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Chlorine is a non-metallic element and belongs to one of the halogens. Chlorine gas is yellow-green gas at normal temperature and pressure, and its chemical properties are very lively and toxic. Chlorine is widely distributed in nature in the form of chemical forms, and is also important for the physiological activities of the human body.

Chlorine is a yellow-green gas with a density greater than air (3.214 g/L), a melting point of ?101.0 ° C, and a boiling point of ?34.4 ° C. It has a strong pungent odor.

The free state of chlorine in nature exists in the atmosphere and is one of the main elements that destroy the ozone layer. Chlorine is decomposed by ultraviolet light into two chlorine atoms (free radicals). Most are usually in the form of chloride (Cl-), the most common being sodium chloride (salt, NaCl).

1, operation precautions

Strictly closed, providing adequate local exhaust and full ventilation. Operators must be specially trained to strictly follow the operating procedures. Operators are advised to wear an air respirator, wear a mask-type tape anti-drug, and wear rubber gloves. Keep away from fire, heat, and smoking in the workplace. Keep away from flammable and combustible materials. Prevent gas from leaking into the workplace air. Avoid contact with alcohol. Lightly load and unload during handling to prevent damage to cylinders and accessories. Equipped with the corresponding variety and quantity of fire-fighting equipment and leakage emergency treatment equipment.

2, storage precautions

Store in a cool, ventilated warehouse. Keep away from fire and heat. The temperature of the reservoir does not exceed 30 ° C, and the relative humidity does not exceed 80%. It should be stored separately from combustibles (combustibles), alcohols, and food chemicals. Avoid mixing. The storage area should be equipped with leakage emergency treatment equipment. The “five pairs” management system for extremely toxic substances should be strictly implemented.