Registration Dossier
Registration Dossier
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EC number: 931-275-3 | CAS number: 1125503-33-4
Endpoint summary
Administrative data
Description of key information
Additional information
ABIOTIC
DEGRADATION IN AIR
DIRECT
PHOTOLYSIS in air
HYEQS
does not absorb light >290 nm (ozone band) and therefore a direct
photolysis in air will not occur.
INDIRECT PHOTOLYSIS in air
OH radical induced indirect photolysis of HYEQS can be estimated with US EPA AOPWIN Program estimating low degradation half-lives (C12 homologue 2.8h, C14 homologue 3h). But as HYEQS has a low vapour pressure, high water solubility and therefore a low Henry’s Law Constant of 1.5*10-4Pa*m3/mole (see IUCLID Sections 4.6 & 4.8), volatilisation is not an exposure route which has to be considered.
ABIOTIC DEGRADATION IN WATER
HYDROLYSIS
HYEQS has no functional groups which could be hydrolyzed under envrionmental conditions as stated in OECD Guideline 111. In addition HYEQS is readily biodegradable.
DIRECT
PHOTOLYSIS in water
HYEQS
does not absorb light >290 nm (ozone band) and therefore a direct
photolysis in water will not occur.
INDIRECT PHOTOLYSIS in water
OH radical induced indirect photolysis of HYEQS in air can be estimated with US EPA AOPWIN Program estimating low degradation half-lives (C12 homologue 2.8h, C14 homologue 3h). Therefore HYEQS may also be degraded in water by indirect photolysis if sufficent OH radicals were available. As HYEQS is rapidly biodegraded in surface water (see IUCLID Section 5.2.2) indirect photolysis will play a minor role in degradation.
ABIOTIC DEGRADATION IN SOIL
DIRECT PHOTOLYSIS in soil
HYEQS does not absorb light >290 nm (ozone band) and therefore a direct photolysis on soil surface will not occur.
INDIRECT PHOTOLYSIS in soil
OH radical induced indirect photolysis of HYEQS in air can be estimated with US EPA AOPWIN Program estimating low degradation half-lives (C12 homologue 2.8h, C14 homologue 3h). Therefore HYEQS may be degraded on soil surface by indirect photolysis but as HYEQS is rapidly biodegraded in aerobic soils (see IUCLID Section 5.2.3) indirect photolysis will play a minor role in degradation.
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