Registration Dossier
Registration Dossier
Data platform availability banner - registered substances factsheets
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Diss Factsheets
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 270-299-2 | CAS number: 68424-38-4 This substance is identified by SDA Substance Name: C16-C18 alkyl carboxylic acid sodium salt and SDA Reporting Number: 19-006-04.
- Life Cycle description
- Uses advised against
- Endpoint summary
- Appearance / physical state / colour
- Melting point / freezing point
- Boiling point
- Density
- Particle size distribution (Granulometry)
- Vapour pressure
- Partition coefficient
- Water solubility
- Solubility in organic solvents / fat solubility
- Surface tension
- Flash point
- Auto flammability
- Flammability
- Explosiveness
- Oxidising properties
- Oxidation reduction potential
- Stability in organic solvents and identity of relevant degradation products
- Storage stability and reactivity towards container material
- Stability: thermal, sunlight, metals
- pH
- Dissociation constant
- Viscosity
- Additional physico-chemical information
- Additional physico-chemical properties of nanomaterials
- Nanomaterial agglomeration / aggregation
- Nanomaterial crystalline phase
- Nanomaterial crystallite and grain size
- Nanomaterial aspect ratio / shape
- Nanomaterial specific surface area
- Nanomaterial Zeta potential
- Nanomaterial surface chemistry
- Nanomaterial dustiness
- Nanomaterial porosity
- Nanomaterial pour density
- Nanomaterial photocatalytic activity
- Nanomaterial radical formation potential
- Nanomaterial catalytic activity
- Endpoint summary
- Stability
- Biodegradation
- Bioaccumulation
- Transport and distribution
- Environmental data
- Additional information on environmental fate and behaviour
- Ecotoxicological Summary
- Aquatic toxicity
- Endpoint summary
- Short-term toxicity to fish
- Long-term toxicity to fish
- Short-term toxicity to aquatic invertebrates
- Long-term toxicity to aquatic invertebrates
- Toxicity to aquatic algae and cyanobacteria
- Toxicity to aquatic plants other than algae
- Toxicity to microorganisms
- Endocrine disrupter testing in aquatic vertebrates – in vivo
- Toxicity to other aquatic organisms
- Sediment toxicity
- Terrestrial toxicity
- Biological effects monitoring
- Biotransformation and kinetics
- Additional ecotoxological information
- Toxicological Summary
- Toxicokinetics, metabolism and distribution
- Acute Toxicity
- Irritation / corrosion
- Sensitisation
- Repeated dose toxicity
- Genetic toxicity
- Carcinogenicity
- Toxicity to reproduction
- Specific investigations
- Exposure related observations in humans
- Toxic effects on livestock and pets
- Additional toxicological data
Short-term toxicity to aquatic invertebrates
Administrative data
Link to relevant study record(s)
Description of key information
- EC50 = 40 mg/l after 24 h | Daphnia magna | DIN 38412-L 11 | tallow soap
- EC50 = 48 mg/l after 24 h | Daphnia magna | DIN 38412-L 11 | sodium laurate
- EC50 = 25 mg/l after 24 h | Daphnia magna | DIN 38412-L 11 | palm kernel soap
- EC50 = >500 mg/l after 24 h | Daphnia magna | OECD 202 | olive oil
Key value for chemical safety assessment
Additional information
Using the Daphnia test (DIN 38412 L11), the acute toxicity of soaps (tallow soap and palm kernel soap) and alkali-carboxylate (sodium laurate) were examined for the possible influence of soaps on aquatic biological communities. The EC values found are summarized below:
|
24 h EC0 [mg/l] |
24 h EC50 [mg/l] |
24 h EC100 [mg/l] |
Sodium laurate |
15 |
48 |
125 |
Palm kernel soap |
6.3 |
25 |
50 |
Tallow soap |
30 |
40 |
50 |
Sodium laurate is less toxic to Daphnia magna. The technical soaps are in their toxicity spectra in a similar range as the sodium laurate.
Tallow soap contains:
- 40% Oleic acid
- 25% Palmitic acid
- 19% Stearic acid
- 5% Linoleic acid
- 3% Palmitoleic acid
- 3% Myristic acid
- 1% Linolenic acid
Palmitic acid and stearic acid are the both major components of the fatty acid C16 -18, sodium salt.
In the static test according OECD Guideline 202 the test organisms (Daphnia magna) are exposed to the test substance olive oil added to water at a range of concentrations (approximately 20 animals per concentration) for a period of 24 hours. Immobilities (the loss of the ability to swim) are recorded and ultimately, the EC0 and the EC100 are determined. Based on these data the EC50 is calculated.
The following results were obtained for Comperlan COD
EC0 = 500 mg active matter /l
EC50 > 500 mg active matter /l
The fatty acid composition of olive oil is:
- Myristic acid ca. 10%
- Palmitic acid ca. 3%
- Oleic acid ca 80%
- Linoleic acid ca. 7%
- unsaponifiables ca. 1.2%
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.