Ira Remsen

1846 - 1927

Ira Remsen (1846–1927): The Architect of American Chemical Research

Ira Remsen was not merely a chemist; he was a foundational figure in the professionalization of American science. As a researcher, educator, and university administrator, Remsen imported the rigorous German model of laboratory investigation to the United States, transforming the American university from a teaching college into a powerhouse of original discovery. He is perhaps most widely known for the accidental discovery of saccharin, but his true legacy lies in the generations of chemists he trained and the institutional standards he established.

1. Biography: From Reluctant Physician to Research Pioneer

Ira Remsen was born on February 10, 1846, in New York City. Yielding to his father’s wishes, he initially pursued medicine, earning his M.D. from the College of Physicians and Surgeons (now part of Columbia University) in 1867 at the young age of 21. However, Remsen found the medical practice of the mid-19th century unscientific and unsatisfying.

Driven by a desire for deeper intellectual rigor, he left for Germany—then the global epicenter of scientific inquiry. He studied under the legendary Friedrich Wöhler at the University of Göttingen and later served as an assistant to Rudolf Fittig at the University of Tübingen, where he earned his Ph.D. in 1870.

Upon returning to the U.S. in 1872, Remsen took a professorship at Williams College. He found the environment stifling; the college lacked research facilities, and the leadership viewed original investigation as a distraction from teaching. This changed in 1876 when Daniel Coit Gilman recruited Remsen to be one of the founding faculty members of Johns Hopkins University. As the first Professor of Chemistry at Hopkins, Remsen was given the freedom to build a department modeled on the German seminar and laboratory system. He served as the university’s second president from 1901 to 1913.

2. Major Contributions: Saccharin and Systematic Organic Chemistry

Remsen’s scientific work focused primarily on organic and inorganic chemistry, specifically the oxidation of substitution products of aromatic hydrocarbons.

The Discovery of Saccharin (1879): The most famous contribution associated with Remsen’s lab was the discovery of the first artificial sweetener. While investigating the oxidation of coal tar derivatives, Remsen’s post-doctoral fellow, Constantin Fahlberg, noticed a sweet taste on his bread during dinner. He traced the sweetness back to the substance they had been synthesizing in the lab: ortho-sulfobenzoic acid imide. While Fahlberg later patented the substance (saccharin) and claimed sole credit—leading to a lifelong rift—the discovery occurred under Remsen’s direction and within his theoretical framework.
The "Remsen Policy" of Research: Remsen introduced the concept of the "research group" to America. He emphasized that the primary goal of the university chemist was not just to transmit known facts, but to expand the boundaries of knowledge through experimentation.
Chemical Education: He authored several textbooks that moved away from rote memorization toward a conceptual understanding of chemical laws and structures. His pedagogy defined how chemistry was taught in the U.S. for decades.

3. Notable Publications

Remsen was a prolific writer, but his most significant contribution to the literature was the founding of the American Chemical Journal in 1879. At the time, American chemists had no dedicated outlet for their research and were forced to publish in European journals. Remsen edited the journal for 35 years until it merged with the Journal of the American Chemical Society (JACS) in 1913.

Key Books:

Theoretical Chemistry (1877): One of the first American texts to treat chemistry as a theoretical science rather than a descriptive one.
An Introduction to the Study of Organic Chemistry (1885): A landmark textbook that went through numerous editions and translations.
The Principles of Theoretical Chemistry (1887).
A Text-book of Inorganic Chemistry (1889).

4. Awards and Recognition

Remsen’s leadership in the scientific community earned him the highest honors available to an American scientist of his era:

President of the National Academy of Sciences (1907–1913).
President of the American Chemical Society (1902).
The Priestley Medal (1923): The highest honor bestowed by the American Chemical Society, awarded for his lifetime of service to the field.
Willard Gibbs Award (1914): Recognized for his pioneering research in organic chemistry.
Honorary Degrees: He received honorary doctorates from Harvard, Yale, Princeton, and Columbia, as well as foreign recognition from the British Society of Chemical Industry.

5. Impact and Legacy

Ira Remsen is often called the "Father of American Chemical Research." Before Remsen, American chemistry was largely an applied science used for mining or agriculture. Remsen shifted the focus to "pure chemistry."

His legacy is best seen in the "Remsen School"—the hundreds of Ph.D. students he mentored who went on to lead chemistry departments across the country. By the early 20th century, a significant percentage of the heads of chemistry departments in the U.S. were Remsen’s former students. He effectively seeded the American academic landscape with the principles of the research university.

6. Collaborations and Mentorship

Remsen’s career was defined by his role as a mentor.

Constantin Fahlberg: Though their relationship ended in legal and personal bitterness over the saccharin patent, their collaboration in 1879 remains one of the most commercially significant partnerships in chemical history.
The "Hopkins Circle": Working alongside figures like Daniel Coit Gilman (President) and Henry Augustus Rowland (Physics), Remsen helped create the first true "community of scholars" in America.
Students: His students included E. Emmet Reid (a pioneer in organic sulfur chemistry) and Charles Herty (who revolutionized the Southern pine industry).

7. Lesser-Known Facts

The Nitric Acid Experiment: Remsen is the author of a famous anecdotal essay titled "The Action of Nitric Acid on a Copper Penny." In it, he describes a childhood experiment where he put a penny in nitric acid and, fascinated by the violent reaction, tried to remove it with his fingers. The essay is still used by chemistry teachers today to illustrate the visceral power of chemical reactions and the importance of lab safety.
Disdain for Medicine: Despite holding an M.D., Remsen famously remarked that he found the medical education of his time "repulsive" and "unscientific," which fueled his lifelong passion for the precision of the laboratory.
Interred in the Lab: In a rare tribute to a scientist’s devotion to his institution, Ira Remsen’s ashes are interred in a wall behind a bronze tablet in Remsen Hall on the Johns Hopkins University campus. He remains the only person buried on the university grounds.
A Lack of Greed: Unlike Fahlberg, Remsen never sought to profit from the discovery of saccharin. He famously stated:
"I do not want to be known as the discoverer of a substitute for sugar; I want to be known as a chemist."

Conclusion

Ira Remsen’s life bridged the gap between the amateur science of the 19th century and the professional research engines of the 20th. While his name is etched in history through a sweetener, his true monument is the American research university itself—an institution he helped build through a stubborn insistence that the pursuit of knowledge is a noble end in its own right.