Registration Dossier
Registration Dossier
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EC number: 291-793-4 | CAS number: 90480-58-3
Endpoint summary
Administrative data
Description of key information
Octanoic acid, zinc salt, basic is a beige-brown solid (fine beads) with a slight characteristic odour. The melting point is 133.5°C. The decomposition of octanoic acid, zinc salt, basic started at > 300°C. Thus, a boiling point could not be determined. The measured relative density of octanoic acid, zinc salt, basic is 1.24. As the substance is a salt with a melting point of 133.5, vapour pressure can be safely assumed to be negligible, i.e. below the level of relevance (10^-5 Pa). Octanoic acid, zinc salt, basic is a surface-active substance. The water solubility of octanoic acid, zinc salt, basic is 320.6 ± 14.7 mg/L, resulting in zinc concentration of 72.47 ± 3.32 mg/L. The partition coefficient of this substance is not considered to be relevant. Octanoic acid, zinc salt, basic is not flammable.Flash point, explosive properties, self-ignition temperature, oxidising properties, stability in organic solvents and identity of relevant degradation products as well as dissociation constant and viscosity are not relevant for this substance in accordance with column 2 of the respective sections of Regulation (EC) No 1907/2006, Annexes VII to IX or Annex XI, section 1.
The granulometry of a representative test material is summarized as follows:
- D10: 175 µm
- D50: 315 µm
- D90: 470 µm
Additional information
Octanoic acid, zinc salt, basic does not need to be classified for physico-chemical properties, according to CLP Regulation (EC) No 1272/2008:
octanoic acid, zinc salt, basic is not flammable;
explosive properties are considered non-relevant based on lack of explosive properties;
oxidising properties are considered non-relevant based on the chemical structure.
The structural similar substance "Fatty acids, C16-18, zinc salts (CAS# 91051-01-3), relevant for read-across to octanoic acid, zinc salt, basic was subject of a EU Risk Assessment. Conclusions from EU RAR Zinc stearate (CAS# 91051-01-3, CAS# 557-05-1) Part I - Environment (Final report R074_0805_env, May 2008;http://echa.europa.eu/documents/10162/08799aec-42c5-44e0-9969-baa022c66db1) are in line with the conclusions for octanoic acid, zinc salt, basic: “Data on boiling point, vapour pressure, and surface tension were not provided. In view of the nature of the substance determination of these parameters is considered to be irrelevant. Information on flammability, explosive properties and oxidizing properties is not available. However, on theoretical considerations the compound is concluded to be not flammable, not explosive and not oxidizing.”
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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