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68740

SPECTROPHOTOMETRIC DETERMINATION OF SOME AROMATIC DIAMINES USING SODIUM SULPHIDE AND AN OXIDANT

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Last updated: 25 Dec 2024

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Abstract

A simple and selective colorimetric method was developed for quantitative determination of aromatic diamines; p-phenylenediamine, N,N-dimethyl p-phenylenediamine and N,N-diethyl-p-phenylenediamine. The method is based on the reaction of sodium sulphide with an aqueous solution of the diamine in presence of an oxidant at ambient temperature to form a methylene blue or ethylene blue like dyes. Absorption maxima of 597, 665 and 670 nm were obtained for the three compounds; respectively. Different oxidizing agents were tried e.g. Ce(IV), Fe(III) and N-bromo-succinimide (NBS). The color was developed within 5 minutes and remained stable for at least 24 hours. Linear calibration graphs with very small intercepts were obtained. The proposed method was applied successfully for determination of aromatic diamines in spiked water samples and in presence of other aromatic amines and excellent recoveries were obtained. Reaction products have been isolated and identified using microanalysis, UV and IR spectrometric methods.

DOI

10.21608/bfsa.1997.68740

Authors

First Name

Fardos

Last Name

Mohamed

MiddleName

A.

Affiliation

Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Assiut University, Assiut, Egypt

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First Name

Mohamed

Last Name

Abdalla

MiddleName

A.

Affiliation

Department of Chemistry, Faculty of Science, King Saud University, Riyadh Saudia Arabia

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City

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Orcid

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First Name

Soad

Last Name

Shammat

MiddleName

M.

Affiliation

Department of Chemistry, Faculty of Science, King Saud University, Riyadh Saudia Arabia

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Orcid

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Volume

20

Article Issue

1

Related Issue

10407

Issue Date

1997-06-01

Receive Date

1996-10-05

Publish Date

1997-06-30

Page Start

67

Page End

74

Print ISSN

1110-0052

Online ISSN

3009-7703

Article File

BFSA_Volume 20_Issue 1_Pages 67-74.pdf

PDF . 435.4kB

Link

https://bpsa.journals.ekb.eg/article_68740.html

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https://bpsa.journals.ekb.eg/service?article_code=68740

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Original Article

Type Code

1,096

Publication Type

Journal

Publication Title

Bulletin of Pharmaceutical Sciences Assiut University

Publication Link

https://bpsa.journals.ekb.eg/

MainTitle

SPECTROPHOTOMETRIC DETERMINATION OF SOME AROMATIC DIAMINES USING SODIUM SULPHIDE AND AN OXIDANT

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Article

Created At

22 Jan 2023