What chemical compound is considered a Class IB flammable liquid and has a maximum peak exposure limit?
select ?ent where { ?ent wdt:P31 wd:Q21009055 . ?ent wdt:P2406 ?obj . ?ent wdt:P31 wd:Q11173} ORDER BY ASC(?obj)LIMIT 5 
class ib flammable liquid: Q21009055 chemical compound: Q11173