Fire hazard classification of molten sulfur?
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As we all know, solid sulfur is classified as Category B (or Category C) in terms of its fire hazard. So, what category does sulfur in its molten (liquid) state fall under in terms of fire hazard?
The fire category for liquid sulfur should be Class C; more precisely, it belongs to Class CB, as it is a flammable liquid. This is different from the hazards associated with sulfur powder; the fire hazard classification of sulfur powder is determined by the size of its dust particles – particles smaller than 2 mm fall into Category B, while those 2 mm or larger belong to Category C. The above classification is based on GB50160-2008. The Code for Fire Protection Design of Buildings GB50016-2006 classifies sulfur as Category B; it is inappropriate not to make distinctions based on its particle size.
Liquid sulfur falls under Category C of fire-hazardous materials-----------liquids with a flash point of 60°C or higher
The two students upstairs classified the fire hazard of liquid sulfur as Category C; I’m not sure what the basis for that is (since there are no specific data on its flash point).
Reply: jingsan, what is the flash point of liquid sulfur? As for its flash point, no specific data could be found. Explanations to the provisions of the Code for Fire Protection Design of Petrochemical Enterprises GB50160-2008: 3 Fire hazard classification – Table 2 classifies liquid sulfur as Category C B; therefore, its flash point should be greater than 120 degrees.
From a design perspective, it’s safer to have more stringent divisions. But I think sulfur has always been classified as Category C