When working with hazardous chemicals, it is very important to wear appropriate protective clothing to effectively prevent adverse reactions. If you do not wear protective clothing, the following measures can reduce the risk: 1. **Avoid direct contact**: Try to avoid direct contact with chemicals and use tools or equipment to operate chemicals. 2. **Maintain ventilation**: Ensure that the working environment is well ventilated to prevent the accumulation of toxic gases or vapors. 3. **Use protective equipment**: Even if you do not have complete protective clothing, you should wear necessary personal protective equipment such as gloves, goggles and masks. 4. **Be familiar with chemical information**: Understand the safety data sheet (SDS) of the chemicals you are exposed to, and understand their hazards and emergency treatment measures. 5. **Keep skin dry and clean**: Avoid chemicals from contacting the skin. If accidentally contacted, rinse immediately with plenty of water. 6. **Check equipment regularly**: Ensure that safety equipment in the laboratory or workplace, such as flushers, fire extinguishers, etc., are working properly. 7. **Establish an emergency response plan**: Understand and prepare emergency measures, such as the process for handling toxic substances when they leak. 8. **Follow operating procedures**: Strictly follow operating procedures to prevent unnecessary risks. Once again, wearing appropriate protective clothing is the most effective safety measure when working with hazardous chemicals, and other alternative methods should be avoided as much as possible to ensure personal safety.