Technical Specifications
Dow Building Solutions
7. Carefully remove the hoses from the cylinders. Use caution:
in case there is some residual liquid material and/or pressure
still in the hoses. Place hoses in plastic bag with absorbent
material as in Step 4.
8. Carefully place cylinder(s) over a waste container lined with a
plastic bag. Slowly open the valves on the cylinder(s) to catch
any residual material. With cylinder pointed away from face,
allow pressure to completely vent. Always handle and vent
cylinders in a well-ventilated area while wearing all proper
respiratory protection.
CAUTION: There is potential that a hose is blocked and the tank
is not yet empty. If the cylinder feels heavy, appears to be under
too much pressure, or contains too much material, close the valve.
In this case, the cylinder needs to be disposed of as a hazardous
waste and cannot be emptied using these procedures.
9. Absorb any remaining liquids collected in Step 8 with dry
oil absorbent material as in Step 4. Once mixed thoroughly,
it can be disposed of as ordinary industrial waste.
10. If the waste container contains an excess amount of “A” side
versus “B” side, spray a small amount of water over the waste
material but not enough to have a pool of liquid. Allow container
and waste material in the plastic bag to vent while protected
from the weather for 2448 hours. After this time, tie the bag
loosely and dispose of the solid waste as ordinary industrial
waste. If waste contains more B side than A side, then mix the
material with a stick to ensure all liquids are absorbed adding
more absorbent as necessary and dispose of as ordinary
industrial waste.
11. EMPTY and VENTED cylinders can be disposed of as scrap,
recycle steel or ordinary industrial waste.
IMPORTANT
Empty and vented cylinders can be disposed of as scrap,
recycle steel or ordinary industrial waste.
• Plan project carefully to completely empty each cylinder
before starting a new one.
• When finished, spray foam into a cardboard box to empty
the cylinders.
• Empty cylinders may be recycled to reclaim the steel.
• Cylinders containing polyol or isocyanate must be disposed
of as hazardous waste and cannot be recycled or sent to a
municipal landfill.
• Follow all local, state/provincial and federal regulations
when disposing of cylinders and handling hazardous waste.
• Pieces of cured foam are considered inert and can be
disposed of as regular trash.
The above information is provided as a courtesy for customers and
Dow believes that it is accurate. However, the customer is ultimately
responsible for determining whether the information in this document
is appropriate for customer’s use and for ensuring that the customer’s
workplace and disposal practices are in compliance with applicable
laws and other government enactments. If you have any questions
regarding applicable disposal procedures, contact the appropriate gov-
ernment official. Dow assumes no obligation or poor foam quality, refer
to the Troubleshooting section, Section 10 of this manual.
Section 9
Application Notes
9.1 Yield Notes
Board foot yields are based on the free rise of the total weight of
the liquid materials in the tanks. Many factors affect the yield in
field applications.
9.1.1 Operator Technique
For best results, apply multiple layers of foam. When spraying,
apply one-quarter to one-half inch thickness of uncured foam.
This will produce a one to one-and-one-half inch thickness of
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