Corrosion of Paint
205
TabLE 7.4
Characteristics of Solvent Classes
Class
Solvent Name
Strength/
Solvency
Polarity
Specific
Gravity
Boiling
Range
(°F)
Flash
Point of
TCC
Evaporation
Rate a
Aliphatic
VM &
Ρ naphtha
Low (32 KB) b
Nonpolar
0.74
246–278
52
24.5
Mineral spirits
Low (28 KB)
Nonpolar
0.76
351–395
128
9.0
Aromatic
Toluene
High (105 KB) c
Intermediate
0.87
230–233
45
4.5
Xylene
High (95 KB)
Intermediate
0.87
280–288
80
9.5
High solvency
High (90 KB)
Intermediate
0.87
360–400
140
11.6
Ketone
Methyl ethyl ketone (MEK) Strong
High
0.81
172–176
24
2.7
Methyl isobutyl ketone
(MIBK)
Strong
High
0.80
252–266
67
9.4
Cyclohexanone
Strong
High
0.95
313–316
112
4.1
Ester
Ethyl acetate
Intermediate
Intermediate
0.90
168–172
26
2.7
Alcohol
Ethanol
Weak
Intermediate
0.79
167–178
50
6.8
Unsaturated aromatic Styrene
Strong
Intermediate
0.90
Glycol ethers
Cellosolve
Strong
High
0.93
273–277
110
0.3
Butyl cellosolve
Strong
High
0.90
336–343
137
0.06
a
Butyl acetate equals 1.
b
KB, Kauri-Butanol, a measure of solvent power of petroleum thinners (milliliters of thinner required to produce cloudiness when added to 20
g of a solution of karigum in butyl alcohol).
c
TCC-TAE closed cup.
Source:
Schweitzer, Philip A., 2006, Paints and Coatings,
Boca Raton, FL: Taylor & Francis, p. 94.