Registration Dossier
Registration Dossier
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EC number: 939-066-9 | CAS number: -
Endpoint summary
Administrative data
Description of key information
The physical and chemical properties of the substance Fatty acids, 16 -18 (even numbered), ammonium salts are as follows:
Appearance/physical state/colour: The substance is a solid based on company data.
Melting point: Data waiving: The study is technically not feasible since the substance decomposes before melting.
Boling point: Data waiving: The study does not need to be conducted since the substance decomposes before boiling.
Density: Pycnometer method (UNE 55-702-82). The density of test item was determined to be 0.9479 g/ml at 25 ºC.
Particle size distribution: Data waiving: The study does not need to be conducted since the substance is marketed or used in a non solid or granular form.
Vapour pressure: 3.38E-006 Pa at 25 ºC (EPI-Suite, MPBPWIN v1.43)
Partition coefficient (log Pow): Log Kow = 5.07 (EPI-Suite, KOWWIN v1.68).
Water solubility: The water solubility of the substance was determined to be <0.05 mg/L at 23 ºC.
Surface tension: Data waiving: The study does not need to be conducted since the water solubility is below 1 mg/l at 20 ºC.
Flash point: Data waiving: The study does not need to be conducted since the substance is a solid.
Auto flammability: Data waiving: The study is not technically feasible since the substance decomposes in contact with air.
Flammability: Flammability (solids): Data waiving: The study is not technically feasible since the substance decomposes in contact with air. Flammability on contact with water: Data waiving: Based on experience on handling and use, the substance is stable and does not became spontaneously flammable or emit flammable gases in contact with water. Pyrophoric properties: Data waiving: Based on experience on handling and use, the substance is stable and does not spontaneously ignite when exposed to air.
Explosiveness: Non-explosive. The study does not need to be conducted since there are no chemical groups associated with explosive properties present in the molecule.
Oxidising properties: Non-oxidizer. The study does not need to be conducted since the substance is incapable of reaction exothermically with combustible materials on the basis of the chemical structure.
Stability in organic solvents: Data waiving: The study is only required if stability of the substance is considered to be critical.
Dissociation constant: Data waiving: The study is technically not feasible since the substance has a low water solubility (<0.05 mg/L).
Supporting data: The dissociation constant of Fatty acids, C16 -18 (even numbered), ammonium salts would be pKa(1) = 9.25 weak base and pKa(2) = 4.9 weak acid.
Viscosity: Data waiving: The study does not need to be conducted since the substance is a solid.
Additional information
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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