2,2,2-trichloro-1,1-bis(4-chlorophenyl)ethanol (C₁₄H₉Cl₅O) is a chemical used in many industries, especially in the production of pesticides. However, long-term exposure to this chemical can cause serious health effects for workers. This article will explore in detail the risks and necessary protective measures when working with 2,2,2-trichloro-1,1-bis(4-chlorophenyl)ethanol in an industrial environment.
1. What is 2,2,2-trichloro-1,1-bis(4-chlorophenyl)ethanol?
The compound with the chemical formula C₁₄H₉Cl₅O is an organic compound belonging to the phenyl group, containing five chlorine atoms in its structure. The name of this compound is 2,2,2-trichloro-1,1-bis(4-chlorophenyl)ethanol, a synthetic pesticide. It is widely known by other trade names such as Dicofol. This compound is a colorless or white substance, is volatile in the environment, and is mainly used in agriculture to control harmful insect species on crops.
The molecular structure of this compound includes a phenyl group (C₆H₅) attached to chlorine atoms and a hydroxyl group (-OH). These features make it effective in killing various types of insects, but they also pose potential risks to worker health and the environment, as the properties of the chlorine compounds in the structure can cause long-term toxicity if not handled properly.
| No. | Chemical Name in Vietnamese | Chemical Name in English | HS Code | CAS Number | Chemical Formula |
| 1. | Dicofol | 2,2,2-trichloro-1,1-bis(4-chlorophenyl)ethanol | 29062900 | 115-32-2 | C₁₄H₉Cl₅O |
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2. What are the sources of 2,2,2-trichloro-1,1-bis(4-chlorophenyl)ethanol during production?
During the production process, this substance is mainly created from the chlorination of DDT, a common pesticide. This process uses azobisisobutyronitrile as a catalyst and the chloride is hydrolyzed under the action of formic acid. This method leads to the formation of the compound, which is then purified to its final form, 2,2,2-trichloro-1,1-bis(4-chlorophenyl)ethanol.

3. Industries that use 2,2,2-trichloro-1,1-bis(4-chlorophenyl)ethanol in production
In production, the compound 2,2,2-trichloro-1,1-bis(4-chlorophenyl)ethanol is mainly used in the agricultural sector, specifically for manufacturing plant protection products. It is an important active ingredient in the production of pesticides, helping to control pests that are harmful to crops, such as moths, caterpillars, and other insects. This compound is often used in liquid or powder pesticide formulations and is effective at eradicating many harmful insect species without damaging the crops.
In addition, this product is also used in other industrial fields related to chemicals and pharmaceutical production, although its main impact is in the agricultural industry. The presence of this compound in pesticide formulas may be related to requirements for long-lasting effectiveness and resistance to the natural degradation of the chemical in the environment.
4. How does 2,2,2-trichloro-1,1-bis(4-chlorophenyl)ethanol affect workers?
This chemical seriously affects the health of workers upon exposure, especially in work environments where it is used. Studies have shown that prolonged contact with this substance can cause serious health problems, particularly for the nervous system, liver, and kidneys. It can cause acute poisoning when ingested or through direct skin contact, leading to symptoms such as vomiting, dizziness, and headaches.
In addition, this substance is also an endocrine disruptor, affecting reproductive capabilities and fetal development. These harmful effects can be long-lasting and accumulate over generations if proper preventive measures are not taken. It has also been listed as a potential carcinogen, and long-term exposure can lead to damage to internal organs.
Protecting the health of workers when handling this substance is extremely important. Workers must use adequate personal protective equipment and adhere to safety regulations throughout the work process to minimize the risks posed by this chemical.
5. Permissible safe concentration of 2,2,2-trichloro-1,1-bis(4-chlorophenyl)ethanol for human exposure
The permissible safe concentration for exposure to 2,2,2-trichloro-1,1-bis(4-chlorophenyl)ethanol in the workplace must be clearly regulated to protect workers’ health. According to standards from the European Union (EU) and health organizations, the maximum exposure level of this chemical must be strictly controlled, especially to minimize the risk of toxicity to the skin and respiratory system.
2,2,2-trichloro-1,1-bis(4-chlorophenyl)ethanol is classified as an acutely toxic substance that can be harmful through skin contact and ingestion. According to chemical safety regulations, the maximum exposure level of this substance in the workplace air must be controlled so as not to exceed a threshold that is dangerous to workers. Parameters such as the maximum allowable concentration (MAC) in the air have been established to minimize the risk of poisoning.

On a basic level, when working in an industrial environment, it is important to adhere to safety standards and limit exposure to Dicofol. 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 mitigate the health effects of 2,2,2-trichloro-1,1-bis(4-chlorophenyl)ethanol on workers
To mitigate the health effects of 2,2,2-trichloro-1,1-bis(4-chlorophenyl)ethanol on workers, protective measures must be strictly applied. First, workers should be fully equipped with personal protective equipment, such as respirators, gloves, and specialized protective clothing to minimize direct contact with the chemical. In conjunction with this, work procedures must be tightly organized, ensuring the work environment has a good ventilation system to remove chemical vapors. Additionally, replacing hazardous chemicals with less dangerous alternatives is also an effective method for reducing health risks for workers.
Another important measure is to train and educate workers about the risks and safe methods when working with hazardous chemicals. It is necessary to conduct regular health checks for workers and monitor the concentration of chemicals in the work environment to promptly detect any abnormal signs. At the same time, implementing waste reduction and chemical waste management measures also contributes significantly to protecting the health of workers and the work environment.
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 conduct occupational environmental monitoring in factories and enterprises, collecting and analyzing harmful factors for workers, thereby adjusting to reduce hazard levels to prevent occupational diseases for them.
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