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EC number: 812-724-1
CAS number: 106705-37-7
Metal carboxylates are substances consisting of a metal and a
carboxylic acid. Based on the solubility of strontium neodecanoate in
water (8.47 g dissolved Sr/L at pH 8.4 corresponding to 45.07 g
strontium neodecanoate/L), a complete dissociation of strontium
neodecanoate resulting in strontium and neodecanoate ions may be assumed
under environmental conditions. The indirect photochemical degradation
of neodecanoic acid as mediated by OH-attack is estimated to have a
half-life of 1.2 days or 13.9 hours based on a 12 -hour sunlight day, a
rate of 7.54E-12 cm3/molecule*sec. A 12-hour day half-life value
normalizes degradation to a standard day light period during which
hydroxyl radicals needed for photolysis are generated in the atmosphere.
Although neodecanoic acid has the potential to degrade rapidly by
OH-attack, multimedia distribution modelling indicates neodecanoic acid
is predicted to partition negligibly (0.1%) to the air compartment
because it has a low vapor pressure (0.9 Pa) and a relatively short
atmospheric oxidation half-life (13.9 hours). Therefore, this process is
unlikely to contribute significantly to the loss of neodecanoic acid
from the environment. For strontium ions the concept of
phototransformation is not applicable and therefore phototransformation
in sum does not seem to play a role for strontium neodecanoate.
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