Inspector of dyeing: an academy chemist put in charge of colour
A state office that joined academic chemistry to the craft dyehouse: the inspector general of dyeing, appointed by the Academy of Sciences. The French crown treated dyeing as a strategic matter and handled colour as a standard: the regulation of 1671, drawn up on Colbert's order, fixed the permissible shades of blue.
On the same plan the Academy took up two fields at once, bleaching and dyeing, and charged Du Fay, then Hellot and Macquer with laying the foundations of a chimie tinctoriale. The office was held in turn: Du Fay, then Hellot from 1740, then Macquer, then Berthollet from 1784.
Hellot's book of 1750 gathered dyeing into an account fit to be transmitted. Its theory of dyeing and of the action of mordants was accepted without reservation by Macquer (though he later revised it). The dyehouse became the place where an academy chemist answered for the quality of the craft's output.
Why this date
The axis value is 1750, the publication of Hellot's L'art de la teinture des laines et étoffes de laine au grand et au petit teint, the first reference publication of textile technology in the modern meaning of the term (Wisniak 2009). Hellot took the post of inspector general of dyeing in 1740, succeeding Du Fay (Wisniak 2009; DSB, entry by Marie Boas Hall). The office of inspector of manufactures was created by Colbert in 1669 (Wisniak 2009), and the general regulation for the dyeing of wool was issued by his order in 1671 (Delamare 2019). The post was later held by Macquer and, from 1784, by Berthollet (DSB, entry by Kapoor). The year of Du Fay's appointment could not be verified in the sources available.
What grew out of it
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Chlorine bleaching: a gas instead of a meadow and the sun
influenced · Confidence: medium
Bleaching and dyeing were the two fields in which the Academy of Sciences, on Colbert's plan, conducted research, and Berthollet took up chlorine after succeeding to the post of inspector of dye works on Macquer's death in 1784; he himself explained his interest partly by that service.
Dispute: Kapoor weakens the link in the same sentence: the Gobelins affiliation, he says, only partly prompted Berthollet, while Berthollet himself insisted that his chief motive was the humanitarian ideals of the Encyclopedists. The source that asserts the link at once says it was not the decisive one.
Link sources
- Delamare F. «Teindre au bleu de Prusse, une aventure française», Technologie et Innovation 4 (4), 1-15 (2019), 3 Verified 5 Oct 2026
Blanchissage et Teinture, c'est dans ces deux domaines que l'Académie royale des Sciences, inspirée par Colbert, va lancer des recherches afin de détecter les procédés les plus efficaces employés, de les étudier, les améliorer et les recommander.
- Kapoor S. C. «Berthollet, Claude Louis», Dictionary of Scientific Biography Verified 5 Oct 2026
In 1784, on Macquer's death, he was appointed inspector of dye works and director of Manufacture Nationale des Gobelins.
- Kapoor S. C. «Berthollet, Claude Louis», Dictionary of Scientific Biography Verified 20 Sep 2026
partly prompted by his affiliations with Gobelins, but chiefly (as he often insisted) by the humanitarian ideals inculcated in him by the Encyclopedists
"Verified" means that on that day the quotation was found at the address given, word for word. No date means we have not been able to open the source yet, not that the quotation is wrong.
- Delamare F. «Teindre au bleu de Prusse, une aventure française», Technologie et Innovation 4 (4), 1-15 (2019), 3 Verified 5 Oct 2026
Node sources
- Delamare F. «Teindre au bleu de Prusse, une aventure française», Technologie et Innovation 4 (4), 1-15 (2019), 2 Verified 5 Oct 2026
Depuis l'Instruction générale pour la teinture des laines rédigée par ordre de Colbert (1671), les nuances de bleu autorisées sont normalisées.
- Delamare F. «Teindre au bleu de Prusse, une aventure française», Technologie et Innovation 4 (4), 1-15 (2019), 3 Verified 5 Oct 2026
Blanchissage et Teinture, c'est dans ces deux domaines que l'Académie royale des Sciences, inspirée par Colbert, va lancer des recherches afin de détecter les procédés les plus efficaces employés, de les étudier, les améliorer et les recommander.
- Delamare F. «Teindre au bleu de Prusse, une aventure française», Technologie et Innovation 4 (4), 1-15 (2019), 3 Verified 5 Oct 2026
Comme son collègue Jean Hellot et, avant eux, Charles François du Fay, il a été chargé par l'illustre Compagnie de jeter les bases d'une Chimie tinctoriale.
- Delamare F. «Teindre au bleu de Prusse, une aventure française», Technologie et Innovation 4 (4), 1-15 (2019), 2 Verified 5 Oct 2026
Une profession dynamique, fortement encadrée par des règlements contraignants qui tendent à promouvoir la qualité et unifier les productions, mais qui se méfie comme de la peste des innovations.
- Wisniak J. «Jean Hellot. A pioneer of chemical technology», Revista CENIC Ciencias Químicas 40 (2), 111-121 (2009)
In 1740 Hellot succeeded Du Fay as Inspecteur Général des Teintures, the title Orry had given him.
- Wisniak J. «Jean Hellot. A pioneer of chemical technology», Revista CENIC Ciencias Químicas 40 (2), 111-121 (2009)
In 1669 Jean-Baptiste Colbert (1619-1683), Ministry of Finance of Louis XIV, created the position of Inspector of Manufactures
- Wisniak J. «Jean Hellot. A pioneer of chemical technology», Revista CENIC Ciencias Químicas 40 (2), 111-121 (2009), 118
In this book, Macquer accepted Hellot's theories on dyeing and the mordant action without reservations, but later, after accumulating sufficient information on mordants, he concluded that the function of the mordant was to act as a chemical bridge between the dye and the fiber
- Boas Hall M. «Hellot, Jean», Dictionary of Scientific Biography Verified 5 Oct 2026
in the same year was appointed inspector general of dyeing, a field in which he became an authority.
- Boas Hall M. «Hellot, Jean», Dictionary of Scientific Biography Verified 5 Oct 2026
Hellot was an original and effective practical and industrial chemist, one among the first generation of French scientists to concern themselves with technology.
- Kapoor S. C. «Berthollet, Claude Louis», Dictionary of Scientific Biography Verified 5 Oct 2026
In 1784, on Macquer's death, he was appointed inspector of dye works and director of Manufacture Nationale des Gobelins.
"Verified" means that on that day the quotation was found at the address given, word for word. No date means we have not been able to open the source yet, not that the quotation is wrong.