Trial #1
Compare selected cleaners to current cleaner
The 3 oils were selected in order to match the contaminants encountered by the client. Table 1 list CAS #s of the 3 oils and compares them to the client oils.
Table 1 CAS#’s of Selected Oils.
| NAME
|
CAS #
|
GEAR OIL
|
TRACTOR
|
MOTOR
|
| Citgo Sliderite 220
|
64742-52-5
|
|
|
|
|
|
64742-01-4
|
X
|
|
|
|
|
64742-62-7
|
X
|
|
|
| Citgo Cutting
|
64741-89-5
|
|
X
|
|
| Oil 120
|
64742-65-0
|
|
X
|
|
| Citgo Cutting
|
64742-65-0
|
|
X
|
|
| Oil 425
|
64741-88-4
|
X
|
X
|
X
|
|
|
64741-89-5
|
|
X
|
|
|
|
64742-54-7
|
|
X
|
X
|
Each oil was applied to pre-weighed aluminum coupon. The coupons were placed in an oven for 20 minutes at 160 F. Coupons were allowed to cool to room temperature and weighed again. Three coupons were placed in each cleaner for two minutes with stir bar agitation at room temperature. Coupons were then rinsed in tap water for 30 seconds also at room temperature. Parts air dried and then weighed one more time.
SUBSTRATE MATERIAL: Al-202-6061 T-4
CONTAMINANTS: Citgo Cutting Oils 425 & 120, Sliderite 220
CONTAMINATING PROCESS USED: Applied the oils using a swab.
Three products had a cleaning efficiency above 90%. One was the current cleaner Zep and the other two were SolSafe 245 and Super-Neutral pH. Table 2 lists the individual coupon efficiencies as well as the average for the cleaner.
TABLE 2 Cleaner Efficiencies
| CLEANERS
|
ZEP
|
BioChem
|
SupNeut
|
Soy Gold
|
282
|
232
|
D-Greeze
|
| Coupon 1
|
98.1
|
98.4
|
88.4
|
83.3
|
56.9
|
41.4
|
84.2
|
| Coupon 2
|
96.9
|
97.5
|
87.9
|
83
|
82.1
|
35.6
|
66
|
| Coupon 3
|
98.3
|
93
|
95.8
|
85.3
|
49.5
|
58.5
|
80.9
|
| Average
|
97.8
|
96.3
|
90.7
|
83.9
|
62.8
|
45.2
|
77
|
| Std Dev
|
0.757
|
2.89
|
4.42
|
1.25
|
17.1
|
11.9
|
9.7
|
There are three products that may work better when heated: Super-Neutral, Daraclean 232 & 282.
Two products may work as well as the current cleaner in cleaning automotive parts: BioChem SolSafe 245 and Safety CleanUp Super Neutral pH. The next test will use the three aqueous products. The only variation in the cleaning will be to heat the coupons to 130 F.
No relation