Not being a native english speaker, I always wonder on what people mean when they say they are using "naphta" or "lighter fluid" for cleaning lenses and also camera inerts. I first thought it is naphtalene, but given its properties I highly doubt it. Wikipedia gives a number of chemicals which could relate to naphta including ethanol, methanol, benzene, ether (that's not exactly easily available for household use). Could somebody enlighten me, which -as a pure substance, not a mixture- is usually refered to when talking about "naphta"? (chemical names, please, not brand names). Thanks.