Specification

Wolmanized ® Residential Outdoor® Wood Page 3 of 4
September 1, 2009
9. PHYSICAL AND CHEMICAL PROPERTIES
Appearance Light Brown to Green Specific Gravity (Water =1) NA
Odor None Boiling Point NA
Solubility in Water NA Vapor Density (Air=1) NA
Physical State Solid Vapor Pressure NA
pH NA Freezing Point NA
10. STABILITY AND REACTIVITY
Conditions contributing to instability: None known.
Incompatibilities: Strong acids, open flame and oxidizers.
Hazardous Reactions/Decomposition/Combustion Products: Combustion products may include smoke, toxic
fumes or gases.
Hazardous Polymerization: Does not occur.
11. TOXICOLOGICAL INFORMATION
Carcinogenicity Data: IARC has classified untreated hardwood and hardwood/softwood mix wood dust as a Group
I human carcinogen. The wood dust classification is based primarily on IARC’s evaluation of increased risk in the
occurrence of adenocarcinomas of the nasal cavities and paranasal sinuses associated with occupational exposures
to untreated wood dust. NTP has classified all untreated wood dust as a carcinogen.
A human health risk assessment has been conducted in accordance with U.S. Environmental Protection Agency
(EPA) risk assessment guidance in order to evaluate human health risks associated with exposures to Copper Azole
Type B (CA-B) treated wood. Four different scenarios, including occupational (adult builders), resident handler
(adult female), subchronic (child) and chronic (child to adult) residential, and playground (child and teenager) were
evaluated. Exposures evaluated in the risk assessment include incidental ingestion and dermal contact with
dislodgeable residue from the surface of CA-B treated wood and soil impacted with tebuconazole (TEB) and copper,
inhalation of sawdust from CA-B treated wood, and inhalation of re-suspended soil particulate. Non-cancer health
risks are expressed as margin of exposure (MOE), which is a ratio of the no observed effect level (NOEL) or the
lowest observed effect level (LOEL) for a constituent, to an estimated exposure level for the constituent. The
greater the MOE, the less likely that exposure to the constituent will pose a potential health risk. Based on the
evaluation, the lowest MOE of 170 is for incidental ingestion of copper in the soil for the child resident (ages 1-6
years). Based on EPA guidance, an MOE of 10 is the benchmark for this exposure route. Thus, no adverse health
effects are expected. Most of the MOEs calculated in the risk assessment are greater than 1,000, and therefore,
none of the exposures to TEB or copper evaluated pose a potential health risk. Cancer risks were not assessed
because according to EPA, neither TEB nor copper is a known or probable carcinogen.
12. ECOLOGICAL INFORMATION
Copper Azole treated wood leaching studies were conducted for 30.5 days on commodity size products in dynamic
test cylinders using diluent water at nominal temperatures of 5, 15, and 25 degrees C and pH of 5.5, 7.0 and 8.5.
Samples collected on days 1.5, 2.5, 4.5, 7.5, 10.5, 15.5, 22.5, and 30.5 were analyzed for total copper and
tebuconazole (TEB). The treated wood was then leached for an additional 307.6 to 386.8 days in an experimental
pond to confirm long term preservative loss rates. A suite of bioassays were conducted on day 0.5 effluent. Copper
and TEB loss rates declined exponentially with time and appeared to reach steady state losses at the end of about
week 3. Predictive equations describing these loss rates, for use in developing a risk assessment model, were
developed using non-linear regression analysis. Bioassay results indicated that environmental risks associated with
CA-B preserved wood can be evaluated solely on copper predictions and water quality criteria for copper. The TEB
did not add to the toxicity of the effluent. In fact, it appears that the increased dissolved organic carbon associated
with TEB and wood extractives reduced the copper’s toxicity in the effluent. These studies were conducted at
dilution water flow rates much lower than could be anticipated in open aquatic environments. Dilution factors in very