S = Satisfactorio; M = Marginal; U = No Satisfactorio

Reagent (Solids in saturated
solution unless indicated otherwise)
Exposure
Temp ºC
Time,
Days
Chemical
Exposure
Perfomance
Machine oil
23
S
Magenta dye (2% soln.)
60
S
Magnesium chloride
23
S
Magnesium carbonate
100
S
Magnesium hydroxide
100
S
Magnesium sulphate
100
S
Magnesium sulphide
100
S
Malic acid
23
S
Manganese salts
23
S
Margarine
20
S
60
S
Mayonnaise
23
S
Meat sauce
50
180
S
Mercuric cyanide
60
S
Mercurochrome
23
S
Mercuric chloride
23
S
Mercurous nitrate
60
S
Mercury
23
S
Methyl alcohol (100%)
23
365
S
60
30
S
Methyl bromide
20
M
60
U
Methyl ethyl ketone
20
180
M
50
180
M
Methyl isobutyl carbonil
50
180
S
Methyl isobutyl ketone
21
100
S
60
100
U
Methylene chloride
23
M
Milk
23
30
S
Mineral oil (white)
60
30
M
Molasses
23
S
Monochloracetic acid
60
S
Motor oil (Shell X-100)
50
180
S
60
100
S
Mustard paste
23
S
n-Heptane
60
100
M
Naphta
20
M
Naphtalene
20
M
60
M
100
M
Natural Gas
23
S
Neatsfoot oil
23
103
S
60
110
S
Nickel chloride
23
S
Nickel nitrate
100
S
Nickel salts
23
S
Nickel sulphate
23
S
Nitric acid, conc.
23
365
S
50
180
S
60
30
U
Nitric acid, dil (10%)
21
100
S
60
100
M
Nitric acid, (30%)
23
100
M
Nitric acid (40%)
23
365
M
60
30
U
Nitric acid conc. (50%)
21
100
M
60
100
U
Nitric acid (75%)
20
180
M
Nitric acid, fuming
23
365
U
Nitrobenzene
20
180
S
50
180
S
60
100
U
Nitrogen oxides
23
S
Nitrous acids
23
S
Nutmeg oil
23
82
U
Oils, vegetables
23
S
Oleic acid
50
180
S
60
30
U
Oleum
20
U
Olive oil
23
365
S
60
152
S
Orange oil
20
S
Oxalic acid
50
180
S
Oxalic acid (50%)
23
365
S
Oxygen gas
23
S