FR1167530A - Method and device for examining solid, liquid or gaseous substances for the presence of substances which form azo dyes - Google Patents

Method and device for examining solid, liquid or gaseous substances for the presence of substances which form azo dyes

Info

Publication number
FR1167530A
FR1167530A FR1167530DA FR1167530A FR 1167530 A FR1167530 A FR 1167530A FR 1167530D A FR1167530D A FR 1167530DA FR 1167530 A FR1167530 A FR 1167530A
Authority
FR
France
Prior art keywords
substances
liquid
azo dyes
form azo
gaseous
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
Other languages
French (fr)
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.)
Leuna Werke GmbH
Leuna Werke Walter Ulbright Germany VEB
Original Assignee
Leuna Werke GmbH
Leuna Werke Walter Ulbright Germany VEB
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 Leuna Werke GmbH, Leuna Werke Walter Ulbright Germany VEB filed Critical Leuna Werke GmbH
Application granted granted Critical
Publication of FR1167530A publication Critical patent/FR1167530A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
    • G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
    • G01N21/78—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour

Landscapes

  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Plasma & Fusion (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
FR1167530D 1955-09-29 1955-09-29 Method and device for examining solid, liquid or gaseous substances for the presence of substances which form azo dyes Expired FR1167530A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1167530T 1955-09-29

Publications (1)

Publication Number Publication Date
FR1167530A true FR1167530A (en) 1958-11-26

Family

ID=9655590

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1167530D Expired FR1167530A (en) 1955-09-29 1955-09-29 Method and device for examining solid, liquid or gaseous substances for the presence of substances which form azo dyes

Country Status (1)

Country Link
FR (1) FR1167530A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114199803A (en) * 2021-12-16 2022-03-18 深圳天祥质量技术服务有限公司 Method for detecting sulfonated and non-sulfonated primary aromatic amine in toner

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114199803A (en) * 2021-12-16 2022-03-18 深圳天祥质量技术服务有限公司 Method for detecting sulfonated and non-sulfonated primary aromatic amine in toner

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