To evaluate drop in replacement solvents for TCE in removing buffing compound.
Date Run:
08/23/2004
Experiment Procedure:
Sixteen products were selected from the laboratory's database of test results based on client specific information. Each product was used at full strength in 250 ml beakers at room temperature.
Forty-eight preweighed CDA260 Brass coupons were coated with the Matchless Metal Polishing Company K55-278 Liquid Tripoli Buffing compound (1317-85-8) using a hand held swab. Coupons were allowed to sit overnight and weighed a second time to determine the amount of soil added to each coupon. Three coupons were cleaned in each product for 5 minutes with no agitation. Coupons were air dried at room temperature. Once coupons were dry, final weights were recorded and efficiencies were calculated.
Trial Results:
Four of the sixteen products removed over 75% of the buffing compound in the five minutes of room temperature soaking. Another four removed over 63% and three removed over 55% of the buffing compound. The table lists the amount of soil added, the amount remaining and the efficiency for each coupon cleaned.
Cleaner
Initial wt
Final wt
% Removed
AK 225
0.6983
0.6266
10.27
0.2376
0.1905
19.82
0.3403
0.2727
19.86
CCA
0.2445
0.1164
52.39
0.2430
0.1090
55.14
0.2668
0.1052
60.57
MCA
0.3134
0.1474
52.97
0.3613
0.1695
53.09
0.2837
0.0826
70.88
Heavy Duty C
0.3338
0.1694
49.25
0.2587
0.1341
48.16
0.3803
0.2097
44.86
Flux Remover C
0.2879
0.0968
66.38
0.4980
0.2324
53.33
0.2381
0.0706
70.35
HFE 7100
0.2726
0.2687
1.43
0.3541
0.3350
5.39
0.3045
0.2972
2.40
HFE 71DE
0.4460
0.2445
45.18
0.3428
0.1255
63.39
0.2119
0.0631
70.22
HFE 7200
0.4060
0.3934
3.10
0.5930
0.5733
3.32
0.3123
0.3079
1.41
Ensolv
0.3454
0.0899
73.97
0.2464
0.0545
77.88
0.3096
0.0672
78.29
Ensolv A
0.4083
0.1541
62.26
0.4395
0.1330
69.74
0.4287
0.1461
65.92
Lenium CP
0.1554
0.0954
38.61
0.3560
0.2557
28.17
0.2719
0.1328
51.16
Lenium ES
0.3629
0.0566
84.40
0.2583
0.0308
88.08
0.2802
0.0471
83.19
Lenium GS
0.2393
0.0342
85.71
0.4664
0.1420
69.55
0.4294
0.2016
53.05
Metalnox M6960
0.3864
0.1070
72.31
0.3407
0.0487
85.71
0.3839
0.0616
83.95
Solvon PB
0.4200
0.1062
74.71
0.2570
0.0648
74.79
0.2187
0.0282
87.11
Solvon IP
0.3878
0.1355
65.06
0.6035
0.2438
59.60
0.4632
0.1589
65.70
Success Rating:
Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.
Conclusion:
The eight products that removed over 60% of the contaminant will be used in the next trial using the second supplied contaminant.
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