ASTM D 1308: Effect of Household Chemicals on Clear and Pigmented Organic Finishes.
This test describes the "spot test” or "watch glass” method to simulate exposure of the coating through possible spillage. Each chemical was in contact with the elastomer system for a period of seven days, except where noted. Visual observations were made on the elastomer daily and additional chemical was added as needed. The tested area was covered with a watch glass to inhibit evaporation and or contamination of the chemicals. Chemicals used as well as results can be found in Table 1.

 

 

Acetone
Brake fluid
CLOROX→
Dimethyl Formamide
Gasoline, unleaded
Hexane
Hot tub water2
Hydraulic oil
JEFFAMINE→ D-400
Methanol
5% Methanol/gasoline
Motor oil
Propylene carbonate
Sodium hydroxide,
5%
10%
25%
50%
Sulfuric acid
5%
10%
50%
conc.
Vinegar, 5% acetic acid
Water

 

 

 

Aromatic
A
B
NR1
NR
A
A
B
A
NR
A
A
B1

C
A
A
A
B1

 

 

A
C
A
NR
A
A
A
C
NR
C
C
B1

C
A
A
A
B1

B
B
NR
NR3
B
A

Code describing chemical's effect on elastomer:
A - No visible damage
B - Little visible damage
C - Some effect - swelling, discoloration, cracking
NR - Not recommeneded

1 Some discoloration only
2 Brominated water
3 Less than 24 hour exposure

This test method describes the immersion method of exposure for a coating system to chemicals. In this testing procedure, a black pigmented aromatic polyurea spray elastomer system was used. This system was spray-applied to 2 mil blast profile steel panels, giving total encapsulation. These coated panels were then immersed halfway into individual chemicals for a period of 1 year at 25��, except where noted. The panels were then removed and inspected. Chemicals used as well as results can be found in Table 2.