Determining the HSP sphere for Boeing's soils:
Phillips 66 Multiplex FS 220 #2
Date Run:
08/25/2026
Experiment Procedure:
Twenty-four scintillation vials were filled with 24 different solvents from TURI's HSP matrix. A small sample of the grease soil was put into each of the 24 vials, where the soil made up about 1% of the total contents of each vial. For the first hour, visual observations were taken every 10 minutes, then following the first hour observations were taken every half hour up until 3 hours. The vials were then allowed to sit overnight before final observations were taken. A "0" denotes that less than 90% of the target soil was dissolved. While a rating of "1" denotes greater than 90% dissolution of the target soil.
Trial Results:
Solvent
Final Disolution
Toluene
0
Dimethyl Carbonate
0
Xylenes
0
Benzyl Alcohol
0
Ethylene Glycol
0
Methyl Acetate
0
Undecane
0
Ethyl Lactate
0
Acetone
0
Ethyl Acetate
0
Methanol
0
Ethanol
0
1,3-Dioxolane
0
Diethyl Carbonate
0
1-Propanol
0
Isopropanol
0
Propylene Carbonate
0
Thiophene
0
1-Methoxy-2-Propanol
0
Dimethyl Sulfoxide
0
1-Butanol
0
Dimethyl Glutarate
0
Anisole
0
2-Butoxyethyl-Acetate
0
Success Rating:
Preliminary compatibility tests on substrate coupons encouraging for at least one cleaning chemistry. More in-depth laboratory testing necessary.
Conclusion:
None of the 24 solvents were able to dissolve the soil to the required level within the observation period. Because of this, a sphere was not able to be generated and the HSP values of the soil remain unknown.
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