Ascaridole Studies

Beckett, A. H.; Jolliffe, G. O.

doi:10.1111/j.2042-7158.1953.tb14051.x

Cited by 3 publications

(2 citation statements)

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“…The suggestion that benzaldehyde is reduced to benzyl alcohol in acid medium is contrary to the results reported previously (317), that only hvdrobenzoin was isolated in a large-scale electrolysis of benzaldehyde at pH 1.3. A similar study of 39 other benzaldehydes has been carried out to determine the effect of substituents on the reduction of the aldehyde group (157). The half-wave potentials at pH 13 give a good Hammett plot (129).…”

Section: Aldehydesmentioning

confidence: 99%

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Organic Polarography

Wawzonek¹

1956

Anal. Chem.

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Section: Aldehydesmentioning

confidence: 99%

“…The polarographic method for ascaridol has been compared with the iodometric method (13), and that for peroxides in fats has been compared with the Wheeler iodide and the stannous chloride methods (338). In the latter comparison the polarographic method gave more reliable values because it was more specific.…”

Section: Peroxides and Hydroperoxidesmentioning

confidence: 99%

Organic Polarography

Wawzonek¹

1956

Anal. Chem.

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Ascaridole Studies: Part III. The Purification and Characterisation of Ascaridole

Beckett¹,

Donbrow²,

Jolliffe³

1955

Journal of Pharmacy and Pharmacology

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1 3 4 5 6 7 8 9 10 11 12 This Paper b.pt., O c. 84/3 mm. 96 to 97/8 mm. 80 to 81/4 mm. 85 to 95/2-5 mm. 113 to 1l4/20 mm. l l 5 j l S mm. -75/13 mm. 83 to 84/3 mm. 83/4-5 mm. 115/15 mm., 8415 mm. 3940/0.2 mm. m.pt., c. -n200 C.' * 0.00" Assay (per cent. v/w ascaridole, iodimetric method) 110.8Authors' values of n, !, -recalculated by applying a correction of -04004 per degree rise of temperature (see later) to enable comparison at 20' C. to be made.

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A Note on the Determination of Ascaridole in Oil of Chenopodium

Beckett¹,

Jolliffe²

1955

Journal of Pharmacy and Pharmacology

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IN a previous communication1 describing results in which specially purified ascaridole2 was used, it was pointed out that the factor used in the B.P. 1953 for the conversion of volume of titrant into a weight of ascaridole was incorrect, e.g., a sample of Oil of Chenopodium containing 54 per cent. wjw of ascaridole gave a result of 65 per cent. w/w by the B.P. method. Furthermore, because the amount of iodine liberated is not directly proportional to the weight of ascaridole, analysis of samples of low grade oils gave proportionately higher errors in the results than those obtained for high grade oils; an invariant factor is therefore inadequate.A quadratic expression was proposed, which, when applied to the observed measurements using the B.P. procedure, gave correct figures for the ascaridole content of the oils provided that the volumes of titrant were within a specified range. Unfortunately, the use of the expression is time-consuming. TABLE I

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Ascaridole Studies

Cited by 3 publications

References 4 publications

Organic Polarography

Organic Polarography

Ascaridole Studies: Part III. The Purification and Characterisation of Ascaridole

A Note on the Determination of Ascaridole in Oil of Chenopodium

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