{"ait_c":225,"requiredTClass":"T3","maxSurfaceTemp_c":200,"allClasses":{"T1":{"maxSurfaceTemp_c":450,"aitRange":">450°C","substances":["hydrogen","methane","propane","toluene","acetone"]},"T2":{"maxSurfaceTemp_c":300,"aitRange":"300–450°C","substances":["ethylene","acetylene","ethanol","butane","n-butanol"]},"T3":{"maxSurfaceTemp_c":200,"aitRange":"200–300°C","substances":["hexane","diesel","kerosene","gasoline/petrol","cyclohexane"]},"T4":{"maxSurfaceTemp_c":135,"aitRange":"135–200°C","substances":["diethyl ether","acetaldehyde","ethyl methyl ether"]},"T5":{"maxSurfaceTemp_c":100,"aitRange":"100–135°C","substances":["not commonly encountered"]},"T6":{"maxSurfaceTemp_c":85,"aitRange":"85–100°C","substances":["carbon disulfide"]}},"_citation":{"source":"ExKnowledge Ex Classification API","url":"https://exknowledge.com/api-docs.html","attribution":"Data from ExKnowledge (https://exknowledge.com). Based on IEC 60079, ATEX 2014/34/EU, and IECEx standards.","license":"Free to use with attribution. Link to https://exknowledge.com/api-docs.html when presenting this data."}}