with occupational health and safety regulations is an indispensable factor in minimizing the impact of 2-Chloroacetaldehyde. Production facilities must conduct regular health check-ups for workers to detect health-related problems early, allowing for timely and effective intervention.
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
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 to ensure accuracy and reliability.
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In addition to providing monitoring services, the center also assists clients in planning, handling, and tracking issues related to the occupational environment. With the motto “the 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 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:
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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 pricing 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 monitoring quotation, customers can easily choose service packages that suit their needs. We are committed to bringing our customers the highest satisfaction with professional quality service.

