How is the fire hazard of aqueous solutions formed by dissolving Class A and Class B gases in water determined?
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As indicated in the title, gases of Category A and B pose a risk of explosion; in industrial production, aqueous solutions are used to reduce this risk. So how is the fire hazard of aqueous solutions of these substances determined? How are their flash points obtained?
Judgment of the fire hazard of aqueous solutions formed by dissolving Class A and Class B gases in water: Since these gases form aqueous solutions of varying concentrations when dissolved in water, the method for determining the fire hazard level of such solutions is as follows: 1) Consult relevant data manuals, such as those contained in chemical process manuals, to determine the hazard level of aqueous solutions with different concentrations； 2) If the relevant data cannot be obtained, the local fire department will have to issue an opinion on the fire hazard level of that aqueous solution, but this is highly unlikely; they will not readily take on such responsibility ； If neither of the above two methods works, there is one last option: to engage a relevant testing agency – usually a provincial-level testing and inspection institution – to conduct tests on the hazards of the aqueous solution you are using, in order to determine its fire hazard under different conditions. However, this approach will incur certain costs, and its feasibility is debatable. I hope what has been mentioned above can be helpful to you; you can discuss the details with your boss or supervisor.