Pure sodium nitrite is classified as Category B, but how is the fire hazard category defined for its aqueous solution?
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Pure sodium nitrite is classified as Category B, but how is the fire hazard category defined for its 30% aqueous solution?
I’m not familiar with fire safety regulations; I found some information and guess that it should be classified as a Category B substance under the category of \"oxygenators that do not belong to Category A.\" A 30% solution seems to fit none of these categories – it might not be classified as such for storage purposes, but could be considered Category B if used in production. https://wenku.baidu.com/view/89c8179533687e21ae45a95f.html
By your reasoning, a 1% sodium nitrite aqueous solution should also be classified as Category B?
There are differences depending on the concentration; lower concentrations result in reduced risk
In my opinion, aqueous solutions can be classified as Category V!
In response to the original poster’s question, a sodium nitrite warehouse probably doesn’t need explosion-proof measures, right? I remember reading before that it could fall under Category B2, in which case explosion-proof electrical equipment isn’t required. So, can the distance between the sodium hydride storage area and adjacent power distribution rooms (such as those in pump rooms) be less than 10 meters? The building code requires a height of no less than 10 meters, but are there any relaxed regulations for such non-flammable and non-explosive materials? Please give some advice from an expert, thanks!