how do make phenyl,a household disinfectant?

Answer 1

You are actually wanting to know how to make phenol; a rather potent disinfectant that you still would not be using in a household, maybe a biological or chemical lab but not a household. Households do not have the propre ventilation nor need for phenol. Bisphenol however, a similar molecule with very similar properties however is safe for household usage, it was the active ingrediant in Lysol and very well may still be (I can not confirm the still part as I do not have a fresh bottle in front of me).

Phenol in a non-chemist pov is the alcohol made from benzene and is actually chemically an entire class of organic compounds. It looks like a benzene ring with one of the Hydrogens replaced with an OH group. Bisphenol is similar except the fact that it is 2 phenols joined at the point opposite their OH group by a single C-C bond (sp2 hybridized orbitals) and free rotation about that bond.
Oxidation in the presence of an Arrhenius Base or water will allow the formation of benzene to phenol.

Answer 2

Sounds like you want to produce "Phenyl" (a generic phenolic disinfectant) - 3% mixed cresols ("cresylic acid") neutralised with sodium hydroxide 'till about pH 8. Add 2% nonylphenolethoxylate (NPE-9) for wetting and detergency.

Answer 3

phenyl isn't a chemical. It's the nomenclature name for benzene as a substituent to something else.

Otherwise, you're cleaning with benzene. Not a smart move, since it causes cancer (It is very planar because of the ring and so it slips in between your nucleotide base sites)