Charles A. Seibert

Sixth Olney Medalist 1949
DuPont Chemical Co., Deepwater, NJ


Mr. Seibert was born October 18, 1884 in New York City. He started in the dyestuffs industry upon completion of grammar school in 1899, when he went to work in the laboratories of Oakes Manufacturing Co. in Long Island City, New York. He worked there for eight years and studied scientific methods of preparing and using natural dyes. Within a few years, he changed to synthetic dyes. Between 1910 and 1914, he collaborated in the first use of cold­dyeing Algol dyes to dye uniforms in khaki and olive drab shades. He also applied vat dyes for the first time on a practical scale to both raw and “boiled­off” silk, and collaborated in developing the “one bath” method for resisting woolen thread with tannic acid.

After operating his own dye house in Conshohocken, Pennsylvania for a short time, he joined DuPont in May 1926. For many years he headed a group at the technical laboratory responsible for numerous technical sales assignments, evaluation of new products, and research on dyestuffs application.

He held various offices in the Philadelphia section of AATCC and has been chairman of five different research committees on test methods for color fastness. He took an active interest in civic affairs of Salem, New Jersey and has worked with the Boy Scouts, Red Cross and Civilian Defense during World War II. He and his wife and two children lived at 41 Chestnut Street, Salem.

He retired in 1949 as Division Head of Textile Research for DuPont’s Technical Laboratories at Deepwater Point, New Jersey after serving the company for 23 of his fifty years in the dyestuffs industry.



  1. Charles A. Seibert, ”Vat Dyes for Wool,” American Dyestuff Reporter, Vol. 15, 1926, p56.
  2. Charles A. Seibert, “Some Observations Pertaining to the Uniform Absorption by Rayon of Synthetic Dyes, American Dyestuff Reporter, Vol. 19, 1930, p29.
  3. Charles A. Seibert, “Rate of Absorption and Affinity at Different Temperatures of Substantive Dyes when Applied to Cotton and Rayon, American Dyestuff Reporter, Vol. 22, 1933, p383; Vol. 23, 1934, p12.
  4. Charles A. Seibert, “Atmospheric (Gas) Fading of Colored Cellulose Acetate­Part I.”, American Dyestuff Reporter, Vol. 29, 1940, p363.
  5. Charles A. Seibert, “The Source of Metals in Dyed Cottons to be Rubberized,” American Dyestuff Reporter, Vol. 29, 1940, p136.
  6. Charles A. Seibert, “Testing Vat Dyed Cottons for Fastness to Hypochlorite Bleach,” American Dyestuff Reporter, Vol. 30, 1941, p682.
  7. Charles A. Seibert, “Variables Encountered in Fadeometer Testing,” American Dyestuff Reporter, Vol. 30, 1941, p64.
  8. Charles A. Seibert, “Atmospheric Fading of Colored Cellulose Acetate –Part II,” American Dyestuff Reporter, Vol. 31, 1942, p647.
  9. Charles A. Seibert, “Report of Committee on Fastness to Dry Cleaning,” American Dyestuff Reporter, Vol. 32, 1943, p362.
  10. Charles A. Seibert, “Effect of Fiber pH on the Lightfastness of Dyed Cotton,” American Dyestuff Reporter, Vol. 33, 1944, p311.
  11. Charles A. Seibert, “A Proposed Method for the Calibration of Carbon Arc Lamps used for Testing and Grading Lightfastness,” American Dyestuff Reporter, Vol. 34, 1945, p272.
  12. “Charles A. Seibert, Sixth Olney Medalist 1949,” American Dyestuff Reporter, November 28, 1949, p869; December 12, 1949, p918.