Important Isocyanate (ISO) Information
Important Isocyanate (ISO) Information
Isocyanates (ISO) are catalysts used in two
component materials.

Isocyanate Conditions

Spraying or dispensing materials containing
isocyanates creates potentially harmfulmists,
vapors, and atomized particulates.
Read and understand material manufacturer’s
warnings and material MSDS to know specific
hazards and precautions related to isocyanates.
Prevent inhalation of isocyanate mists, vapors,
and atomized particulates by providingsufficient
ventilation in the work area. If sufficient ventilation
is not available,a supplied-air respirator is required
foreveryoneintheworkarea.
To prevent contact with isocyanates,appropriate
personal protective equipment, including
chemically impermeable gloves, boots,aprons,
and goggles, is also required foreveryone in the
work area.

Keep Components A and B Separate

Cross-contamination can result in cured
material in fluid lines which could cause serious
injury or damage equipment. To prevent
cross-contamination:
•Never interchange componentA and component
B wetted parts.
• Never use solvent on one side if it has been
contaminated from the other side.

Moisture Sensitivity of Isocyanates

Exposure to moisture (such as humidity) will cause
ISO to partially cure; forming small, hard, abrasive
crystals, which become suspended in the fluid.
Eventually a film willform on the surface and the ISO
will begin to gel, increasingin viscosity.

NOTICE

Partially cured ISO will reduce performanceand
the life of all wetted parts.
• Always use a sealed container with a desiccant
dryer in the vent, or a nitrogen atmosphere.
Never store ISO in an open container.
• Keep the ISO pump wet cup or reservoir (if
installed) filled with appropriate lubricant. The
lubricant createsa barrier between the ISO and
the atmosphere.
• Use only moisture-proof hoses compatible with
ISO.
• Never use reclaimed solvents, which may
contain moisture. Always keep solvent
containers closed when not inuse.
• Always lubricate threaded parts with an
appropriate lubricantwhen reassembling.
NOTE: The amount of film formation and rate of
crystallization varies depending on the blend of ISO,
the humidity, and the temperature.

Changing Materials

NOTICE

Changing the material types used in your
equipment requires special attention to avoid
equipment damage and downtime.
•When
changing materials, flush the equipment
multiple times to ensureit is thoroughly clean.
•Alw
ays clean the fluid inlet strainers after
flushing.
•Che
ck with your material manufacturer for
chemical compatibility.
•Wh
en changing between epoxiesand urethanes
or polyureas, disassemble and clean all fluid
components and change hoses. Epoxies often
haveamines on the B (hardener) side. Polyureas
often have amines on the A (resin) side.
8332458B