Per Keyser Frolich, 77, former chief scientist of the U. S. Army's chemical corps, died June 10 at his home in Westfield, N. J.

He served in a civilian capacity as deputy chief chemical officer for scientific activities of the Army chemical corps here from 1954 until retiring in 1960.

A resident of Annandale, Dr. Frolich remained here as a consultant for another three years before moving to Westfield.

Born in Norway, he was educated at Norway Institute of Technology. He was awarded a fellowship at Massachusetts Institute of Technology and received a master's degree there in 1923 and a doctorate two years later.

After teaching a MIT, he joined Standard Oil Development Co. of New Jersey and later worked for Merek and Co. in Jew Jersey before joining the Army chemical corps here.

During World War II, Dr. Fronch was on the executive committee of the chemical division of the National Research Council and was a professional consultant to the Office of uubber Reserve and Office of Rubber Director.

He was a former president of the American Chemical Society and a member of the American Institute of Chemical Engineers, the Society of the Chemical Industry and the American Institute of Chemists.

He is survived by his wife, Astrid Fronsdal Frolich, of the home; two daughters, Elizabeth Brachman, of Massachusetts, and Astrid Hancock of Oregan; one brother and five grandchildren.