To evaluate the effectiveness of SB-33 (a D limonene and Dimethyl Glutarate mixture) and SB-10 (a t-butyl acetate and Benzyl benzoate mixture) in removing several production oils and greases from stainless steel coupons as a potential replacement for TCE unheated immersion cleaning method.
Date Run:
04/26/2023
Experiment Procedure:
Three stainless steel coupons were used for each of the five soils being tested for a total of 15 coupons. The initial weights of each coupon were recorded. The bottom third of every coupon was soiled by applying the corresponding soil with a swab. The dirty weights of each coupon were then recorded. The coupons were then subjected heated immersion in SB-33 and SB-10 with the stir bar at 200rpm for 15 mins at 130F. After the coupons were cleaned, they dried with a heat gun for about 2 minutes each. The next morning, the clean weights of each coupon were taken
Soil
Use
CAS
Milform OAK 7a International
Stamping and drawing fluid
64742-53-6 / 68909-65-9
M4
Milform Oak 15c
Metalworking oil
64742-52-5 / 64742-53-6
Milform Oak 15a
Metalworking oil
64742-44-5 / 64742-52-5 / 64742-55-8
Milform Oak 529
Evaporative lubricant
68551-17-7 / 123-95-5 / 127087-87-0
Trial Results:
Cleaner
Soil
Initial wt of cont.
Final wt of cont.
%Cont Removed
% AVG
% Overall
SB-33
Oak 7a international
0.0390
0.0013
96.67
93.49
84.64
0.0876
0.0107
87.79
0.0677
0.0027
96.01
M4
0.3285
0.0090
97.26
98.29
0.2656
0.0027
98.98
0.4822
0.0066
98.63
Oak 15c
0.0467
0.0019
95.93
97.40
0.1117
0.0016
98.57
0.1748
0.0040
97.71
Oak 15a
0.0890
0.0014
98.43
98.27
0.1177
0.0010
99.15
0.1116
0.0031
97.22
Oak 529
0.0071
0.0043
39.44
34.81
0.0059
0.0035
40.68
0.0037
0.0028
24.32
SB-10
Oak 7a international
0.0424
0.0063
85.14
94.45
93.47
0.0804
0.0011
98.63
0.0699
0.0003
99.57
M4
0.3605
0.0006
99.83
98.63
0.2962
0.0022
99.26
0.3696
0.0118
96.81
Oak 15c
0.0721
0.0069
90.43
87.30
0.1227
0.0162
86.80
0.1155
0.0177
84.68
Oak 15a
0.1725
0.0085
95.07
94.56
0.1763
0.0106
93.99
0.1891
0.0102
94.61
Oak 529
0.0090
0.0006
93.33
91.41
0.0076
0.0012
84.21
0.0303
0.0010
96.70
Success Rating:
Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.
Conclusion:
SB-33 is an effective alternative to TCE in removing all soils except for M4 using heated immersion. SB-10 is an effective alternative to TCE in removing all soils using heated immersion
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