Definition of substances with a low ignition point

Substances with a low ignition point include: 1. Solids with a low ignition point include red phosphorus, sulfur, rosin, camphor, magnesium powder, etc. 2. Flammable solids are substances that exist in a solid state at room temperature, have a low ignition point, and can ignite when exposed to fire, heat, impact, friction, or contact with oxidizing agents. Such substances are referred to as flammable solids. Among them, the lower the ignition point and the greater the degree of dispersion, the greater the danger of flammable solids; in particular, powdered flammable materials, when mixed with oxygen in the air in a certain proportion, can explode upon exposure to an open flame. 3. Flammable solids burn rapidly and are difficult to extinguish. Therefore, when storing flammable solids, care must be taken to keep the quantity moderate; the stock in one warehouse should not be excessive, and there must be a certain safe distance between it and adjacent warehouses. 4. Flammable liquids that may be stored in middle school chemistry experiments include methanol, ethanol, petroleum ether, diethyl ether, propane, benzene, toluene, xylene, carbon disulfide, turpentine, ethyl acetate, etc. Flammable solids include sodium, potassium, calcium metals, celluloid, nitrocellulose, white phosphorus, aluminum powder, magnesium powder, rosin, and others. It is a warehouse for storing acidic substances, and the storage of flammable solids is not permitted. In case of a fire, it can be extinguished using fogged water, sand, carbon dioxide, or dry chemical extinguishing agents.