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Original Articles

Analysis of Commercial Zinc Di(alkylphenyl)dithiophosphate Additive

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Pages 426-430 | Published online: 25 Mar 2008

REFERENCES

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  • Wystrach , V P. , Hook , E O. , and Christopher , G L. M. , “ Basic Zinc Double Salts of O,O-Dialkyl Phosphorodithioic Acids ,” J. Org. Chem. , 21 , pp 705 – 707 ( 1956 ).
  • Wystrach , V P. , Hook , D O. , Hook , E O. , and Christopher , G L. , “Basic Zinc Dialkyl Dithiophosphates and Methods of Making the Same,” U.S. Patent 2 794 780 (June 4, 1957 ).
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  • Willermet , P A. , Mahoney , L R. , and Bishop , C M. , “ Lubricant Degradation and Wear II. Antioxidant Capacity and IR-Spectra in Systems Containing Zinc Dialkyldithiophosphates , ASLE Trans. 23 , 3 , pp 217 – 224 ( 1980 ).
  • Wittmann , Zs. , “ Direct Determination of Calcium, Magnesium and Zinc in Lubricating Oils and Additives by Atomic-absorption Spectrometry Using a Mixed Solvent System ,” Analyst , 104 , pp 156 – 160 ( 1979 ).
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  • ASTM D 2503-67. (Reapproved 1977 ) Molecular Weight of Hydrocarbons by Thermoelectric Measurement of Vapor Pressure, 1981 Annual Book of ASTM Standards part 24 , Amer. Soc. for Testing and Materials.

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