Homebrew PCBs

--- In Homebrew_PCBs@yahoogroups.com, "mikezcnc" <eemikez@c...> wrote:
> IPA is carcinogenic, Stefan. I'm glad your post allowed me to raise 
> this issue. 
> 
> Mike


Seperate the MANUFACTURE of it from the USE of it.
I use it, not manufacture it.

each link provided clearly states that use of IPA is not 
carcenogneic, but that the strong acids used in manufacturing it are.

I've quoted the section from each link you provided.



> http://paranoia.lycaeum.org/alcohol/Isopropyl-Alcohol
Cancer Hazard 
 *    There is an increased incidence of nasal sinus cancer in 
      workers involved in the manufacture of Isopropyl Alcohol by 
      the strong acid process. There is no evidence that Isopropyl 
      Alcohol is a carcinogen. 


>http://www.osha.gov/SLTC/healthguidelines
>/isopropylalcohol/recognition.html

Epidemiological studies suggested an association between isopropyl 
alcohol and paranasal sinus cancer; however, subsequent analysis 
suggests that the "strong-acid" process used to manufacture isopropyl 
alcohol may be responsible for these cancers [ACGIH 1991]. 


>http://www.bluepoppy.com/press/download/articles/isopropyl_alcohol.cf
m

What we have found is that, according to the best scientific data 
available at this time, isopropyl alcohol is not a carcinogen when 
used externally. Nasal cancers found in workers in factories where 
this type of alcohol is produced are due not to the isopropyl alcohol 
itself but to the strong acid used in its manufacture. The "Material 
Safety Data Sheet" on Hibiclens® (which contains isopropyl alcohol as 
a main ingredient) published by ICI Americas, Inc. states: 

The manufacture of isopropyl alcohol by the strong acid process is 
associated with paranasal sinus and laryngeal cancer in man. No other 
information or data have linked isopropyl alcohol with cancer.1


Dave