Chapter 5 – Maintenance
5-3
Chemical Compatibility
Certain combinations of chemical environments, temperature, and stress can
adversely affect parts made from thermoplastic resin. For this reason material which
may come in contact with the 3510/3512 unit should be carefully evaluated under
end-use conditions for compatibility. You should also follow the use and
compatibility recommendations of the material manufacturer. The following table
lists general chemical compatibility guidelines for the 3510/3512.
3510/3512 Chemical Compatibility
Chemical
Class
Effects
Acids
No effect under most common conditions of concentration and temperature.
Alcohols
Generally compatible at low concentration and room temperature. Higher
concentrations and elevated temperatures result in etching and attack
evidenced by decomposition.
Alkalis
Generally compatible at low concentration and room temperature. Higher
concentrations and elevated temperatures result in etching and attack
evidenced by decomposition.
Aliphatic
Hydrocarbons
Generally compatible
Amines
Surface crystallization and chemical attack. Avoid.
Aromatic
Hydrocarbons
Partial solvents and severe stress cracking agents. Avoid.
Detergents and
Cleaners
Mild soap solutions are compatible. Strong alkaline materials should be
avoided.
Esters
Causes severe crystallization. Partial solvents. Avoid.
Greases and
Oils
Pure petroleum types generally compatible. Many additives used with them
are not compatible.
Halogenated
Hydrocarbons
Solvents. Avoid.
Ketones
Causes severe crystallization and stress cracking. Partial solvents. Avoid.
Silicone Oil and
Greases
Generally compatible up to 85ºC (185º F). Some contain aromatic
hydrocarbons which should be avoided.
