DE2756010C2 - Cleaning agent for removing residues containing silver - Google Patents

Cleaning agent for removing residues containing silver

Info

Publication number
DE2756010C2
DE2756010C2 DE19772756010 DE2756010A DE2756010C2 DE 2756010 C2 DE2756010 C2 DE 2756010C2 DE 19772756010 DE19772756010 DE 19772756010 DE 2756010 A DE2756010 A DE 2756010A DE 2756010 C2 DE2756010 C2 DE 2756010C2
Authority
DE
Germany
Prior art keywords
iron
acid
cleaning
iii
cleaning agent
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
Application number
DE19772756010
Other languages
German (de)
Other versions
DE2756010A1 (en
Inventor
Des Erfinders Auf Nennung Verzicht
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE19772756010 priority Critical patent/DE2756010C2/en
Publication of DE2756010A1 publication Critical patent/DE2756010A1/en
Application granted granted Critical
Publication of DE2756010C2 publication Critical patent/DE2756010C2/en
Expired legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/02—Inorganic compounds ; Elemental compounds
    • C11D3/04—Water-soluble compounds
    • C11D3/046—Salts
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/02—Inorganic compounds ; Elemental compounds
    • C11D3/04—Water-soluble compounds
    • C11D3/042—Acids
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/39—Organic or inorganic per-compounds
    • C11D3/3902—Organic or inorganic per-compounds combined with specific additives
    • C11D3/3905—Bleach activators or bleach catalysts
    • C11D3/3932—Inorganic compounds or complexes
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/39—Organic or inorganic per-compounds
    • C11D3/3942—Inorganic per-compounds

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Detergent Compositions (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)

Description

Es ist bekannt, daß sich silberhaltige Rückstände, die sich bei fotografischen Arbeiten an den Geräten abscheiden, durch schwefelsaure Lösungen, weiche Bichromat enthalten, entfernen lassen (DE-PS 10 68 840).It is known that residues containing silver, the precipitate on the devices during photographic work, through sulfuric acid solutions, soft bichromate contain, have it removed (DE-PS 10 68 840).

Diese Lösungen sind jedoch giftig und können nicht ohne weiteres in das Abwasser abgelassen werden.However, these solutions are poisonous and cannot be easily drained into the wastewater.

Es wurde nun gefunden, daß man hierfür saure Lösungen von Peroxydisulfatverbindungen verwenden kann, wenn Eisen-III-salze zugesetzt werden.It has now been found that acidic solutions can be used for this of peroxydisulfate compounds can be used if ferric salts are added.

Das Reinigungsmittel besteht deshalb aus der wässerigen Lösung einer Säure, einer Peroxydisulfatverbindung und einer Eisen-III-verbindung. Zweckmäßigerweise wird noch eine kleine Menge eines zusätzlichen Aktivators zugesetztThe cleaning agent therefore consists of the watery one Solution of an acid, a peroxydisulphate compound and an iron (III) compound. Appropriately a small amount of an additional activator is added

Als Säure kann jede Säure verwendet werden, die zur Bildung eines löslichen Sibersalzes befähigt ist, z. B. Schwefelsäure oder Amidosulfonsäure.Any acid capable of forming a soluble silver salt can be used as the acid, e.g. B. Sulfuric acid or sulfamic acid.

Als Peroxydisulfatverbindung sind z. B. Ammoniumoder Alkalisalze oder die freie Säure geeignetAs a peroxydisulfate compound, for. B. ammonium or Alkali salts or the free acid are suitable

Als Eisen-III-verbindung ist z. B. das Eisen-III-sulfat geeignet Auch Eisen-II-verbindungen, welche in der Lösung zu Eisen-III-verbindungen oxydiert werden, können verwendet werden.As an iron (III) compound, for. B. iron (III) sulfate Also suitable iron-II compounds, which are oxidized to iron-III compounds in the solution, can be used.

Als zusätzliche Aktivatoren sind Salze von Metallen geeignet, die verschiedene Wertigkeiisstufen besitzen, wie Mangan, Chrom oder Cerium. Auch Edelmetallverbindungen wirken aktivierend. Bevorzugt sind Silbersalze, welche dem Reinigungsmittel von vornherein zugesetzt werden. Durch den Zusatz der Sibersalze werden bei der Herstellung der wässerigen Lösung zugleich im Wasser enthaltene Chlorionen, die bei der Reinigung stören können, als unlösliches Silberchlorid ausgefällt. Geeignet sind Silbernitrat oder Silbersulat Zusätzlich kann ein Netzmittel zugesetzt werden, wodurch die Wirkung des Reinigungsmittels noch verbessert wird.Salts of metals that have different valency levels are suitable as additional activators, like manganese, chromium or cerium. Precious metal compounds also have an activating effect. Silver salts are preferred, which are added to the cleaning agent from the start. By adding the silver salts During the preparation of the aqueous solution, chlorine ions contained in the water at the same time, which are used during cleaning can interfere, precipitated as insoluble silver chloride. Silver nitrate or silver sulphate are also suitable a wetting agent can be added, which further improves the effectiveness of the cleaning agent.

Beispiel 3
Es werden gemischt:Example 3
There are mixed:

400 g Amidosulfonsäure
400 g Natriumperoxydisulfat
lOOgEisen-II-sulfat
0,5 g Kaliumbichromat400 g of sulfamic acid
400 g sodium peroxydisulfate
100 iron (II) sulfate
0.5 g potassium dichromate

2 g Silbersufat2 g of silver sulfate

Nach der Reinigung wird die Reinigungslösung mit Alkali, z. B. mit Natronlauge neutralisiert Um zu verhindem, daß hierbei Eisenhydroxyd und eventuell andere Metallhydroxyde ausfallen, wird dem Neutralisationsmittel eine ausreichende Menge eines üblichen Komplexbildners, z. B. 1 —2 Mol Natriumgluconat, zugesetztAfter cleaning, the cleaning solution is mixed with alkali, e.g. B. neutralized with caustic soda To prevent that iron hydroxide and possibly other metal hydroxides precipitate here, a sufficient amount of a customary complexing agent is added to the neutralizing agent, z. B. 1-2 moles of sodium gluconate added

Claims (7)

Patentansprüche:Patent claims: 1. Reinigungsmittel zur Entfernung silberhaltiger Rückstände von Geräten und Wannen, dadurch gekennzeichnet, daß es eine Säure, eine Peroxydisulfatverbindung und ein Eisen-IlI-salz sowie gegebenenfalls einen zusätzlichen Aktivator enthält1. Cleaning agent for removing silver-containing Residues from devices and tubs, thereby characterized in that it is an acid, a peroxydisulfate compound and contains an iron (II) salt and optionally an additional activator 2. Mittel nach Anspruch 1, dadurch gekennzeichnet, daß als Säure Schwefelsäure oder Amidosulfonsäure verwendet wird.2. Means according to claim 1, characterized in that that sulfuric acid or sulfamic acid is used as the acid. 3. Mittel nach Anspruch 1 und 2, dadurch gekennzeichnet, daß als Perverbindung Ammonium- oder Alkaliperoxydisulfat verwendet wird.3. Means according to claim 1 and 2, characterized in that ammonium or ammonium is used as the per compound Alkali peroxydisulfate is used. 4. Mittel nach den Ansprüchen 1 bis 3, dadurch gekennzeichnet, daß als Eisensalz Eisen-III-sulfat verwendet wird.4. Composition according to claims 1 to 3, characterized in that iron (III) sulfate is used as the iron salt is used. 5. Mittel nach den Ansprüchen 1 bis 4, dadurch gekennzeichnet, da& als zusätzlicher Aktivator ein Silbersalz verwendet wird.5. Agent according to claims 1 to 4, characterized in that there is an additional activator Silver salt is used. 6. Verwendung des Reinigungsmittels nach den Ansprüchen 1 bis 5, in wässeriger Lösung zum Reinigen von mit silberhaltigen Rückständen verunreinigten Geräten.6. Use of the cleaning agent according to claims 1 to 5, in an aqueous solution for cleaning from devices contaminated with residues containing silver. 7. Verwendung nach Anspruch 6, dadurch gekennzeichnet, daß das Reinigungsmittel nach erfolgter Reinigung neutralisiert wird, wobei dem Neutralisationsmittel ein Komplexbildner, insbesondere Natriumgluconat, zugesetzt wird.7. Use according to claim 6, characterized in that that the cleaning agent is neutralized after cleaning, the neutralizing agent a complexing agent, in particular sodium gluconate, is added. Die wässerige Lösung des Reinigungsmittels enthält zweckmäßigerweise etwa:The aqueous solution of the cleaning agent expediently contains about: 2 bis 15% Peroxydisulfat
Ibis 10% Säure
1 bis 10% Eisen-III-salz
0,01 bis 0,2% Aktivator2 to 15% peroxydisulfate
Ibis 10% acid
1 to 10% iron (III) salt
0.01 to 0.2% activator Beispiel 1
Es werden gemischt:example 1
There are mixed: 500 g Amidosulfonsäure
500 g Ammoniumperoxydisulfat 100 g Eisen-III-sulfat
2 g Silbernitrat500 g sulfamic acid
500 g ammonium peroxydisulphate 100 g iron (III) sulphate
2 g of silver nitrate Dieses Reinigungsmittel bewirkt, aufgelöst in ca. 15 bis 25 Liter Wasser eine schnelle und gründliche Reinigung.von Photoentwicklungs- und Fixierbädern und den entsprechenden Maschinen und Geräten.This detergent causes dissolved in approx. 15 up to 25 liters of water a quick and thorough cleaning of photo developing and fixing baths and the corresponding machines and devices. Beispiel 2
In 25 Liter Wasser werden gelöst:Example 2
In 25 liters of water are dissolved: 300 g Schwefelsäure 90%ig
300 g Kaliumperoxydisulfat
250 g Eisen-III-sulfat
3gCer-IV-sulfat300 g sulfuric acid 90%
300 g of potassium peroxydisulfate
250 g iron (III) sulfate
3gCer IV sulfate 10 g nichtionogene waschaktive Substanz10 g non-ionic detergent substance
DE19772756010 1977-12-15 1977-12-15 Cleaning agent for removing residues containing silver Expired DE2756010C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19772756010 DE2756010C2 (en) 1977-12-15 1977-12-15 Cleaning agent for removing residues containing silver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772756010 DE2756010C2 (en) 1977-12-15 1977-12-15 Cleaning agent for removing residues containing silver

Publications (2)

Publication Number Publication Date
DE2756010A1 DE2756010A1 (en) 1979-06-21
DE2756010C2 true DE2756010C2 (en) 1986-01-02

Family

ID=6026252

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19772756010 Expired DE2756010C2 (en) 1977-12-15 1977-12-15 Cleaning agent for removing residues containing silver

Country Status (1)

Country Link
DE (1) DE2756010C2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU668193B2 (en) * 1992-08-19 1996-04-26 Medefield Pty Ltd Photographic equipment cleaner
DE19942224A1 (en) * 1999-09-03 2001-03-08 Henkel Kgaa Use of transition metal complex compounds to enhance the bleaching effect of peroxygen compounds in acidic systems
CN112143567A (en) * 2019-06-26 2020-12-29 诺翔新材料(无锡)有限公司 Photographic fixing system cleaning agent and preparation method thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NICHTS-ERMITTELT

Also Published As

Publication number Publication date
DE2756010A1 (en) 1979-06-21

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D2 Grant after examination
8364 No opposition during term of opposition