To identify alternative to TCE in vapor degreasing operation. Evaluation of products on first soil
Date Run:
05/03/2004
Experiment Procedure:
Ten products were selected based on client request for vapor degreasing solvents. Each product was used at full strength in a 250 ml beaker and heated to 96 F on a hot plate. Thirty preweighed silver plated copper coupons were coated with the Exxon Mobil Vacmul 03D (94741-44-2) using a hand held swab. Coupons were weighed a second time to determine the amount of soil added to each coupon. Three coupons were cleaned in each solution for 5 minutes using stir-bar agitation. After cleaning parts were weighed a final time and efficiencies were calculated.
Trial Results:
Seven of the ten products removed over 89% of the soil within five minutes using immersion cleaning. Two products, Flux Remover C and Heavy Duty Degreaser C, removed less than 60% and Vertrel MCA removed just under 80%. The table below lists the amount of soil added, the amount remaining after cleaning and efficiencies for each coupon cleaned.
Cleaner
Initial wt
Final wt
% Removed
HFE 7100
0.0283
0.0018
93.64
0.0906
0.0078
91.39
0.0960
0.0044
95.42
HFE 7200
0.0445
0.0053
88.09
0.0455
0.0051
88.79
0.0679
0.0063
90.72
AK 225
0.0926
0.0038
95.90
0.0799
0.0025
96.87
0.0497
0.0023
95.37
Vertrel CCA
0.0955
0.0031
96.75
0.1159
0.0016
98.62
0.0858
0.0017
98.02
Vertrel MCA
0.0581
0.0146
74.87
0.0563
0.0177
68.56
0.1140
0.0097
91.49
Flux Remover C
0.0530
0.0320
39.62
0.1081
0.0695
35.71
0.0773
0.0557
27.94
Heavy Duty Degreaser C
0.1056
0.0120
88.64
0.0707
0.0330
53.32
0.0556
0.0374
32.73
Ensolv
0.0592
0.0030
94.93
0.1291
0.0034
97.37
0.0804
0.0024
97.01
Ensolv A
0.1173
0.0025
97.87
0.1112
0.0026
97.66
0.0558
0.0026
95.34
Metalnox M6760
0.0838
0.0022
97.37
0.0582
0.0027
95.36
0.0851
0.0029
96.59
Success Rating:
Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.
Conclusion:
The seven successful products will be used on the second supplied oil under the same conditions.
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