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To identify alternative to TCE in vapor degreasing operation. Evaluation of products on first soil
Ten 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. Thirty preweighed silver plated copper coupons were coated with the Exxon Mobil Vacmul 03D (94741-44-2) 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.
Seven of the ten products removed over 89% of the soil within five minutes using immersion cleaning. Two products, Flux Remover C and Heavy Duty Degreaser C, removed less than 60% and Vertrel MCA removed just under 80%. The table below lists the amount of soil added, the amount remaining after cleaning and efficiencies for each coupon cleaned.
|Cleaner||Initial wt||Final wt||% Removed|
|Flux Remover C||0.0530||0.0320||39.62|
|Heavy Duty Degreaser C||0.1056||0.0120||88.64|
Success Rating:Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.
The seven successful products will be used on the second supplied oil under the same conditions.