Potentiometric Titration of Very Weak Acids Titration in Ethylenediamine Solution Using Platinum Electrodes

Harlow, G. A.; Noble, C. M.; Wyld, G. E. A.

doi:10.1021/ac60113a002

Cited by 37 publications

(15 citation statements)

References 7 publications

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“…It was expected, when this work was originally conceived, that the shift in potential of the polarized platinum anode would be in the same direction as the shift in potential of the polarized platinum cathode when the acidity of the solution was changed (6). Furthermore, the only previous investigation in which platinum electrodes were purposely polarized, in nonaqueous acid-base titrations, was reported by Phillip (9) who obtained conventional S-shaped titration curves.…”

Section: Resultsmentioning

confidence: 95%

“…Almost all of the work reported involved the measurement of the potential between glass and calomel electrodes with a pH meter using the general techniques of conventional pH titrations (2, 3, S). However, other electrode systems have also been investigated using zero current potentiometry such as platinum-calomel and platinum-platinum (6), glass-silver (14), and platinum (10% rhodium)graphite (8).…”

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confidence: 99%

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Application of Constant Current Potentiometry to Nonaqueous Titrations of Weak Acids

Shain¹,

Svoboda²

1959

Anal. Chem.

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replicate runs) was attained with many of the compounds investigated, and, although with poorer accuracy, very high sensitivities were demonstrated. The best solvent system for the reduction of mononitro compounds was 4-to-l methanol-to-0.5N aqueous lithium chloride solution, but other methanolwater solutions also proved acceptable.Although the main problem encountered in this study-the background current of the solvent systemcould not be eliminated, outgassing, rapid stirring, and pre-electrolysis of the supporting electrolyte solution reduced the interference to tolerable limits. REFERENCES

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Section: Resultsmentioning

confidence: 95%

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confidence: 99%

Application of Constant Current Potentiometry to Nonaqueous Titrations of Weak Acids

Shain¹,

Svoboda²

1959

Anal. Chem.

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“…85 % Thin-layer chromatography on cellulose is suitable for quality control. Cyanuric acid is determined gravimetrically as its melamine salt [49] or by potentiometric titration of a solution in DMSO/benzene with tetrabutylammonium hydroxide [50], [51]. In wastewater cyanuric acid can be determined by amperometric titration with Hg(NO 3 ) 2 [52] or by differential pulse polarography [53].…”

Section: Quality Specifications and Chemical Analysismentioning

confidence: 99%

Cyanuric Acid and Cyanuric Chloride

Huthmacher

Most

2000

Ullmann's Encyclopedia of Industrial Chemistry

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The article contains sections titled: 1. Introduction 2. Cyanuric Acid 2.1. Physical Properties 2.2. Chemical Properties 2.3. Production 2.4. Environmental Protection 2.5. Quality Specifications and Chemical Analysis 2.6. Storage and Transportation 2.7. Uses 2.8. Economic Aspects 2.9. Toxicology and Occupational Health 3. Cyanuric Chloride 3.1. Physical Properties 3.2. Chemical Properties 3.3. Production 3.4. Environmental Protection 3.5. Quality Specifications and Analysis 3.6. Storage and Transportation 3.7. Uses 3.8. Economic Aspects 3.9. Toxicology and Occupational Health

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“…In cases where the titration was performed manually, a Precision-Shell Dual AC Titrometer was used in conjunction with a titration assembly which has been described elsewhere (1). The platinum-oxygen indicating electrode was prepared by the polarization procedure (4).…”

Section: Apparatus and Proceduresmentioning

confidence: 99%

Tetrabutylammonium Hydroxide as Titrant in Nonaqueous Media

Harlow¹,

Noble²,

Wyld³

1956

Anal. Chem.

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Tetrabutylammonium hydroxide in nearly anhydrous isopropyl alcohol solution has a number of advantages over more conventional titrants for very weak acids in nonaqueous solvents. The tetrabutylammonium salts of most weak acids are more soluble in organic solvents than are the corresponding sodium or potassium salts; thus, difficulties due to precipitation are minimized.The titrant can be used with the glass electrode without the pronounced loss in sensitivity in the highly alkaline region which is encountered with titrants containing sodium and potassium. The titrant can be prepared by passing a solution of tetrabutylammonium iodide in isopropyl alcohol through an anion exchange column which has been converted to the hydroxide form with potassium hydroxide.

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Potentiometric Titration of Very Weak Acids Titration in Ethylenediamine Solution Using Platinum Electrodes

Cited by 37 publications

References 7 publications

Application of Constant Current Potentiometry to Nonaqueous Titrations of Weak Acids

Application of Constant Current Potentiometry to Nonaqueous Titrations of Weak Acids

Cyanuric Acid and Cyanuric Chloride

Tetrabutylammonium Hydroxide as Titrant in Nonaqueous Media

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