Robert...the Green SOlvents and LabSolvents apps have been sponsored by RSC: http://www.chemconnector.com/2013/02/27/green-solvents-and-lab-solvents-mobile-apps-now-sponsored-by-rsc/
Also, it would be great if we could get some help expanding the content at www.scimobileapps.com which is a wiki we host where we ask people to add apps.