TABLE 6.

MIC of some antiseptics and disinfectants against gram-positive and gram-negative bacteria^a

Chemical agent	MIC (μg/ml) for:
	S. aureusb	E. coli	P. aeruginosa
Benzalkonium chloride	0.5	50	250
Benzethonium chloride	0.5	32	250
Cetrimide	4	16	64–128
Chlorhexidine	0.5–1	1	5–60
Hexachlorophene	0.5	12.5	250
Phenol	2,000	2,000	2,000
o-Phenylphenol	100	500	1,000
Propamine isethionate	2	64	256
Dibromopropamidine isethionate	1	4	32
Triclosan	0.1	5	>300

^aBased on references 226 and 440. 

^bMICs of cationic agents for some MRSA strains may be higher (see Table 10).