2018-8-20

Hazardous reagents or hazardous chemicals, have burns, explosive, toxic, corrosive or radioactive and other dangerous properties.By friction, vibration, impact, catches fire, or under the influence of water be affected with damp be affected with damp, strong light irradiation, high temperature, contact with other substances, such as external factors, can cause strong combustion, explosion and poisoning, such as burns, deadly severe accident.In the purchase, storage and use of a variety of hazardous chemicals in the process, must strictly comply with the relevant provisions of the state and product manual provisions shall apply.There are several kinds of dangerous chemicals that may be used in middle school chemistry experiments. Features: volatile, easy to burn in case of fire; the mixture of steam and air reaches the explosion limit; in case of fire, spark, electric spark can occur violent explosion.