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Trial Number 1

Trial Purpose:

To evaluate alternatives on second supplied contaminant

Date Run:

05/04/2004

Experiment Procedure:

Nine 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. Twenty-seven preweighed silver plated copper coupons were coated with the Houghton Chemical Cut-Max 135 (64742-52-5, 64741-96-4) 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:

All nine products removed over 85% of the oil. The table lists the amount of soil added, the amount remaining  and the efficiency for each coupon cleaned.

Cleaner Initial wt Final wt % Removed
HFE 7100  0.1504  0.0230 84.71
   0.2870  0.0185 93.55
   0.1815  0.0127 93.00
HFE 7200  0.1089  0.0119 89.07
   0.1725  0.0155 91.01
   0.1083  0.0148 86.33
AK 225  0.1085  0.0034 96.87
   0.3010  0.0018 99.40
   0.1515  0.0019 98.75
Vertrel CCA  0.0935  0.0072 92.30
   0.0866  0.0091 89.49
   0.0779  0.0098 87.42
Ensolv  0.1190  0.0019 98.40
   0.1042  0.0022 97.89
   0.0844  0.0023 97.27
Ensolv A  0.1239  0.0012 99.03
   0.1457  0.0006 99.59
   0.2006  0.0008 99.60
Metalnox M6760  0.0505 -0.0003 100.59
   0.1837 -0.0010 100.54
   0.1136  0.0004 99.65
Solvon PB  0.1417 -0.0012 100.85
   0.0547 -0.0003 100.55
   0.0754 -0.0008 101.06
Solvon IP  0.1124  0.0002 99.82
   0.0822  0.0003 99.64
  0.1167 0.0000 100.00

Success Rating:

Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.

Conclusion:

All nine products will be tested on the third supplied contaminant.

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