Determination of Hydroperoxides in Petroleum Products.

Walker, David C.; Conway, H. S.

doi:10.1021/ac60078a020

Cited by 11 publications

(8 citation statements)

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“…The development of peroxides during aging has been followed using a modification of the arsenious acid reaction method reported by Walker and Conway (10). Experience confirms the conclusions of the above authors that this method.…”

Section: Experimental Worksupporting

confidence: 55%

Effect of Alkyl Phenols on the Storage and Manifold Stability of Gasolines

Nixon¹,

Minor²,

Calhoun³

1956

Ind. Eng. Chem.

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Section: Experimental Worksupporting

confidence: 55%

Effect of Alkyl Phenols on the Storage and Manifold Stability of Gasolines

Nixon¹,

Minor²,

Calhoun³

1956

Ind. Eng. Chem.

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“…To test this, a mixture consisting of 0.35 gram of «-octyl mercaptan, 1.09 of isoamyl disulfide (isopentyl disulfide), 1.27 of diphenyl sulfide, and 1.22 of thiophene was dissolved in 1 liter of the benzene-heptane solvent containing four hydroperoxides to bring the peroxide number to about 13 (some peroxide is consumed through oxidation of the sulfur compounds). The unreacted peroxides were then analyzed by the arsenite (9) and titrator methods.…”

Section: Resultsmentioning

confidence: 99%

“…The titrator method was tested on various petroleum products with and without added hydroperoxides. The same samples were analyzed by the arsenite method (9) for comparison because the reference iodometric method (4) could not be used because of the color of the samples. Table II reports the results of duplicate determinations.…”

Section: Methodsmentioning

confidence: 99%

“…The ferrous method (10) is shown by Kolthoff and Medalla ( ) to be subject to error and not reliably accurate. The arsenite method of Walker and Conway (9) is applicable only to hydroperoxides. The negative hydroperoxide numbers are attributed to'the presence of reducing agents in the sample (6,9).…”

mentioning

confidence: 99%

“…The arsenite method of Walker and Conway (9) is applicable only to hydroperoxides. The negative hydroperoxide numbers are attributed to'the presence of reducing agents in the sample (6,9).…”

mentioning

confidence: 99%

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Automatic Titration of Peroxides in Petroleum Products

Matthews¹,

Patchan²

1959

Anal. Chem.

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To investigate the accuracy of the method, the samples were run in a random fashion. The hydrogen content of a lot of uranium tetrafluoride was established by averaging the results of 10 determinations (sample 4, Table II). Another sample of the same lot was spiked with 33.0 p.p.m. hydrogen in the form of barium chloride dihydrate, and 10 more determinations were run (sample 5, Table II). The difference between the averages of the amount of hydrogen found and the residual is 35.4 p.p.m. At the 95% confidence level this value is not significantly different from 33.0, the theoretical value of the spike. Consequently, the method is considered accurate.The method was used to determine water in refractory magnesium fluoride (Table III). In the range studied the average relative precision is ± 16% at the 95% confidence level. Because a 10-gram sample was the largest that Table 111. Hydrogen Present as Water and/or Hydrogen Fluoride

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