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EC number: 232-304-6
CAS number: 8002-26-4
A complex combination of tall oil rosin and fatty acids derived from acidulation of crude tall oil soap and including that which is further refined. Contains at least 10% rosin.
No measured data are available for the
photolysis of DTO.
The SRC AOPWIN program was used to obtain
values of the rate constant kOH for reaction of each
constituent with hydroxyl radicals. The program outputs for the
individual constituents have been used to calculate a weighted average
value for each block based on the modelled composition of DTO. The
methods used to determine the rate constants are described in PFA
(2010b). The resulting values for the blocks are shown in Table 4.1.
4.1: Constituent blocks rate constants and half-lives for reaction
with hydroxyl radicals
AOPWIN rate constant [cm3.molec-1.s-1]
Rate constant for degradation in air (d-1)
Half-life in air (d)
Low boiling fatty acids
C16 saturated - C18.3 unsaturated fatty acids
C18 saturated - C24 saturated and unsaturated fatty acids
Tetracosanol and dehydrated sterol
Sitosterols and analoque
assessed because they are high polymeric constituents
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