Registration Dossier
Registration Dossier
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EC number: 211-330-1 | CAS number: 638-29-9
Toxicity to microorganisms
Administrative data
Link to relevant study record(s)
Description of key information
Parent compound valeryl chloride: No data.
Hydrolysis product valeric acid: An inhibition of the degradation activity of activated sludge is not anticipated when the substance is introduced in appropriate low concentrations.
Hydrolysis product HCl: No data.
Key value for chemical safety assessment
- EC50 for microorganisms:
- 189 mg/L
Additional information
Parent compound valeryl chloride:
No data are available for valeryl chloride (CAS 638 -29 -9). The substance rapidly decomposes in water and forms HCl (CAS 7647 -01 -0) and valeric acid (CAS 109 -52 -4). Therefore, the toxicity to microorganisms is assessed on the basis of data on valeric acid.
Hydrolysis product valeric acid: Growth inhibitory effects on the ciliate Tetrahymena pyriformis were investigated following the method of Schultz (1997). The 40 -h EC50 was 189 mg/L (Schultz et al., 2002).
Based on the result above, the inhibition of the degradation activity of activated sludge is not anticipated when the substance is introduced in appropriately low concentrations.
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