Registration Dossier
Registration Dossier
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EC number: 200-816-9 | CAS number: 74-86-2
Toxicity to soil macroorganisms except arthropods
Administrative data
Link to relevant study record(s)
Description of key information
The estimated 14 day LC50 is 67 ppm for earthworms.
Key value for chemical safety assessment
- Short-term EC50 or LC50 for soil macroorganisms:
- 67 mg/kg soil dw
Additional information
Measured data are not available for the terrestrial toxicity endpoints. In accordance with column 2 of REACH Annex IX, the acute toxicity tests do not need to be conducted if there are mitigating factors indicating that aquatic toxicity is unlikely to occur. Acetylene is a gas at standard temperature and pressure and is expected to partition primarily to air.
The ECOSAR model (Nabholz and Mayo-Bean 2009) has been used to calculate the likely toxicity of acetylene to terrestrial organisms. The ECOSAR model is an appropriate QSAR model for Acetylene as it is based on a related chemical dataset that calculates the toxicity of neutral organic hydrocarbons whose mode of action is non-polar narcosis.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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