To eliminate the use of N-Propyl Bromide in cleaning opereations
Date Run:
02/29/2016
Experiment Procedure:
Four cleaners and water were tested at room temperature on aluminum, brass, and stainless-steel coupons to evaluate how the soil Water Soluble Coolant was cleaned. Preweighed coupons were coated with the supplied water-soluble coolant using a handheld swab and weighed a second time to determine the amount of soil added. Each cleaner was put in a beaker and three coupons were immersed into the solution for 5 minutes. The coupons were then stood upright to sir dry for 15 minutes and then placed on a tray. There was no rinse. Once dry, final weights were measured and efficiency calculated for each coupon cleaned.
Trial Results:
Cleaner
Substrate
Initial Wt.
Final Wt.
% Removed
Fluosolv CX
Aluminum
21.5772
21.5739
100.00
Aluminum
21.5349
21.5378
99.10
Aluminum
21.6684
21.6696
99.45
Brass
69.4517
69.4550
98.95
Brass
69.6130
69.6169
98.75
Brass
69.5385
69.5414
98.87
Stainless
63.8961
63.9071
96.27
Stainless
63.8697
63.8800
96.00
Stainless
60.1002
60.1027
98.86
Fluosolv NC
Aluminum
21.1991
21.1999
99.58
Aluminum
21.0506
21.0582
96.38
Aluminum
21.1746
21.1748
99.89
Brass
49.5343
49.5343
100.00
Brass
69.3302
69.3311
99.54
Brass
69.4374
69.4378
99.83
Stainless
59.1227
59.1229
99.91
Stainless
59.5738
59.5769
98.45
Stainless
63.9180
63.9203
99.02
Honeywell PF
Aluminum
21.4827
21.4858
98.63
Aluminum
21.6229
21.6266
98.73
Aluminum
21.5751
21.5774
99.14
Brass
49.4182
49.4233
98.66
Brass
49.5324
49.5373
98.52
Brass
49.4790
49.4839
98.03
Stainless
58.9560
58.9729
94.72
Stainless
58.9477
58.9590
95.65
Stainless
61.8864
61.8946
96.47
Honeywell PF-2A
Aluminum
21.4982
21.4984
99.91
Aluminum
21.0955
21.0965
99.57
Aluminum
21.6888
21.6899
99.39
Brass
69.4463
69.4497
98.83
Brass
49.5428
49.5449
98.87
Brass
49.4977
49.4996
99.27
Stainless
59.5287
59.5315
98.84
Stainless
63.8418
63.8866
83.21
Stainless
63.8993
63.8914
100.00
Water
Aluminum
21.4546
21.4588
98.63
Aluminum
21.5363
21.5391
99.17
Aluminum
21.4912
21.4962
98.46
Brass
49.5400
49.5442
98.79
Brass
49.5310
49.5340
99.00
Brass
49.5260
49.5291
99.25
Stainless
60.9681
60.9729
98.60
Stainless
59.0497
59.0526
98.99
Stainless
62.9084
62.9395
87.19
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 five chemistries evaluated efficiently removed the water-soluble coolant from all three types of substrates. Although Solstice 2A quantitatively was the least efficient, there was more visible soil on the coupons cleaned with water. Water would be classified as the least efficient cleaner despite quantitative evidence. Interactions with stainless substrate removed less soil than other substrates. The most efficient cleaner would be the Fluosolv NC with 99.17% efficiency. All chemistries were successful cleaners.
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