To find cleaner that can dissolve adhesive for replacement of Methylene Chloride.
Date Run:
05/07/1999
Experiment Procedure:
Small sections of the contaminant (~0.5g) were placed into 40 mL vials. Each vial was filled with a cleaning solution selected based on past performance with similar contaminant make-up. Cleaners were selected using the Lab’s Effective Tests Conditions database and from vendor supplied information. Full strength solutions (except one) were used at room temperature. Observations were made at five intervals over three days both visual and by tactile methods.
SUBSTRATE MATERIAL: None CONTAMINANTS: Ashland Chemical Co Aroset 601 (CAS#s: 141-78-6, 67-63-0, 108-88-3, 103-11-7, 141-32-2)
Trial Results:
Three cleaners showed goods signs of being able to dissolve the contaminant. Most of the cleaners had some effect on the adhesive, reducing the stickiness after an hour of soaking. Table 1 lists the observations made for each cleaner at the five-time intervals.
Table 1. Visual and Tactile Observations
Time (min)
1
2
3
4
5
6
7
5
No change
No Change
No Change
No Change
No Change
Floating
No Change
30
Floating
On Bottom
On Bottom
On Bottom
Floating
No Change
Light Yellow
60
Less Sticky
Mushy
Less Sticky
Mushy
No Change
Mushy
Mushy-not sticky
120
No Change
More Mushy
No Change
More Mushy
Slightly Mushy
Mushy
No Change
4320
Cloudy
Very Mushy
Some Cloudiness
Very Mushy
No Change
No Change
Very Mushy
Success Rating:
Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.
Conclusion:
Envirosoluitons Solsafe 245, AG Environmental Soy Gold 2000 and Savogran SI No 4 were all effective in dissolving the adhesive after three days of soaking. All three did show signs of dissolving the adhesive after an hour of soaking at room temperature.
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