MSDS

4
(Heindel et al., Fund Appl. Toxicol. 18, 266-277 (1992))
SECTION 12 - ECOLOGICAL INFORMATION
ECOTOXICITY DATA:
Phytotoxicity:
Although boron is an essential micronutrient for healthy growth of boron-sensitive plants, it
can be harmful to plants in higher quantities. Plants and trees can easily be exposed by root absorption to
toxic levels of boron in the form of water-soluble borate leached into nearby soil or waters. Care should be
taken to minimize the amount of borate product released to the environment.
Fish Toxicity: Boron naturally occurs in sea water at an average concentration of 5 mg B/liter. In
laboratory studies the acute toxicity (96-hr LC
50
) for under-yearling Coho salmon (Opchorhynchus kisutch) in
sea water was determined as 40 mg B/L (added as sodium metaborate). Boron concentrations in fresh
surface waters are generally less than 1 mg B/L. Laboratory studies on the toxicity of freshwater fish were
determined using early life (embryo-larval) stages in natural water and Boric Acid as a test substance. The
results were:
Rainbow Trout (S. gairdneri)
24-day LC
50
=150.0 mb B/L
36-day NOEC•LOEC=0.75-1 mg B/L
Goldfish (Carassius auratus)
7-day NOEC•LOEC=26.50 mg B/L
3-day LC
50
=178 mg B/L
Invertebrate Toxicity: The acute toxicity (48-hour LC
50
) to Daphnids (Daphnia magna Straus) in natural
water is reported to be 133 mg B/L (added as boric acid). Estimated chronic toxicity (21-day NOEC•LOEC)
values of 6-13 mg B/L (added as boric acid) have also been reported.
ENVIRONMENTAL FATE DATA:
Persistence/Degradation: Boron is naturally occurring and ubiquitous in the environment. Disodium
Octaborate Tetrahydrate decomposes in the environment to natural borate.
Soil Mobility: The product is soluble in water and is leachable through normal soil.
NOTE: Boron (B) is the element in Disodium Octaborate Tetrahydrate which is used to characterize borate
product ecological effects. To convert Disodium Octaborate Tetrahydrate data to Boron (B), multiply by
0.2096.
SECTION 13 - DISPOSAL CONSIDERATIONS
Disposal Guidance: Small quantities of Disodium Octaborate Tetrahydrate can usually be disposed of at
Municipal Landfill sites. No special disposal treatment is required, but refer to state and local regulations for
applicable site-specific requirements. Tonnage quantities of product are not recommended to be sent to
landfills. Such product should, if possible, be re-used for an appropriate application.
RCRA (40 CFR 261):
Disodium Octaborate Tetrahydrate is not listed under any sections of the Federal
Resource Conservation and Recovery Act (RCRA).
California Hazardous Waste Designation: California identifies substances with acute LD
50
's less than
5000 mg/kg as "hazardous wastes". Disodium Octaborate Tetrahydrate is therefore a "hazardous waste" if
spilled in California, and should be handled in accordance with applicable state regulations. Refer to
Regulatory Information for additional information
SECTION 14 - TRANSPORT INFORMATION
DOT Hazardous Material Classification: Disodium Octaborate Tetrahydrate is not a U.S. Department of
Transportation (DOT) Hazardous Material.
DOT Hazardous Substance Classification: Disodium Octaborate Tetrahydrate is not a DOT Hazardous
Substance.
International Transportation: Disodium Octaborate Tetrahydrate has no U.N. Number , and is not
regulated under international rail, highway, water, or air transport regulations.
SECTION 15 - REGULATORY INFORMATION
TSCA No.: Disodium Octaborate Tetrahydrate appears on the EPA TSCA inventory list under the CAS No.
12008-41-2, which represents the anhydrous form of this inorganic salt.
FIFRA:
Board Defense® (insecticide) is registered with the EPA, in accordance with Section 3 of FIFRA, as
a pesticide product. Refer to official EPA registered product label for additional product Hazard and
Precautionary information.
RCRA:
Disodium Octaborate Tetrahydrate is not listed as a hazardous waste under any sections of the
Resource Conservation and Recovery Act or regulations (40) CFR 261 et seq.).