To test the efficacy of the Dowclene 1601 Modified Alcohol in removing various industrial soils using vacuum vapor degreasing. To create a matrix of all soils from past TCE projects.
Date Run:
08/04/2026
Experiment Procedure:
Prep:
Coupons were created from aluminum foil and were analyzed using the cleanospector to measure their initial reflectance values. Reflectance value data points were taken in five unique areas of the surface of each coupon. The average of the five data points were recorded as the initial reflectance of each coupon. The coupons were then soiled with a pea sized amount of various soils by spreading the soil evenly across the surface using a cotton swab. The same process of determining the reflectance value was repeated and each coupon's dirty reflectance value was recorded.
Cleaning:
The benchtop vacuum vapor degreaser was utilized with the Dowclene 1601 Modified Alcohol to clean each coupon for 10 minutes within the cleaning chamber. Once each coupon was removed, they were allowed to air dry for about 1 minute before taking clean reflectance value measurements.
Rotation= 60 rpm
T condenser= 0C
T vap= 20C
Analysis:
The recorded reflectance values of each coupon were used within an equation to generate a percentage representative of how close the clean reflectance value is to the initial reflectance value. It estimates how closely the coupons were returned to their original state after vacuum vapor degreasing. The equation is as follows
%=(Rclean-Rdirty/Rinitial-Rdirty)X100
Trial Results:
Soil
Solvent
Temp
Initial
Dirty
Clean
% DET
Observations
Phillips 66 Multiplex Grease
Dowclene 1601
120C
2.8
2750
3.3
99.98%
grease not soluble in liquid, particles in test environment, cleans well
Aeroshell 33 Grrease
Dowclene 1601
120C
2.7
85.2
21.8
76.85%
remaining grease turned from green toy ellow
Hocut 795 Machining Oil
Dowclene 1601
120C
2.7
1592.4
29.2
98.33%
Hocut 795 Machining Oil
Dowclene 1601
130C
3.4
1133.2
4.8
99.88%
w/ sample recirculation
No Soil
Dowclene 1601
120C
2.7
N/A
2.8
N/A
Success Rating:
Results successful using TACT (time, agitation, concentration, and temperature, as well as rinsing and drying) and/or other cleaning chemistries examined.
Conclusion:
The Dowclene 1601 was succesful in removing all soils utilizing benchtop vapor degreasing.
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