DE411661C - Procedure for the control of tannins during production and use on the farm - Google Patents
Procedure for the control of tannins during production and use on the farmInfo
- Publication number
- DE411661C DE411661C DEB111834D DEB0111834D DE411661C DE 411661 C DE411661 C DE 411661C DE B111834 D DEB111834 D DE B111834D DE B0111834 D DEB0111834 D DE B0111834D DE 411661 C DE411661 C DE 411661C
- Authority
- DE
- Germany
- Prior art keywords
- control
- tannins
- farm
- procedure
- during production
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 229920001864 tannin Polymers 0.000 title claims description 15
- 239000001648 tannin Substances 0.000 title claims description 15
- 235000018553 tannin Nutrition 0.000 title claims description 15
- 238000000034 method Methods 0.000 title claims description 12
- 238000004519 manufacturing process Methods 0.000 title claims description 4
- 239000000243 solution Substances 0.000 claims description 8
- 239000000126 substance Substances 0.000 claims description 3
- 239000012895 dilution Substances 0.000 claims description 2
- 238000010790 dilution Methods 0.000 claims description 2
- 150000003839 salts Chemical class 0.000 description 4
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000003605 opacifier Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 108010010803 Gelatin Proteins 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 229930013930 alkaloid Natural products 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- KMPWYEUPVWOPIM-LSOMNZGLSA-N cinchonine Chemical class C1=CC=C2C([C@@H]([C@H]3N4CC[C@H]([C@H](C4)C=C)C3)O)=CC=NC2=C1 KMPWYEUPVWOPIM-LSOMNZGLSA-N 0.000 description 1
- 238000004737 colorimetric analysis Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000012084 conversion product Substances 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 239000008273 gelatin Substances 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 235000011852 gelatine desserts Nutrition 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/44—Resins; Plastics; Rubber; Leather
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
Description
Verfahren zur Kontrolle von Gerbstoffen bei der Herstellung und Verwendung im Betriebe. Zur quantitativen Bestimmung von Gerbstoffen sind hauptsächlich folgende Methoden bekannt: r. Adsorptionsmethoden, z. B. die Hautpulvermethoden.Process for the control of tanning agents during manufacture and use in the company. For the quantitative determination of tannins, the following are the main ones Methods known: r. Adsorption methods, e.g. B. the skin powder methods.
2. Fällungsmethoden, z. B. mit Gelatine. 3. Kolorimetrische Methoden.2. Precipitation methods, e.g. B. with gelatin. 3. Colorimetric methods.
Die Adsorptionsmethoden sind umständlich und teuer, die übrigen Methoden sind sehr wenig genau.The adsorption methods are cumbersome and expensive, the other methods are very imprecise.
Es wurde nun gefunden, daß man auf sehr bequeme Weise eine exakte Kontrolle der Gerbstoffe bei ihrer Herstellung und Verwendung im Betriebe bewirken kann, wenn man die Lösungen der Gerbstoffe in starker Verdünnung mit solchen Stoffen behandelt, die mit den verdünnten Gerbstofflösungen keine eigentlichen Niederschläge, sondern milchige Trübungen oder nebelartige Suspensionen hervorrufen, deren Dichte einen Rückschluß auf die Menge des vorhandenen Gerbstoffs gestattet. Als Trübungsmittel kommen beispielsweise Alkaloide, ihre Salze, Derivate und Umwandlungsprodukte sowie ihnen nahestehende Verbindungen, die an sich als Fällungsmittel für Gerbstoffe bekannt sind, «-eiter ganz allgemein stickstoffhaltige Basen und ihre Salze sowie Mischungen aller dieser Stoffe untereinander oder mit anderen Gerbstoffällungsmitteln in Betracht. Durch Zusätze (z. B. von Säuren oder Salzen) kann man die Empfindlichkeit der Methode erhöhen oder abschwächen, um sie dem speziellen Verwendungszweck anzupassen. Das Kontrollverfahren ist anwendbar sowohl in den Betrieben der Gerbstoffextrakt-und Tanninfabriken, z. B. um festzustellen, ob und wie oft ein gegebenes Pflanzenmaterial nach einmaliger Auskochung noch weiter auszulaugen ist, wie auch in Gerbereien und weiter in Färbereien, die Tannin oder andere Gerbstoffbeizen verwenden und den Gehalt ihrer Ansätze kontrollieren wollen.It has now been found that an exact Effect control of tannins during their production and use in the company can, if one uses the solutions of the tannins in strong dilution with such substances treated, which with the diluted tannin solutions no actual precipitates, but rather milky cloudiness or mist-like suspensions cause their density a conclusion about the amount of tannin present is possible. As an opacifier come for example alkaloids, their salts, derivatives and conversion products as well related compounds known per se as precipitants for tannins are, «-more generally nitrogen-containing bases and their salts and mixtures all of these substances with one another or with other tannin precipitants. Additions (e.g. of acids or salts) can increase the sensitivity of the method increase or decrease in order to adapt it to the specific purpose. That Control method is applicable both in the operations of the tannin extract and Tannin factories, e.g. B. to determine if and how often a given plant material After boiling once, it has to be leached further, as is the case in tanneries and further in dye works that use tannin or other tannin stains and the content want to control their approaches.
Bei Anwendung des neuen Verfahrens arbeitet man beispielsweise so, daß man die filtrierte und in geeigneter Weise stark verdünnte Gerbstöfflösung mit dem Trübungsmittel versetzt und die erhaltene Trübung mit im Betriebe befindlichen Standardgläsern oder mit Proben ähnlich behandelter Gerbstofflösungen bekannten Gehalts oder anderen Vergleichsobjekten, z. B. mit einer gemalten oder gedruckten Trübungsskala, vergleicht, die hinter oder neben der zu kontrollierenden Probe angeordnet wird.When using the new method, one works, for example, as follows: that the filtered and suitably highly diluted tannin solution with added to the opacifier and the opacity obtained with those in the company Standard glasses or with samples of similarly treated tanning solutions Salary or other comparable objects, e.g. B. with a painted or printed one Turbidity scale, compares those placed behind or next to the sample to be checked will.
Man kann so außerordentlich einfach und schnell den wirksamen Gehalt eines Gerbstoffs unmittelbar im Betriebe feststellen, und zwar ohne daß hierzu besonders vorgebildete Personen erforderlich wären. Beispiel i.You can find the effective salary in this way extremely easily and quickly of a tanning agent can be found directly in the company, without any particular need to do so trained people would be required. Example i.
io ccm einer Tanninlösung von ungefähr o,i Prozent Gehalt geben mit 5 ccm einer Cinchoninsalzlösung eine deutlich erkennbare milchige Trübung, deren Gegenüberstellung mit Vergleichsproben bekannten Gehalts oder mit einer Trübungsskala ohne weiteres eine scharfe Kontrolle des Gehalts ergibt. Bei konzentrierteren Lösungen wird vorher durch Zusatz einer entsprechenden Wassermenge auf eine Konzentration unter r Prozent verdünnt. Beispiel e. Ausführung wie in Beispiel i, aber unter Verwendung von wäßrigen Lösungen von Anilin und seinen Salzen.io ccm of a tannin solution of about o, i percent content give with 5 cc of a cinchonine salt solution a clearly recognizable milky cloudiness, whose Comparison with comparison samples of known content or with a turbidity scale readily gives a sharp control of the content. at more concentrated solutions are made beforehand by adding an appropriate amount of water diluted to a concentration below r percent. Example e. Execution as in example i, but using aqueous solutions of aniline and its salts.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEB111834D DE411661C (en) | 1923-11-25 | 1923-11-25 | Procedure for the control of tannins during production and use on the farm |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEB111834D DE411661C (en) | 1923-11-25 | 1923-11-25 | Procedure for the control of tannins during production and use on the farm |
Publications (1)
Publication Number | Publication Date |
---|---|
DE411661C true DE411661C (en) | 1925-04-03 |
Family
ID=6993047
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEB111834D Expired DE411661C (en) | 1923-11-25 | 1923-11-25 | Procedure for the control of tannins during production and use on the farm |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE411661C (en) |
-
1923
- 1923-11-25 DE DEB111834D patent/DE411661C/en not_active Expired
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