Registration Dossier
Registration Dossier
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EC number: 209-161-3 | CAS number: 557-20-0
Flammability
Administrative data
Link to relevant study record(s)
- Endpoint:
- pyrophoric liquids
- Data waiving:
- study scientifically not necessary / other information available
- Justification for data waiving:
- the study does not need to be conducted because the substance is pyrophoric
- Endpoint:
- substances / mixtures which in contact with water emit flammable gases
- Data waiving:
- study scientifically not necessary / other information available
- Justification for data waiving:
- other:
- Endpoint:
- self-heating substances / mixtures
- Data waiving:
- study technically not feasible
- Justification for data waiving:
- the study does not need to be conducted because the substance is pyrophoric
- Endpoint:
- flammable solids
- Data waiving:
- study technically not feasible
- Justification for data waiving:
- the study does not need to be conducted because the substance is a liquid
- Conclusions:
- Determination of flammability is not required for zinc alkyls due to
their pyrophoric nature.
Referenceopen allclose all
Description of key information
The endpoint is waived, the substance is a pyrophoric and explosively water reactive (emitting ethane) substance.
Key value for chemical safety assessment
- Flammability:
- pyrophoric
Additional information
According to the Annex VII Standard Information Requirements for REACH, determination of flammability is required. Column 2 - specific rules for adaption from column 1 - states that flammability determination does not need to be conducted in case the substance is pyrophoric. Zinc alkyls are highly reactive both towards oxygen (air) and water as explained below. They are exclusively marketed in liquid state and shipped under UN transport class 4.2 (substances liable to spontaneous combustion / pyrophoric liquids) or at least under class 4.3 (substances which in contact with water emit flammable gases).
Justification for classification or non-classification
The substance is harmonized as a pyrophoric and water reactive liquid
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.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
