AT34818B - Filter paper for filtering off light-colored and light-sensitive precipitates. - Google Patents
Filter paper for filtering off light-colored and light-sensitive precipitates.Info
- Publication number
- AT34818B AT34818B AT34818DA AT34818B AT 34818 B AT34818 B AT 34818B AT 34818D A AT34818D A AT 34818DA AT 34818 B AT34818 B AT 34818B
- Authority
- AT
- Austria
- Prior art keywords
- light
- filter paper
- colored
- precipitates
- filtering
- Prior art date
Links
- 239000002244 precipitate Substances 0.000 title description 6
- 238000001914 filtration Methods 0.000 title description 4
- 239000000975 dye Substances 0.000 claims description 5
- 238000005470 impregnation Methods 0.000 claims 1
- 239000007788 liquid Substances 0.000 description 4
- FWLHAQYOFMQTHQ-UHFFFAOYSA-N 2-N-[8-[[8-(4-aminoanilino)-10-phenylphenazin-10-ium-2-yl]amino]-10-phenylphenazin-10-ium-2-yl]-8-N,10-diphenylphenazin-10-ium-2,8-diamine hydroxy-oxido-dioxochromium Chemical compound O[Cr]([O-])(=O)=O.O[Cr]([O-])(=O)=O.O[Cr]([O-])(=O)=O.Nc1ccc(Nc2ccc3nc4ccc(Nc5ccc6nc7ccc(Nc8ccc9nc%10ccc(Nc%11ccccc%11)cc%10[n+](-c%10ccccc%10)c9c8)cc7[n+](-c7ccccc7)c6c5)cc4[n+](-c4ccccc4)c3c2)cc1 FWLHAQYOFMQTHQ-UHFFFAOYSA-N 0.000 description 1
- 230000001476 alcoholic effect Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 229920000767 polyaniline Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Paper (AREA)
- Optical Filters (AREA)
Description
<Desc/Clms Page number 1>
Filtrierpapier zum Abfiltrieren hellfarbiger und lichtempfindlicher Niederschläge.
In der chemischen Analyse ist die Entfernung des abfiltrierten Niederschlages vom Filter oft mit Schwierigkeiten verbunden, da der meistens weiss oder hell gefärbte Niederschlag sich vom Filterpapier, das gewöhnlich einen weissen, immer aber einen hellen Farbton hat, nur wenig abhebt. Ferner ist in Fällen, in welchen der abgeschiedene Niederschlag vom Lichte zersetzt wird, die Filtration mittels der gebräuchlichen Filter und darauffolgenden Behandlung immer mit einer teilweisen Zersetzung des betreffenden Stosses verbunden.
Die oben erwähnten Ubetstände werden nun völlig vermieden, wenn vorliegender Erfindung gemäss zur Filtration ein Filterpapier verwendet wird, welchem mit einem gegen die Flüssigkeit
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chemischwirkendeLichtstrahlenabsorbieren.
Die Wahl der Farbstoffe muss entsprechend der Natur des Niederschlages und der zu tiltrierenden Flüssigkeit so gewählt werden, dass der Farbstoff nicht von der Flüssigkeit gelöst oder zerstört wird. Da eine grosse Anzahl von Farbstoffen bekannt ist. die in Wasser oder in alkoholischen oder ätherischen Flüssigkeiten unlöslich sind, desgleichen solche, die entweder
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besitzen, so ist die Wahl eines entsprechenden Farbstoffes an sich nicht schwierig. Beispielsweise hat sich die Verwendung von mit Anilinschwarz gefärbtem Filterpapier in vielen Fällen geeignet erwiesen.
PATENT-ANSPR1'CHE :
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**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
<Desc / Clms Page number 1>
Filter paper for filtering off light-colored and light-sensitive precipitates.
In chemical analysis, the removal of the filtered precipitate from the filter is often associated with difficulties, since the mostly white or light colored precipitate stands out only slightly from the filter paper, which is usually white but always light in color. Furthermore, in cases in which the deposited precipitate is decomposed by the light, the filtration by means of the customary filters and subsequent treatment is always associated with a partial decomposition of the relevant impact.
The above-mentioned Ubetstands are now completely avoided if, according to the present invention, a filter paper is used for the filtration, which with a against the liquid
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absorb chemically acting light rays.
The choice of dyes must be chosen according to the nature of the precipitate and the liquid to be filtered so that the dye is not dissolved or destroyed by the liquid. As a large number of dyes are known. which are insoluble in water or in alcoholic or essential liquids, likewise those which either
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own, the choice of an appropriate dye is not difficult per se. For example, the use of filter paper colored with aniline black has proven suitable in many cases.
PATENT CLAIMS:
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** WARNING ** End of DESC field may overlap beginning of CLMS **.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT34818T | 1906-12-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT34818B true AT34818B (en) | 1908-10-26 |
Family
ID=3551116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT34818D AT34818B (en) | 1906-12-31 | 1906-12-31 | Filter paper for filtering off light-colored and light-sensitive precipitates. |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT34818B (en) |
-
1906
- 1906-12-31 AT AT34818D patent/AT34818B/en active
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