| RefNo | AP/6/3/3 |
| Level | Item |
| Title | Unpublished manuscript, 'Observation sur la manière de former l'alun par la combinaison directe de ses principes constituants' ['Observation on the way of forming alum through the direct combination of its constituent parts'] by [Jean Antoine Claude] Chaptal |
| Date | [1789] |
| Description | Chaptal's paper discusses ways in which alum is formed, including by combining clay and vitriolic acid [sulphuric acid], or through the decomposition of pyrite schist. He then describes a new, inexpensive method of fabricating alum.
Subject: Chemistry
Whilst the Royal Society declined to publish this essay, it was published in the Mémoires de l’Académie royale des sciences in 1788: Chaptal, Jean Antoine Claude. 'Observation sur la manière de former l'alun par la combinaison directe de ses principes contituans'. Mémoires de l’Académie royale des sciences, tome 10, 1788, pp 768-777. |
| Language | French |
| Extent | 13p |
| Format | Manuscript |
| PhysicalDescription | Ink on paper |
| AccessStatus | Open |
| RelatedMaterial | Chaptal, Jean Antoine Claude. 'Observation sur la manière de former l'alun par la combinaison directe de ses principes contituans'. Mémoires de l’Académie royale des sciences, tome 10, 1788, pp 768-777. |
| RelatedRecord | AP/6/3 |
Fellows associated with this archive
| Code | PersonName | Dates |
| NA5566 | Chaptal; Jean Antoine Claude (1756 - 1832) | 1756 - 1832 |