Is there a resource for determining what group a combustible material belongs to if it is not listed in NFPA 497, Table 4.4.2. In this instance:
Msds for the chemical
fire protection engineer, who would look at a msds
are you trying to get the flammable or combustible class??
1,2,4-TRIMETHYLBENZENE | CAMEO Chemicals | NOAA
1,3,5-TRIMETHYLBENZENE | CAMEO Chemicals | NOAA
Just need the msds from the chemical supplier
Thanks for the attention and responses. This information is not available in the recommended links.
NFPA 497, Table 4.4.2 lists a category "Class I Division Group". This is the classification of combustible material and is a choice of A, B, C, or D. (There is also a Zone group.) This Group designation is listed on the Area Classification Drawings and their supporting documents. It is not a item provided on the [M]SDS. I believe that these are derived experimentally and are determined based on the Maximum Experimental Safe Gap (MESG) or on the Minimum Ignition Current (MIC). The thresholds are based on a ratio to that of Methane. I am looking for resource that would provide that information.
Do the defintions help you??
May take an FPE looking through msds and some other documents to classify them.
Looks like one is kind of on this list
That one is triethylbenzene. The list is condensed from NFPA 497, Table 4.4.2.
OK, that is the best I can do, sounds like you need an FPE
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