Igepal

[David Walker <talisman@xxxxxxxxxx>]

Deborah -

Igepal CA-630 (which is chemically similar to, but slightly less 
hydrophilic than, Triton X-100) is reported to have a CMC of .05 g/l 
(.005% v/v).  When applied in a single surfactant system, we used it 
in a concentration about 30 times the CMC (or about 1 liquid ounce 
per 5 gallons) on average - but varied this as needed (for instance, 
if less wetting time was indicated, we used less - for heavy oily 
soil we used more).

We stopped using this product about 18 years ago and switched to 
alcohol ethoxylates for nonionic surfactants, which are more 
biodegradable and have less health impacts.  We started with several 
of the Neodols, then several Tergitols.  We are currently using 
Trition XL-80N (at the same concentration as above).

--
David Walker


Talisman Restoration, Inc.            phone:  (831) 425-7847
719 Swift St. #5                        fax:  (831) 425-7829
Santa Cruz, CA 95060 USA              email:  david@xxxxxxxxxxxxxxxxxxxxxxx