Detection and determination of free sulfur in petroleum distillates

1932 ◽  
Vol 4 (4) ◽  
pp. 441-442 ◽  
Author(s):  
M. K. Thornton ◽  
J. E. Latta
Keyword(s):  
Petroleum Distillates ◽  
Free Sulfur

scholarly journals Determination of Free Sulfur in Extracted Acetone Solution

1957 ◽  
Vol 60 (6) ◽  
pp. 789-790
Author(s):  
Wasaburo Jono ◽  
Teizo Watanabe ◽  
Kannosuke Miyaji ◽  
Hideo Konishi
Keyword(s):  
Acetone Solution ◽  
Free Sulfur

Determination of Free Sulfur in Lubricating Oil

1942 ◽  
Vol 14 (2) ◽  
pp. 107-109 ◽  
Author(s):  
Harry Levin ◽  
Ervin Stehr
Keyword(s):  
Lubricating Oil ◽  
Free Sulfur

The Determination of Free Sulfur in Vulcanizates by a Polarographic Method

1952 ◽  
Vol 25 (1) ◽  
pp. 161-166 ◽  
Author(s):  
F. C. J. Poulton ◽  
L. Tarrant
Keyword(s):  
Quantitative Determination ◽  
Acetone Extract ◽  
Polarographic Method ◽  
The Common ◽  
Free Sulfur ◽  
Working Processes

Abstract The polarographic method offers a rapid and accurate means of determining the “true” free sulfur in vulcanizates. In the case of single estimations, the test takes approximately as long as the copper-spiral method, but for multiple or replicate testing it is much quicker. Since the determination is made directly on the acetone extract, it was necessary to examine at some length the possibility of interference from other ingredients of the extract. It is shown that most of the common accelerators and antioxidants are not likely to interfere, and promising methods of determining certain of these substances were revealed. Thus MBT, MBTS, TCA, A11, ONV, ZDC, TMT, TET, Ureka, and some of the Nonox series of antioxidants give regular Polarographic waves readily distinguishable from that of sulfur, and the development of working processes for their determination should not present any great difficulties. Other accelerators and antioxidants, notably ZIX, some Nonox antioxidants and Agerite White, while showing Polarographic activity, give poor curves in the pyridine electrolyte. No doubt in other base solutions the form of curve could be improved, and their quantitative determination would then follow.

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