Desogen and Dimanin

Could someone direct me to a supplier of Desogen (Ciba-Geigy) or
Dimanin (Bayer), possibly in Canada or N.A.

As you well know both are quaternary ammonium salts used in the AB
57 solution to clean and disinfect mural paintings.

Ciba-Geigy (now Novartis) seems to be unaware of the product they
used to produce and  Bayer doesn't answer my e-mails.

Are you aware of a possible equivalent substitute?

Pierlucio Pellissier in Montreal


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                  Conservation DistList Instance 15:78
                   Distributed: Monday, May 20, 2002
                       Message Id: cdl-15-78-009
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