Dr. Henry A. Hill, 63, former president of the American Chemical Society and member of a number of government scientific groups, died Saturday in his office at the Riverside Research Laboratory in Haverhill, Mass.

He had been president of the laboratory, which does research and consulting work in organic chemistry, since its founding in 1961.

Dr. Hill, an authority in the fields of polymer chemistry and fabric flammability, had served on the National Commission on Product Safety since 1968. He also was a member of the National Bureau of Standards' Evaluation Institute for Applied Technology and the Senate Commerce Committee's subcommittee on consumer affairs.

He joined the board of directors of the American Chemical Society in 1971 and was president in 1977. He was chairman of the chemistry section of American Association for the Advancement of Science in 1976.

Dr. Hill was a native of St. Joseph, Mo., and a graduate of John C. Smith University in Charlotte, N.C. He earned a doctoral degree at the Massachusetts Institute of Technology in 1942.

He was a trustee of Johnson C. Smith University and a member of the Corporation of MIT.

He worked for five years as a vice president of National Polychemicals of Wilmington, Mass., before founding Riverside Research Laboratory in 1961.

Dr. Hill was a resident of Watertown, Mass.

He is survived by a son, Anthony C., of Brookline, Mass.