Test previously identified alternatives of Benzyl Alcohol, Anisole, Thiophene, and 1-methoxy-2-propanol in a cleaning application that matches actual in-situ cleaning done at the client's facility.
Date Run:
08/19/2025
Experiment Procedure:
15 stainless steel coupons were prepared for this experiment, with weights prior to soiling be taken and recorded. For soiling procedure each of the coupons were soiled with approximately 1/10 of a gram of cross-linker+polymer mixture, prepared in a 4:100 mixture. After soiling, the coupons were put into a laboratory convection oven and baked at 300 degrees Fahrenheit for 30 minutes. Following this, the coupons were allowed to cool to room temperature for 1 hour and then dirty weights were taken. The chosen solvents were then applied to a cotton rag and the coupons were vigorously manually wiped for 30 seconds each with the chosen solvent. These were then allowed time to air dry overnight before final weights were taken.
Trial Results:
Solvent
Coupon #
Initial wt.
Cont. wt
Clean wt.
Initial wt of cont.
Final wt of cont.
%Cont Removed
Avg% removal by solvent
Methyl Ethyl Ketone
12
60.7306
60.8434
60.7383
0.1128
0.0077
93.17
84.59
17
60.4121
60.5171
60.4257
0.1050
0.0136
87.05
36
60.9888
61.1045
61.0194
0.1157
0.0306
73.55
Thiophene
33
60.7854
60.8734
60.7973
0.0880
0.0119
86.48
87.45
1
60.6177
60.7234
60.6272
0.1057
0.0095
91.01
28
60.7652
60.8688
60.7809
0.1036
0.0157
84.85
Anisole
21
61.0115
61.1092
61.0281
0.0977
0.0166
83.01
76.76
2
60.9375
61.0308
60.9687
0.0933
0.0312
66.56
13
60.6042
60.6706
60.6170
0.0664
0.0128
80.72
1-methoxy-2-propanol
29
60.9335
61.0272
60.9813
0.0937
0.0478
48.99
38.21
5
61.0058
61.1173
61.0801
0.1115
0.0743
33.36
32
60.9818
61.0896
61.0548
0.1078
0.0730
32.28
benzyl alcohol
20
61.0607
61.1907
61.1373
0.1300
0.0766
41.08
40.33
8
60.9664
61.0739
61.0316
0.1075
0.0652
39.35
7
60.8798
60.9915
60.9462
0.1117
0.0664
40.56
Success Rating:
Preliminary compatibility tests on substrate coupons encouraging for at least one cleaning chemistry. More in-depth laboratory testing necessary.
Conclusion:
Based on the results of this test, Thiophene proved to be very effective at removing the client's soil from the stainless steel coupons averaging 87.45% removal. This was closely followed in effectiveness by Methyl Ethyl Ketone with an average removal of 84.59%. Third most effective was Anisole with 76.76% average removal. Neither 1-methoxy-2-propanol or Benzyl Alcohol were considered effective in this cleaning application.
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