Chemistry: physical processes – Physical processes – Crystallization
Patent
1981-01-23
1982-09-21
Richman, Barry
Chemistry: physical processes
Physical processes
Crystallization
23230R, 23230HC, G01N 3106, G01N 3326
Patent
active
043504965
ABSTRACT:
The relative aromatic activity of hydrocarbon compositions is determined by measuring and comparing the ability of the hydrocarbon compositions to be sorbed by a polymeric rubber matrix. The aromatic activity is useful in determining chemical, physical and/or biological activity of a hydrocarbon composition.
REFERENCES:
ASTM D-1017-51 (Reapproved 1968), "Standard Method of Test for Benzene and Toluene by Ultraviolet Spectrophometry".
ASTM D-875-64 (Reapproved 1968), "Calculation of Olefins and Aromatics in Petroleum Distallates from Bromine Number and Acid Absorption".
ASTM D-1019-68, "Olefinic Plus Aromatic Hydrocarbons in Petroleum Distillates".
ASTM D--2267-68, "Aromatics in Light Naphthas and Aviation Gasolines by Gas Chromatography.
ASTM D-1319-70, "Hydrocarbon Types in Liquid Petroleum Products by Fluorescent Indicator Adsorption".
ASTM D-471-72, "Change in Properties of Elastomeric Vulcanizates Resulting from Immersion in Liquids".
ASTM D-936-55 (Reapproved 1968), "Aromatic Hydrocarbons in Olefin-Free Gasolines by Silica Gel Adsorption".
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