PL41005B1 - - Google Patents
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- Publication number
- PL41005B1 PL41005B1 PL41005A PL4100557A PL41005B1 PL 41005 B1 PL41005 B1 PL 41005B1 PL 41005 A PL41005 A PL 41005A PL 4100557 A PL4100557 A PL 4100557A PL 41005 B1 PL41005 B1 PL 41005B1
- Authority
- PL
- Poland
- Prior art keywords
- furfurol
- air
- mass
- acetic acid
- filled
- Prior art date
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- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 claims description 12
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 11
- XPFVYQJUAUNWIW-UHFFFAOYSA-N furfuryl alcohol Chemical compound OCC1=CC=CO1 XPFVYQJUAUNWIW-UHFFFAOYSA-N 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 229960000583 acetic acid Drugs 0.000 claims description 5
- 239000012362 glacial acetic acid Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 2
- 229920006395 saturated elastomer Polymers 0.000 claims description 2
- 239000000741 silica gel Substances 0.000 claims description 2
- 229910002027 silica gel Inorganic materials 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 description 6
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 239000000499 gel Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- HYBBIBNJHNGZAN-UHFFFAOYSA-N furfural Chemical compound O=CC1=CC=CO1 HYBBIBNJHNGZAN-UHFFFAOYSA-N 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
Description
Opublikowano dnia 15 maja 1958 r. ^at**. Sol to Ul (06 ,..Uji9Bei POLSKIEJ RZECZYPOSPOLITEJ LUDOWEJ OPIS PATENTOWY Nr 41005 KI. 421, 4/06 Centralny Instytut Ochrony Pracy *) Warszawa, Polska Sposób wykrywania oraz okreslania stezenia par aniliny w powietrzu Patent trwa od dnia 26 kwietnia 1957 r.Przedmiotem wynalazku jest sposób wykry¬ wania oraz okreslania stezenia par analiny w powietrzu, z wykorzystaniem znanej barwnej reakcji jaka daje anilina z mieszanina furfu¬ rolu i kwasu octowego lodowatego. Sposób wedlug wynalazku, polega na przepuszczaniu badanego powietrza przez rurke wskaznikowa, wypelniona masa stanowiaca zel krzemionkowy, nasycany mieszanina furfurolu i kwasu octo¬ wego lodowatego, zawierajaca 2—6% olej fur¬ furolu. Przy przeciaganiu przez rurke wskazni¬ kowa odpowiedniej ilosci powietrza zawieraja¬ cego aniline, moze reakcyjna zabarwic sie na kolor czerwony. Z dlugosci zabarwionej war¬ stwy przy przeciagnieciu okreslonej ilosci ba¬ danego powietrza, lub z ilosci przeciagnietego *) Wlasciciel patentu oswiadczyl, ze twórca wyna¬ lazku j«t mgr Stefan Zawadzki. powietrza powodujacego okreslone zabarwienie masy reakcyjnej, okresla sie zawartosc anili¬ ny. Do przygotowania masy reakcyjnej, stosu¬ je sie zel tozemionkowy wysuszony w tempe¬ raturze 180°C o srednicy ziarna np. 0,4 — 0,7 mm i zdolnosci absorbcyjnej 40 — 60% wa¬ gowych wzgledem par benzenu. Zel zalewa sie roztworem furfurolu i kwasu octowego lodo¬ watego, przy czym ilosc furfurolu do kwasu wynosi 2—6%, w stosunku objetosciowym. Nad¬ miar roztworu odciaga sie na lejkiu pompka ssaca, a mase suszy w temperaturze 60 — 100°C przez okolo 20 minut. Wysuszona mase reak¬ cyjna, rozklada sie na pflycie szklanej lub por¬ celanowej na okolo 10 — 24 godzin, przy czym grubosc warstwy nie powinna przekraczac 10 mm.Cienkoscienna rurke z bezbarwnego szkla odlugosci okolo 100 mm i srednicy wewnetrznej okolo 6,0 mm napelnia sie masa reakcyjna, po czym konce rurki' zatapia sie. Rurka wskazni¬ kowa, otrzymana sposobem wedlug wynalazku, umozliwia wykrycie w powietrzu obecnosci par aniliny juz przy stezeniu 0,005 mg na 1 1. po¬ wietrza. PLPublished May 15, 1958 ^ at **. Sol to Ul (06, ... Uji9Bei OF THE POLISH PEOPLE'S REPUBLIC PATENT DESCRIPTION No. 41005 KI. 421, 4/06 Central Institute for Labor Protection *) Warsaw, Poland Method of detecting and determining the concentration of aniline vapors in the air The patent is valid from April 26, 1957. The subject of the invention is a method of detecting and determining the concentration of analine vapors in the air, using the known color reaction of aniline with a mixture of furfrol and glacial acetic acid. The method according to the invention consists in passing the test air through an indicator tube, filled with a mass of silica gel, a saturated mixture of furfurol and glacial acetic acid, containing 2-6% furol oil. When an appropriate amount of air containing aniline is drawn through the indicator tube, the reaction may turn red. From the length of the colored layer when drawing a certain amount of test air, or from the amount of drawn air *). The patent owner stated that the inventor was Stefan Zawadzki, MA. the air which causes a certain color of the reaction mass, the aniline content is determined. For the preparation of the reaction mass, a temionic gel dried at a temperature of 180 ° C. with a grain diameter of, for example, 0.4-0.7 mm, and an absorption capacity of 40-60% by weight with respect to benzene vapor, is used. The gel is poured over with a solution of furfurol and glacial acetic acid, the amount of furfurol to acid being 2 to 6% by volume. The excess solution is drawn off on the funnel with a suction pump, and the mass is dried at a temperature of 60-100 ° C for about 20 minutes. The dried reaction mass is spread over a glass or porcelain plate for about 10 - 24 hours, the thickness of the layer should not exceed 10 mm. A thin-walled tube made of colorless glass, about 100 mm long and with an internal diameter of about 6.0 mm, is filled with the reaction mass is poured and the ends of the tube are sunk. The indicator tube obtained by the method according to the invention makes it possible to detect the presence of aniline vapors in the air already at a concentration of 0.005 mg per 1 air. PL
Claims (2)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| PL41005B1 true PL41005B1 (en) | 1958-02-15 |
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