Lithium Corporation of America (Lithco), a subsidiary of FMC Corporation, has developed a non-toxic proprietary chemical and subsequent process for the deacidification, buffering and strenghtening of paper that is said to extent the useful life of books and paper documents. The proprietary product, called MG-3, is a non-pyrophoric magnesium compound soluble in both hydrocarbon and halocarbon solvents. No adverse health effects have been seen in the first series of dermal, eye, inhalation and other toxicology tests for the compound and treated paper.