Abstract
Simple and accurate titrimetric methods for the determination of thioacetamide and thiobenzamide in partially aqueous media have been developed, based on their stoicheiometric oxidation with dichloramine-T (DCT) at room temperature. The direct titration of the thioamide with DCT involves a two-electron change, giving a carboxylic acid, ammonia and sulphur as oxidation products with p-toluenesulphonamide as the reduction product of DCT. A back-titration procedure involving the oxidation of thioacetamide to acetic acid, ammonium sulphate and sulphur by excess of DCT with a five-electron change has also been developed. The methods described are simple, rapid, reproducible and accurate. The reaction products have been identified by thin-layer and paper chromatography and colour tests.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 873-876 |
| Number of pages | 4 |
| Journal | The Analyst |
| Volume | 105 |
| Issue number | 1254 |
| State | Published - 1980 |
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Keywords
- Dichloramine-T
- Oxidimetric titrations
- Thioamide determination
ASJC Scopus subject areas
- Analytical Chemistry
Cite this
Determination of thioacetamide and thiobenzamide using dichloramine-T. / Ramanujam, V-M; Made Gowda, Netkal M.; Trieff, Norman M.
In: The Analyst, Vol. 105, No. 1254, 1980, p. 873-876.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Determination of thioacetamide and thiobenzamide using dichloramine-T
AU - Ramanujam, V-M
AU - Made Gowda, Netkal M.
AU - Trieff, Norman M.
PY - 1980
Y1 - 1980
N2 - Simple and accurate titrimetric methods for the determination of thioacetamide and thiobenzamide in partially aqueous media have been developed, based on their stoicheiometric oxidation with dichloramine-T (DCT) at room temperature. The direct titration of the thioamide with DCT involves a two-electron change, giving a carboxylic acid, ammonia and sulphur as oxidation products with p-toluenesulphonamide as the reduction product of DCT. A back-titration procedure involving the oxidation of thioacetamide to acetic acid, ammonium sulphate and sulphur by excess of DCT with a five-electron change has also been developed. The methods described are simple, rapid, reproducible and accurate. The reaction products have been identified by thin-layer and paper chromatography and colour tests.
AB - Simple and accurate titrimetric methods for the determination of thioacetamide and thiobenzamide in partially aqueous media have been developed, based on their stoicheiometric oxidation with dichloramine-T (DCT) at room temperature. The direct titration of the thioamide with DCT involves a two-electron change, giving a carboxylic acid, ammonia and sulphur as oxidation products with p-toluenesulphonamide as the reduction product of DCT. A back-titration procedure involving the oxidation of thioacetamide to acetic acid, ammonium sulphate and sulphur by excess of DCT with a five-electron change has also been developed. The methods described are simple, rapid, reproducible and accurate. The reaction products have been identified by thin-layer and paper chromatography and colour tests.
KW - Dichloramine-T
KW - Oxidimetric titrations
KW - Thioamide determination
UR - http://www.scopus.com/inward/record.url?scp=37049097130&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=37049097130&partnerID=8YFLogxK
M3 - Article
VL - 105
SP - 873
EP - 876
JO - The Analyst
JF - The Analyst
SN - 0003-2654
IS - 1254
ER -