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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 269-642-9 | CAS number: 68308-30-5
- 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
Exposure related observations in humans: other data
Administrative data
- Endpoint:
- exposure-related observations in humans: other data
- Type of information:
- read-across from supporting substance (structural analogue or surrogate)
- Adequacy of study:
- key study
Cross-reference
- Reason / purpose for cross-reference:
- read-across source
Reference
- Endpoint:
- exposure-related observations in humans: other data
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Study period:
- 21 - 24 Dec 2004
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Acceptable, well documented study report which meets basic scientific principles. The analytical purity of the test substance was not specified.
- Type of study / information:
- The skin irritation effects (erythema and edema) of occlusive exposure to the test substance for 24 hours was assessed in volunteers.
- Endpoint addressed:
- skin irritation / corrosion
- Principles of method if other than guideline:
- In a single exposure patch test, the undiluted test substance was applied to the back skin of volunteers for 24 hours under occlusive conditions. The skin irritation effects (erythema and edema) were assessed 30 minutes and 24 hours after patch removal.
- GLP compliance:
- no
- Ethical approval:
- other: subjects signed an 'informed consent'-form
- Details on study design:
- In a single exposure patch test, 20 µL of the undiluted test substance was applied to the upper back skin of 11 volunteers. The test substance was placed in an aluminium cup (Finn Chamber Test) measuring 8 mm in diameter with a volume of 20 µL, covering an area of approximately 50 mm². The cup was fixed to the test area with adhesive tape and left for 24 hours. A positive control cup containing 1% solution of sodium sulfate and a negative control cup containing distilled water, was fixed to the skin in parallell with the test cup. The skin irritation effects (erythema, edema, vesicles, cutaneous dryness, wrinkling, glazing) were assessed 30 minutes and 24 hours after patch removal and the subjective experience of the volunteers was recorded.
- Exposure assessment:
- not specified
- Details on exposure:
- TYPE OF EXPOSURE: dermal
EXPOSURE PERIOD: 24 hours
POSTEXPOSURE PERIOD: 24 hours - Results:
- 1/11 subjects were excluded as moderate erythema was noted at the negative control site. Slight to moderate erythema was observed at the test site in 3/10 subjects 30 minutes after exposure ended and in 1/10 24 hours after patch removal. The positive control was shown to be valid, as slight to moderate erythema was noted at the positive control site in 11/11 subjects.
- Conclusions:
- The test substance was not a skin irritant under the chosen test conditions.
Table 1: individual skin irritation scores
Reading time point |
Subject No. |
Erythema score |
Edema score |
30 min. |
1 |
1.5 |
0 |
30 min. |
2 |
0 |
0 |
30 min. |
3 |
0 |
0 |
30 min. |
4 |
1 |
0 |
30 min. |
5 |
0 |
0 |
30 min. |
6 |
0 |
0 |
30 min. |
7 |
0 |
0 |
30 min. |
8* |
0 |
0 |
30 min. |
9 |
0 |
0 |
30 min. |
10 |
0 |
0 |
30 min. |
11 |
1.5 |
0 |
24 hours |
1 |
0 |
0 |
24 hours |
2 |
0 |
0 |
24 hours |
3 |
0 |
0 |
24 hours |
4 |
0 |
0 |
24 hours |
5 |
0 |
0 |
24 hours |
6 |
0 |
0 |
24 hours |
7 |
0 |
0 |
24 hours |
8* |
0 |
0 |
24 hours |
9 |
0 |
0 |
24 hours |
10 |
0 |
0 |
24 hours |
11 |
1 |
0 |
* result disregarded due to reaction to negative control
Data source
Materials and methods
Test material
- Reference substance name:
- Fatty acids, montan-wax, stearyl esters
- EC Number:
- 269-642-9
- EC Name:
- Fatty acids, montan-wax, stearyl esters
- Cas Number:
- 68308-30-5
- Molecular formula:
- C18 H38 O - C66 H130 O4
- IUPAC Name:
- Fatty acids C22-30 (even numbered), octadecyl alcohol esters
Constituent 1
Results and discussion
- Results:
- A single patch test was available with the source substance CAS 17671-27-1. In this study, 1/11 subjects were excluded as moderate erythema was noted at the negative control site. Slight to moderate erythema was observed at the test site in 3/10 subjects 30 minutes after exposure ended and in 1/10 24 hours after patch removal. The positive control was shown to be valid, as slight to moderate erythema was noted at the positive control site in 11/11 subjects.
Applicant's summary and conclusion
- Conclusions:
- The source substance docosyl docosanoate (CAS 17671-27-1) did not show skin irritant properties under the chosen test conditions. Applying the read-across approach, similar results are expected for the target substance.
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.