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further on Abzol

Eddy Zwaneveld has done some research on Abzol:

--- Forwarded mail from Eddy Zwaneveld <E.HA.ZWANEVELD at NFB-ONF.CA>

Dear Rob,

Albemarle have a Home Page at<www.clearidea.com/albe/index.html>, 

It is a firm with headquarters in Brussels, Belgium. 
Their Home Page also shows where they are located around the world.
See <www.clearidea.com/albe/index.html>. 

Their Abzol product description I found elsewhere, 
at <www.nepcon.co.uk/exo666g.htm>, it reads: 

"Abzol Cleaners are new solvents that promise customers first-rate 
cleaning performance - the ability to clean, rinse and dry in one step. 
The physical properties and solvency characteristics make them 
comparable to chlorinated solvents. 

They can be used in most existing equipment without modifications. 
They contain no CFCs or chlorinated solvents."

I might also mention, that many motion picture laboratories world-wide 
are using perchloroethylene, also referred to as perchlorethylene, or 
tetrachloroethylene. It takes twice as long to dry as compared with 
1,1,1, trichloroethane which was commonly used in Ultrasonic Film 
Cleaning machines, and needs very good air evacuation at the source, 
and has potential health hazards if exposed beyond NIOSH/OSHA 
Threshold Limit Values, which will be indicated on the Chemical Safety 
Data Sheets that must be supplied with the chemicals.

There are several other non-solvent options, among which the 
Technical Film Systems, Inc.of Chatsworth, Ca.distilled water 
film cleaners, which are increasingly used in the large Hollywood Labs.

Like the Particle Transfer Roller (PTR) film cleaning rollers, they 
do not clean greases etc off the film, but certainly greatly reduce 
the need for solvent cleaning, which may be expected to cost more
than 1,1,1 Tricholoethane.

With best regards,

Ed H. Zwaneveld
Technical Research and Development
National Film Board of Canada
125 rue Houde, T-3
Saint Laurent, PQ H4N 2J3
tel: 514-283-9143
fax: 514-283-0278
email: e.ha.zwaneveld at nfb-onf.ca 

------------------new message


Have just spoken with the US representative of Albemarle, 
the manufacturer (in Cannes, France) of Abzol.

He recounted that tests done at one Burbank, Ca. 
Laboratory so far, have demonstrated that Abzol has  
a little too much solvency and makes triacetate film curl, 
from the specs I noted that it is also not kind to 
polyester (Estar) based films.

Evaporation rates from normalized weight loss 
of 2 ml of solvent after 5 minutes, shows that, 
if perchlorethylene is 1.0, then Abzol is 0.96, 
and 1,1,1 trichloroethane is 0.57.

This means that it evaporates about as twice as slowly
as Trichloroethane, which means that an 
ultrasonic cleaning machine, like for perc, 
will have to run at half speed to dry the film properly.

Its degreasing power of mineral oil is 0.048 for Abzol, 
vs 0.055 for tria; for grease, 0.056 for Abzol, 
vs 0.058 for tri. That is about the same.

Environmentally, its Atmospheric Lifetime is 16 days, 
vs 5.4 years for tri.

Permissible exposure limit for inhalation has 
not yet been determined, we know that it is 350 ppm
for 1,1,1, trichloroethane.

Its chemical name is proprietary and it is 95%, 
so it might be best to wait what TLV values will be.

Ed Kurz, of Eastman Kodak has received uninhibited 
samples of Abzol to test it.

With best regards,

Ed Zwaneveld
Technical R&D
National Film Board of Canada
email: e.ha.zwaneveld at nfb-onf.ca
tel: (514) 283-9143 

--- End of forwarded message from Eddy Zwaneveld <E.HA.ZWANEVELD at NFB-ONF.CA>

Rob Lingelbach          |  2660 Hollyridge Dr., Los Angeles, CA 90068
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