On Friday, October 12, 2012 10:46:03 PM UTC-6, Roy wrote:
On Friday, October 12, 2012 10:40:36 PM UTC-6, wrote:

question, I own a home and just started renting a room out to a friend.. I have been helping him sell some gadgets online (he makes them himself).. he purchased hard plastic tubing to make the items (it's pretty small tubing). he buys the tubing in bulk. he uses pure acetone to remove some manufacturing numbers that are stamped on one side of the tubing. he uses a cotton swab and dips it in a pint bottle of pure acetone and then uses the swab to blot out the stamped number. I think that's great. however, he's doing it on my living room floor which concerns me. and what concerns me even more, it he spreads out some newspapers to work on and lets the area of the plastic tube dry (the area where he blotted out the stamped number). is this safe? sorta safe? or not safe at all? and when I say safe, I mean safe on the living room floor of someone's home. I really thought laying newspapers under it is a stupid idea. I know nothing about pure acetone other that I read it is flammable. my roomate just told me it was fingernail polish remover (which women use all the time in the house) so it should be no big deal to use in the house. all responses are much appreciated. I asked him to take it outside, but he told me he would be extra careful. it's starting to get cold where I live (that may be one of the reasons he doesn't want to take it outside).







thanks



From Yahoo answers:



"Acetone is only mildly toxic, but is highly volatile and very flammable. Acetone vapors are heavier than air and will travel along the counter top or floor. If they encounter a source of ignition - flame or spark, for example - the flame will flash back to the source, possibly causing a larger fire or explosion. Acetone should be used indoors only with adequate ventilation."

what do you mean adequate ventilation? does that mean the doors and windows should be open when he's working? it's a fairly large room he's working in (probably 10 feet by 25 feet...it's a kitchen/dining room/family room.....but it's all kinda one big room). it's starting to get pretty cold where I live so that may not be an option. I'd like to tell him to take it outside or search for some other chemical that will do that job that isn't flamable. I just don't want to come off as unreasonable as a landlord (and roomate).