I'll preface this question by making clear that I'm not not well versed in biology.
Anyway, within the context of biocides/antimicrobial products using them as active substances, what is the difference among these three quaternary ammonium compounds:
benzyl-C12-16-alkyldimethyl, chlorides (CAS number - 68424-85-1)
benzyl-C8-18-alkyldimethyl, chlorides (CAS number - 63449-41-2)
dimethyloctadecyl[3-(trimethoxysilyl)propyl]ammonium chloride (CAS number - 27668-52-6)
How does one's antimicrobial properties differ from the other? And which is more hazardous? And which is least hazardous?