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Trial #28

Trial #28

To evaluate the effectiveness of SB-27 (t-Butyl Acetate 70% (CAS No: 540-88-5) + Benzyl Alcohol 30% (CAS No: 100-51-6)) in removing different soils from stainless steel coupons with a heated ultrasonic cleaning method as a potential replacement of TCE.

2024

32

2

72

72

Coupon

0.00

Ultrasonics

Tatyanna Moreland Junior

Stainless Steel

Lubricating/Lapping Oils
Oil

None

Air dry

Gravimetric

Three stainless steel coupons were used for each cleaner and soil combination, making a total of fifteen coupons. The initial weights of each coupon were recorded. A thin layer of each contaminant was added to the bottom third of the coupon with a swab, and the dirty weights of each coupon were recorded. The coupons were then subjected to heated ultrasonics in the cleaner for 15 minutes at a temperature of 120 °F. After the coupons were cleaned, they were left to air dry overnight, and clean weights of each coupon were taken the following day.

Contaminant Initial weight of content Final weight of content Percent Content Removed Average Percent Removal
Mobil DTE Light Oil 0.0144 0.0048 66.67 66
0.0127 0.0049 61.42
0.0142 0.0043 69.72
Strawman Cutting Oil 0.0212 0.0046 78.30 74
0.016 0.0048 70
0.0171 0.0042 75.44
Lenox Synthetic Lubricant 0.0062 0.0007 88.71 75
0.0201 0.0052 74.13
0.0135 0.0052 61.48
Maintenance Soil 0.0147 0.0039 73.47 68
0.0178 0.0063 64.61
0.0124 0.0044 64.52
Drawell Thin Oil 0.0173 0.0067 61.27 67
0.0177 0.005 71.75
0.0143 0.0047 67.13

The cleaner was not able to remove any of the contaminants. The one coupon that had less than 0.01g of soil did well, which could mean that SB-27 can remove extremely thin coatings of soil.

No relation

Name Class Section
Document Evaluation #0 Evaluation 3
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