Chromated Copper Arsenate (CCA):
Safety and Precautions When Working With CCA Alternatives
CCA Table of Contents
For information on the appropriate hardware to use with CCA alternative wood preservatives, please refer to the manufacturers' information below.
Industry Application Recommendations:
- Osmose, Inc. (ACQ) - Naturewood Fastener and Hardware Information Sheet (PDF) (2 pp, 83k, About PDF)
- Chemical Specialties, Inc. (ACQ) - Information sheet on fasteners (PDF)(3 pp, 82k, About PDF)
- Arch Wood Protection, Inc. (copper azole) - Wolmanized® Outdoor® Wood: Recommended Hardware
- Janssen Pharmaceutica, Inc. (cyproconazole and propiconazole) Same hardware recommendations as ACQ and copper azole.
Handling and Disposal Recommendations
- Wear a dust mask, gloves, and goggles when cutting or handling treated or untreated wood. Whenever possible perform these operations outdoors to avoid indoor accumulations or airborne sawdust.
- After working with wood, wash exposed skin thoroughly.
- Wash work clothes separately from other household clothing to avoid cross-contamination.
- Do not use pressure-treated wood where it may come into direct or indirect contact with drinking water, except for uses involving incidental contact such as fresh water docks and bridges.
- Do not use pressure-treated wood in circumstances where the preservative may become a component of food, animal feed, or beehives.
- Do not use pressure-treated wood for mulch.
- Do not burn pressure-treated wood in open fires or in stoves, fireplaces or residential boilers because toxic substances may be produced as part of the smoke and ashes.
- Treated wood can be disposed of with regular municipal trash (i.e., municipal solid waste, not yard waste). Homeowners should contact the appropriate state and local agencies for further guidance on the disposal of treated wood.
- Dispose of treated wood from commercial or industrial use (e.g., construction sites) by complying with local landfill rules. It can also be burned in commercial or industrial incinerators or boilers when done in accordance with state and federal regulations.
(1)ASTM-A153: Standard Specification for Zinc Coating (Hot-Dip) on Iron and Steel Hardware. ASTM A153 specifies a minimum of 1.0 oz/ft2 of zinc coating for hot-dip fasteners 3/8 inch and under in diameter, rivets, nails and similar articles and washers under 3/16 inch in thickness. It also specifies 1.25 oz/ft2 of zinc coating for hot-dip fasteners over 3/8 inch in diameter and similar articles, and washers 3/16 inch and ¼ inch thick.