chemical wholesalers' temperature requirements
The temperature requirements of chemical wholesalers mainly depend on the types and properties of the chemicals they operate, but the general safety standard is that the warehouse temperature should not exceed 30 ℃.
This requirement is mainly based on the following points:
Flammable and explosive chemicals: such as alcohol, acetone, and other flammable liquids, which have a low flash point and are prone to evaporate and form flammable vapors in high temperature environments, increasing the risk of fire or explosion. Therefore, the storage environment temperature should be controlled below 30 ℃ to reduce the risk of volatilization and thermal decomposition.
Oxidizing chemicals, such as nitrates and potassium permanganate, may decompose and release oxygen at high temperatures, exacerbating combustion reactions. Generally, it is required to control the storage temperature below 30 ℃, and some oxidants containing crystal water (such as ammonium nitrate) need to avoid high temperatures that may cause deliquescence or failure.
Spontaneous combustion and flammable solids: such as yellow phosphorus, nitrocellulose, etc. Yellow phosphorus can spontaneously ignite in the air and needs to be stored under water seal. The storage temperature should be controlled at 28-30 ℃; Nitrocellulose requires 30% ethanol as a stabilizer, and the storage temperature should also be below 30 ℃.
Toxic and corrosive substances: such as cyanide, bromine, hydrogen peroxide, etc., high temperatures may accelerate their decomposition or react with air to produce toxic gases (such as hydrogen cyanide), or cause volatile corrosive substances to escape. The temperature of most toxic substance warehouses should not exceed 32 ℃, while easily decomposable substances such as hydrogen peroxide are recommended to be controlled at 25-28 ℃.
Compressed and liquefied gases: such as liquid chlorine, liquid ammonia and other steel cylinders, the warehouse temperature should not exceed 32 ℃ to prevent pressure rise from causing leakage or explosion, and humidity should be controlled to prevent steel cylinder corrosion.
In addition, according to the "General Rules for the Storage of Commonly Used Hazardous Chemicals" (GB 15603-1995), the temperature of chemical warehouses should usually be controlled between 15-35 ℃, but for safety redundancy reasons, the industry generally adopts a stricter upper limit standard of 30 ℃. For special drugs or biological reagents, if cold chain transportation is involved, it is necessary to maintain a temperature of 2-8 ℃ or lower to ensure stability.
In summary, 30 ℃ is the temperature threshold for storing most hazardous chemicals. Wholesalers should be equipped with temperature and humidity monitoring systems, ventilation equipment, and explosion-proof air conditioning to ensure a controllable environment around the clock.
