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Toxics Use Reduction Institute · Surface Solutions Laboratory
 
Toxics Use Reduction Institute




Surface Solutions Laboratory

Trial Report



Trial Number 3

(Client Number 220, Project Number 1)

Trial Purpose: To evaluate products on fourth supplied soil.

Date Run: 04/20/04

Experiment Procedure:
Six 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.
Eighteen preweighed aluminum coupons were coated with the C.P. Hall Co. Plasthall ESO oil (8013-07-8) 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 allowed to sit for 10 minutes for drying at room temperature. The coupons were weighed a final time and efficiencies were calculated.

Trial Results
Five minutes of cleaning did not appear to provide enough cleaning time for this oil. Three products removed over 80% but less than 85% of the soil in
five minutes. Two products (HFE 7100 & 7200) removed under 60%. The table shows the amount of soil added, the amount remaining and the efficiency for
each coupon cleaned.

Cleaner             Initial wt       Final wt     % Removed
HFE 7100         0.0913         0.0638         30.12
                         0.2101         0.0712         66.11
                         0.1712         0.0689         59.75
HFE 7200         0.2600         0.0776         70.15
                         0.2033         0.1045         48.60
                         0.1624         0.0690         57.51
HFE 71DE        0.2856         0.0366         87.18
                         0.1735         0.0442         74.52
                         0.2198         0.0440         79.98
AK 225             0.1733         0.0431         75.13
                         0.2422         0.0176         92.73
                         0.1711         0.0255         85.10
Vertrel CCA       0.2271         0.0516         77.28
                         0.3007         0.0356         88.16
                         0.2999         0.0318         89.40
Vertrel MCA      0.2571         0.0629         75.53
                         0.2051         0.0472         76.99
                         0.1928         0.0526         72.72


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

Conclusion
Follow up tests will be conducted for all four contaminants using longer times. An attempt will be made to clean using vapor degreasing.