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When this substance comes in contact with water or moisture, a complete hydrolysis will take place with no significant reaction products other than octyl alcohol isomers (Exxal 8; alcohols C7-9-iso, C8-rich) and hydrated titanium dioxide (key study on hydrolysis OECD 111). The organic decomposition product Exxal 8 is readily biodegradable and not persistent as the log Kow value is 3.2. The CSA indicates that toxicity of this substance is similar to the main degradation product Exxal 8.

Because of rapid hydrolysis (half-life <10 minutes), a toxicity study on soil microorganisms is unjustified, and the key value for CSA is obtained from the most reliable 14 days EC50 value is 477 mg/kg soil on earthworm (peer-reviewed secondary source, Cash et al (1999) and calculated value by using ECOSAR model in US EPA EPIsuite).

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