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Journal of the Society of Motion Picture Engineers ( Volume: 47, Issue: 5, November 1946)
[ACTIVE]

An Improved Method for the Determination of Hydroquinone and Metol in Photographic Developers

Metadata

Publisher
SMPTE
Doc Type
Journal Article
Article Type
research-article
Abstract
A new method for the quantitative chemical analysis of hydroquinone and metol is suggested that is more rapid and, in some cases, more accurate than previous methods. Molecular hydroquinone and methyl p-amino phenol are extracted from the developer at pH 8.0 to 8.5 with methyl acetate. The extract is dissolved directly in water and titrated with hydrochloric acid to determine metol, and then with iodine at pH 6.5 to 7.0 to determine the sum of the metol and the hydroquinone.
Publication Date
1946-11-01
DOI
10.5594/J12766
Link
https://doi.org/10.5594/J12766
Author(s)
H. L. Baumbach
Source Data (JSON)

Full registry record with provenance metadata. Open directly: /api/doc/10.5594-J12766.json

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H. L. Baumbach; An Improved Method for the Determination of Hydroquinone and Metol in Photographic Developers, Journal of the Society of Motion Picture Engineers ( Volume: 47, Issue: 5, November 1946); SMPTE, 1946. Available at https://doi.org/10.5594/J12766
Snippet:
H. L. Baumbach; An Improved Method for the Determination of Hydroquinone and Metol in Photographic Developers, Journal of the Society of Motion Picture Engineers ( Volume: 47, Issue: 5, November 1946); SMPTE, 1946. Available at https://doi.org/10.5594/J12766

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H. L. Baumbach; An Improved Method for the Determination of Hydroquinone and Metol in Photographic Developers, Journal of the Society of Motion Picture Engineers ( Volume: 47, Issue: 5, November 1946); SMPTE, 1946. Available at https://doi.org/10.5594/J12766
Snippet:
<span class="citation">H. L. Baumbach; <cite>An Improved Method for the Determination of Hydroquinone and Metol in Photographic Developers</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 47, Issue: 5, November 1946); SMPTE, 1946. Available at <a href="https://doi.org/10.5594/J12766" target="_blank" rel="noopener">https://doi.org/10.5594/J12766</a></span>

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Preview:
H. L. Baumbach; An Improved Method for the Determination of Hydroquinone and Metol in Photographic Developers, Journal of the Society of Motion Picture Engineers ( Volume: 47, Issue: 5, November 1946); SMPTE, 1946
doi: 10.5594/J12766
url: https://doi.org/10.5594/J12766
Snippet:
<li>
H. L. Baumbach; <cite id="bib-10-5594-j12766">An Improved Method for the Determination of Hydroquinone and Metol in Photographic Developers</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 47, Issue: 5, November 1946); SMPTE, 1946
<span class="doi">10.5594/J12766</span>
</li>