DE1000170B - Test tube for the quantitative determination of vapors of hydrofluoric acid and volatile fluorides - Google Patents

Test tube for the quantitative determination of vapors of hydrofluoric acid and volatile fluorides

Info

Publication number
DE1000170B
DE1000170B DEA23094A DEA0023094A DE1000170B DE 1000170 B DE1000170 B DE 1000170B DE A23094 A DEA23094 A DE A23094A DE A0023094 A DEA0023094 A DE A0023094A DE 1000170 B DE1000170 B DE 1000170B
Authority
DE
Germany
Prior art keywords
hydrofluoric acid
test tube
quantitative determination
vapors
hydrochloric acid
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.)
Pending
Application number
DEA23094A
Other languages
German (de)
Inventor
Dr Hermann Heidrich
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Auergesellschaft GmbH
Original Assignee
Auergesellschaft GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Auergesellschaft GmbH filed Critical Auergesellschaft GmbH
Priority to DEA23094A priority Critical patent/DE1000170B/en
Publication of DE1000170B publication Critical patent/DE1000170B/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
    • G01N31/22—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using chemical indicators

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  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Molecular Biology (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Biophysics (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)

Description

Prüfröhrchen für die quantitative Bestimmung von Dämpfen der Flußsäure und flüchtiger Fluoride Die Erfindung betrifft! ein mit körnigen Reaktions-und Anzeigestoffen gefülltes Prüfröhrchen zum quantitativen Nachweis von- in der Luft und anderen Gasen enthaltenen Dämpfen der Flußsäure und flüchtigeir Fluoride. Sie liegt darin, daß der Reaktions- und, Anzeigestoff aus auf einem Trägerstoff, wie Kieselgel, Bims od. dgl., aufgebrachtem Eise nrhodanid, dem eine geringe Salzsäuremenge zugesetzt ist, besteht.Test tube for the quantitative determination of hydrofluoric acid vapors and volatile fluorides The invention relates to! one with granular reactants and indicators Filled test tube for the quantitative detection of - in the air and other gases containing fumes of hydrofluoric acid and volatile fluoride. It is that the reaction and display substance on a carrier such as silica gel, pumice or the like, applied iron rhodanide to which a small amount of hydrochloric acid was added is, exists.

Der Anzeigestoff wird gemäß der Erfindung zweckmäßig so hergestellt, daß der Trägerstoff, z. B. das Kieselgel, mit einer ätherischen Eisen-Rhodanid-Lösung getränkt wird, der vorher einige Tropfen kon zentriefrter Salzsäure zugegeben, wurden. Dann wird der Äther von dem körnigen Anzeigestoff abgetrieben. Im nunmehr trockenen Zustand wird die Anzeigemasse in. die Röhrchen eingefüllt. Dann werden die Röhrchen zugeschmolzen.According to the invention, the display material is expediently produced in such a way that that the carrier, e.g. B. the silica gel, with an essential iron-rhodanide solution is soaked, which previously added a few drops of concentrated hydrochloric acid. Then the ether is driven off by the granular indicator substance. In the now dry State, the display compound is poured into the tubes. Then the tubes melted shut.

Bei der Herstellung der Anzeigemasse macht sich folgendes bemerkbar: Wenn die ätherische Eisen Rhodanid-Lösung, der einige Tropfen Salzsäure zugesetzt sind, auf die Trägersubstanz aufgetragen wi@rdi, so ist die entstehende Masse zuerst rötlich gefärbt. Beim Abdampfen des Äthers an der Luft wird die Masse aber 'hellgelb bis farblos.The following is noticeable during the production of the display mass: When the essential iron rhodanide solution, which added a few drops of hydrochloric acid are, wi @ rdi applied to the carrier substance, the resulting mass is first colored reddish. When the ether evaporates in the air, however, the mass becomes' light yellow to colorless.

Beim Durchtritt von Flußsäu-redämpfen in die Anzeigemasse tritt nun wider Erwarten nicht eine weitere Entfärbung ein, sondern es tritt eine starke Rotfärbung auf, die bei weiterem Verlauf des Durchbritts nach oben als Zone fortwandert.When river acid steams pass into the display mass, now occurs Contrary to expectations, there is no further discoloration, but a strong red coloration which, as the breakthrough continues, moves upwards as a zone.

Das Fortschreiten dieser Zone, hinter der wieder eine Entfärbung eintritt, ist das Maß für die Konzentration der Flußsäure in dem geprüften Luftvolumen.The progression of this zone, behind which a discoloration occurs again, is the measure for the concentration of hydrofluoric acid in the tested air volume.

Im Gegensatz zur Flußsäure tritt bei Durchtritt von Salzsäure in die Anzeigemasse des Röhrchens eine völlige Entfärbung der gelben Schicht ein.In contrast to hydrofluoric acid, hydrochloric acid enters the Indicator mass of the tube shows a complete discoloration of the yellow layer.

Beispiel Die Anzeigenrasse wird wie folgt hergestellt: io g Kieselgel wird mit io ml einer o,5o/oigen ätherischen Eisen-Rhodanid-Lösung, der 3 Tropfen konzentriertes IICI (i,i9) zugesetzt sind, versetzt. Die Masse wird unter öfterem Umrühren an der Luft stehengelassen, bis sie hellrötlichgelb geworden und rieselnd ist. Sie wird dann, wie üblich verfüllt. Die ätherische Eisen-Rhodanid-Lösung stellt man her, indem man in. je ioo ml Wasser o,95 g Fe Cl#3- 6 H20 und o,8 g N H4 C N S löst, beide Lösungen zusammengibt und aus dieser tiefroten, o,5fl/oigen, wäßrigen Lösung das E,ilsenrhodanid ausäthert, so daß am Schluß die ätherische Lösung wieder Zoo ml beträgt.Example The display breed is made as follows: io g of silica gel is mixed with 10 ml of a 0.5% essential iron-rhodanide solution containing 3 drops concentrated IICI (i, i9) are added. The crowd gets under more often Stir in the air until they have turned light reddish yellow and trickling is. It is then backfilled as usual. The essential iron-rhodanide solution represents by adding o.95 g Fe Cl # 3-6 H20 and 0.8 g N H4 C N in. 100 ml of water each S dissolves, brings both solutions together and from this deep red, 0.5% aqueous Solution that ethers out the E, ilsenrhodanid, so that at the end the ethereal solution is restored Zoo ml is.

Claims (1)

PATENTANSPRÜCHE: i. Mit körnigiem Reaktions- und Anzeigestoff gefülltes Prüfröhrchen für die quantitative Bestimmung von. Dämpfen der Flußsäure und flüchtiger Fluoride, dadurch gle.Iflennzeichnet, daß das Reaktions- und Anzeigemittel des Röhrchens aus auf einem Trägerstoff, wie Kieselgel, Bims od. dgl., aufgebraohtem Ei,senrhodandd mit geringem Salzsäuregehalt besteht. Verfahren zur Herstellung der des Prüfröhrchens nach Anspruch i, dadurch gekennzeichnet, daß der Trägerstoff, z. B. Kieselgel, mit einer ätherischen Ei-sern-Rhodianid@-Lösung getränkt wird, der vorher einige Tropfen konzentrierter Salzsäure zugesetzt wurden:, wonach der Äther abgetrieben wü,rd.PATENT CLAIMS: i. Filled with granular reaction and indicator substance Detector tubes for the quantitative determination of. Steaming of hydrofluoric acid and more volatile Fluoride, characterized in that the reaction and display means of the tube on a carrier such as silica gel, pumice or the like., egg, senrhodandd with low hydrochloric acid content. Process for the manufacture of the test tube according to claim i, characterized in that the carrier material, e.g. B. silica gel, with an essential egg-sern-rhodianide @ solution is soaked in a few drops beforehand concentrated hydrochloric acid were added: after which the ether was driven off, approx.
DEA23094A 1955-07-19 1955-07-19 Test tube for the quantitative determination of vapors of hydrofluoric acid and volatile fluorides Pending DE1000170B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEA23094A DE1000170B (en) 1955-07-19 1955-07-19 Test tube for the quantitative determination of vapors of hydrofluoric acid and volatile fluorides

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA23094A DE1000170B (en) 1955-07-19 1955-07-19 Test tube for the quantitative determination of vapors of hydrofluoric acid and volatile fluorides

Publications (1)

Publication Number Publication Date
DE1000170B true DE1000170B (en) 1957-01-03

Family

ID=6925351

Family Applications (1)

Application Number Title Priority Date Filing Date
DEA23094A Pending DE1000170B (en) 1955-07-19 1955-07-19 Test tube for the quantitative determination of vapors of hydrofluoric acid and volatile fluorides

Country Status (1)

Country Link
DE (1) DE1000170B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4933144A (en) * 1987-03-12 1990-06-12 Dragerwerk Aktiengesellschaft Colorimetric gas measuring device for fluorine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4933144A (en) * 1987-03-12 1990-06-12 Dragerwerk Aktiengesellschaft Colorimetric gas measuring device for fluorine

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