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EC number: 203-812-5
CAS number: 110-88-3
with water 1,3,5 trioxane will hydrolyse slowly under environmental
conditions (half-life >1 yr). A calculation on Henry´s law constant
indicates that trioxane will not evaporate from
the water surface into
the atmosphere (H = 0.02 Pa*m³/mol). After emission into the atmosphere,
the substance will be slowly degraded by indirect photochemical
processes (half-life of 37.5 h). Furthermore, adsorption of
1,3,5-trioxane to the solid soil phase is not expected (log Koc =
-0.416). Thus, the substance will mainly distribute into water (ca. 80%)
and air (ca. 20%). Based on the calculated log Pow (-0.5) of
1,3,5-trioxane a bioaccumulation is not expected. A modified
Zahn-Wellens test was conducted using a closed system with sodium
nitrate as the oxygen source. In this study, more than 90% of the DOC
was removed in 18 days. Another study showed that trioxane is easily
removed from water by volatilization. Therefore, trioxane was classified
to be easily eliminated from water and inherently biodegradable.
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