Subject: Storing silver picrate
We have several small bottles of a pharmaceutical product from ca. 1937 which may not be safe to keep in our collection. The product is labelled as Compound Picatrol and (in small print) Silver Picrate, 1% in a kaolin base. One bottle is attached to a rubber puffer and the white powder is leaking from it. We can't expect the rubber to last indefinitely either. Our research indicates that silver picrate is explosive, but whether it is a hazard in a 1% concentration is unknown. We're not chemists! There's an article about how this product was used and a photo of a bottle attached to a puffer from the British Medical Journal, May 29 1937 online at <URL:http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2088950/pdf/brmedj04252-0014.pdf> If anyone could advise we'd be very grateful. Robyn Waymouth Archivist Archives Department The Royal Women's Hospital Locked Bag 300 Cnr Grattan St and Flemington Road Parkville VIC 3052 Days working Monday-Thursday +61 3 8345 3905 *** Conservation DistList Instance 30:7 Distributed: Saturday, July 2, 2016 Message Id: cdl-30-7-019 ***Received on Wednesday, 29 June, 2016