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Grad ThΓΆrner
ββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
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Das Grad ThΓΆrner (Einheitenzeichen Β°Th, nach dem deutschen Chemiker Wilhelm ThΓΆrner) ist eine gebrΓ€uchliche dimensionslose MaΓeinheit in Schweden und den Nachfolgestaaten der Sowjetunion zur Bestimmung des SΓ€uregrades von Milch, Γ€hnlich der Soxhlet-Henkel-Zahl (Β°SH).
Das Grad ThΓΆrner ist definiert als das Volumen an 0,1-molarer Natronlauge, das benΓΆtigt wird, um bei einer 100-ml-Probe, verdΓΌnnt mit zwei Teilen destillierten Wassers, einen Farbumschlag des pH-Indikators Phenolphthalein zu rosa (= basisch) zu erreichen:
Β°Th = V NaOH 1/10-molar 100 ml Milch = 10 4 β
β
Β°SH = 10 9 β
β
Β°D {\displaystyle {\text{Β°Th}}={\frac {V_{\text{NaOH 1/10-molar}}}{\text{100 ml Milch}}}={\frac {10}{4}}\cdot {\text{Β°SH}}={\frac {10}{9}}\cdot {\text{Β°D}}}
Contents
β’ Siehe auch
β’ Weblinks
β’ Einzelnachweise
ββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
Siehe auch
Weblinks
β’ Russ Rowlett and the University of North Carolina at Chapel Hill (Memento vom 21. Mai 2015 im Internet Archive)
Einzelnachweise
cite-note-11. β @1@2Vorlage:Toter Link/milk.polybum.comTitratable acidity (Seite nicht mehr abrufbar, festgestellt im September 2019. Suche in Webarchiven).
cite-note-22. β Joachim Brock: Stoffwechsel (EiweiΓstoffwechsel, Kohlehydratstoffwechsel, Fettstoffwechsel, Mineralstoffwechsel), Biochemie der KΓΆrpersΓ€fte, ErnΓ€hrung, Haut, Immunbiologie, Statistik. Springer Verlag, Berlin, Heidelberg 1939, ISBN 978-3-662-23048-0, S. 181 (eingeschrΓ€nkte Vorschau in der Google-Buchsuche).