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EC number: 208-760-7
CAS number: 540-88-5
butyl acetate is expected to hydolyse slowly in water, with half-life at
environmentally relevant conditions expected to be between 6 -12 months.
Based on the chemical structure of tertiary butyl acetate, it is
considered to hydrolyse at the ester functional group to give tertiary
butyl alcohol and acetic acid. Estimated half-life for atmospheric
degradation was 19.7 days.The
reaction rate constant for OH radical degradation was determined to be
0.56 +/- 0.05 E-12 cm3/molecule/second.
tertiary butyl acetate is reacted with OH radicals in the presence of
NO, the products acetone and acetic anhydride are formed at molar
formation yields of 0.49 +/- 0.05 and 0.20 +/- 0.02 respectively.
The POCP of
tertiary butyl acetate has been calculated as 6.5. Ethane has a POCP of
12.3 and it has been long established to be unreactive and not thought
to significantly contribute to regional scale ozone formation. Tertiary
butyl acetate has a POCP lower than that of ethane and so could be
considered to provide a negligible contribution to regional scale ozone
MIR, MOIR and EBIR scales, tertiary butyl acetate yields reactivity
values (gm O3/gm VOC) of 0.180, 0.102 and 0.062 respectively.
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