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Swedish chemist (1745?1818)
Johan Gottlieb Gahn
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Johan Gottlieb Gahn
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Born
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1745-08-19
)
19 August 1745
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Died
| 8 December 1818
(1818-12-08)
(aged 73)
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Nationality
| Swedish
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Known for
| Discovery of
manganese
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Scientific career
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Fields
| Chemistry
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Johan Gottlieb Gahn
(19 August 1745 ? 8 December 1818) was a
Swedish
chemist
and
metallurgist
who isolated
manganese
in 1774.
[1]
Gahn studied in
Uppsala
1762 ? 1770 and became acquainted with chemists
Torbern Bergman
and
Carl Wilhelm Scheele
.
[2]
1770 he settled in
Falun
, where he introduced improvements in copper
smelting
, and participated in building up several factories, including those for
vitriol
,
sulfur
and
red paint
.
He was the chemist for The Swedish Board of Mines
Bergskollegium
from 1773 ? 1817. Gahn was however very reluctant to publish his scientific findings himself, but freely communicated them to Bergman and Scheele. One of Gahn's discoveries was that
manganese dioxide
could be reduced to manganese metal using
carbon
, becoming the first to isolate this element in its metal form.
In 1784, Gahn was elected a member of the
Royal Swedish Academy of Sciences
. He also made a managerial career in Swedish mining.
See also
[
edit
]
- Gahnite
, named after Johan Gottlieb Gahn.
References
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]
Further reading
[
edit
]
- "Biographical Account of Assessor John Gottlieh Gahn".
Annals of Philosophy
. New Series.
8
(July): 1?11. 1824.
External links
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]
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