Chemicals can either be useful or dangerous. This is why safety precautions are employed in all chemical laboratories and these stringent measures are only appropriate to avoid life-threatening mistakes. Generally, substances are harmless under the appropriate conditions. When we speak of appropriate conditions we are considering the proper storage, right temperature and pressure in the storage area, and the handling Forskningskemikalier Sverige . While handling and storage of chemicals should be done with care, the observance of precautions when mixing different substances is even more compelling.
Watch all the household chemicals, for instance, and you will understand that all these items come in solutions and mixtures of two or more ingredients. Mixtures and solutions are also quite important in many industrial sectors from agricultural chemical processing to chemical reagent preparations. In many processes calling for chemical mixing, mixing chemicals should be done in the most controlled procedures, often requiring sophisticated instruments and safety gears or protective suits.
There are many chemicals that are extremely hazardous. Mixing two or more substances can result to one of several types of reactions, all of which have one common feature and this is the production of new substances or new mixtures. Many useful chemicals have been manufactured through mixing of different chemicals. Various effects can happen when mixing substances though. These include precipitation of a new substance, evolution of heat, absorption of heat, and evolution of gas (if one of the products is a gaseous substance).
Of course, change in the color of the mixture is an apparent indication of a reaction happening. The matter with combination of two or more substances is that toxic chemicals or gases may be the products of the formerly inert substances. In other cases, some chemicals could react vigorously with the production of enormous heat, which in uncontrolled instances can set nearby objects on fire. One of the most hazardous effects of crude mixing of certain substances is that a rapid evolution of toxic fumes may result. Doing such procedure without proper gears and instruments could expose one to hazardous substance.