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Trial #16

Trial #16

To evaluate the effectiveness of SB-27 (t-Butyl Acetate 70% (CAS No: 540-88-5) + Benzyl Alcohol 30% (CAS No: 100-51-6)) and SB-31 (Benzyl Alcohol 63% (CAS No: 100-51-6) + Ethyl Lactate 37% (CAS No: 97-64-3)) in removing Oak 529 oil from stainless steel, aluminum, and steel coupons as a potential replacement for TCE with an unheated ultrasonic cleaning method.

2023

31

1

43

43

Coupon

11/30/2023

15.00

Ultrasonics

Tatyanna Moreland Junior

Aluminum
Stainless Steel
Steel

Oil

None

Air dry

Gravimetric

Nine brass coupons were used for each cleaner being tested, for a total of 18 coupons. The initial weights of each coupon were recorded. The bottom third of every coupon was soiled by applying the soil with a swab. The dirty weights of each coupon were then recorded. The coupons were then subjected to unheated ultrasonic in SB-27 and SB-31 for 15 minutes. After the coupons were cleaned, they were left to air dry overnight. The next morning, the clean weights of each coupon were taken.

Cleaner Substrate Initial content weight Final content weight Percent content removed Average percent removed
SB-27 Stainless Steel 0.0262 -0.0067 125.57 106.35
  -0.0019 113.87
0.0265 0.0054 79.62
Aluminum 0.0346 0.0004 98.84 93.76
0.0232 -0.0074 131.90
0.019 0.0094 50.53
Steel 0.0106 0.0016 84.91 81.07
0.0134 0.0054 59.70
0.0071 0.0001 98.59
SB-31 Stainless Steel 0.0176 -0.0009 105.11 89.50
0.0226 0.0006 97.35
0.0212 0.0072 66.04
Aluminum 0.0670 0.0451 32.69 -9.28
0.0389 0.0063 83.80
0.0088 0.0215 -144.32
Steel 0.0248 0.0368 -48.39 -41.08
0.0418 0.0289 30.86
0.0298 0.0613 -105.70

There was a large amount of variation in how the cleaners and substrates interacted. SB-27 seemed to clean really well, while the coupons cleaned with SB-31 never dried overnight. Further testing would be needed to examine if these cleaners can be a suitable replacement for TCE.

No relation

Name Class Section
Document Evaluation #0 Evaluation 3
Document Evaluation #1 Evaluation 3
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