Trial #4
To evaluate drop in replacement solvents for TCE in removing buffing compound.
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.
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
|
The eight products that removed over 60% of the contaminant will be used in the next trial using the second supplied contaminant.
No relation