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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 220-678-3 | CAS number: 2861-02-1
- 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
![](https://echa.europa.eu/o/diss-blank-theme/images/factsheets/A-REACH/factsheet/print_toxicological-information.png)
Skin sensitisation
Administrative data
- Endpoint:
- skin sensitisation: in vivo (LLNA)
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Remarks:
- according to OECD and GLP
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 016
- Report date:
- 2016
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 429 (Skin Sensitisation: Local Lymph Node Assay)
- Qualifier:
- according to guideline
- Guideline:
- EU Method B.42 (Skin Sensitisation: Local Lymph Node Assay)
- GLP compliance:
- yes (incl. QA statement)
- Type of study:
- mouse local lymph node assay (LLNA)
Test material
- Reference substance name:
- Disodium 4,8-diamino-1,5-dihydroxy-9,10-dioxoanthracene-2,6-disulphonate
- EC Number:
- 220-678-3
- EC Name:
- Disodium 4,8-diamino-1,5-dihydroxy-9,10-dioxoanthracene-2,6-disulphonate
- Cas Number:
- 2861-02-1
- Molecular formula:
- C14H10N2O10S2.2Na
- IUPAC Name:
- disodium 4,8-diamino-1,5-dihydroxy-9,10-dioxo-9,10-dihydroanthracene-2,6-disulfonate
Constituent 1
In vivo test system
Test animals
- Species:
- mouse
- Strain:
- CBA/Ca
- Sex:
- female
- Details on test animals and environmental conditions:
- Housing: group
Cage Type: Makrolon Type II (pre-test) / III (main study), with wire mesh top
Bedding: granulated soft wood bedding
Feed: 2018C Teklad Global 18% protein rodent diet (certified), ad libitum
Water: tap water, ad libitum
Environment: temperature 22 ± 2°C, relative humidity approx. 45-65%, artificial light 6.00 a.m. - 6.00 p.m.
Study design: in vivo (LLNA)
- Vehicle:
- propylene glycol
- Concentration:
- 5, 10, and 25%
- No. of animals per dose:
- 4
- Details on study design:
- Vehicle and Dose Selection
A solubility experiment was performed according to the recommendations given by OECD 429. The highest test item concentration, which can be technically used, was a 25% suspension in PG. At higher concentrations, an applicable formulation of the test item was not achieved, not by the use of other vehicles.
To determine the highest non-irritant test concentration that at the same time did not induce signs of systemic toxicity, a pre-test was performed in two animals and stated in raw data and report. Two mice were treated by (epidermal) topical application to the dorsal surface of each ear with test item concentrations of 10 and 25% once daily each on three consecutive days. Prior to the first application of the test item and before sacrifice the body weight was determined. Clinical signs were recorded at least once daily. Eventual signs of local irritation were documented and a score was used to grade a possible erythema of the ear skin. Furthermore, prior to the first application of the test item (day 1), on day 3 and before sacrifice (day 6) the ear thickness was determined using a micrometer. Additionally, for both animals, the ears were punched after sacrifice (day 6) at the apical area using a biopsy punch (Ø 8 mm corresponding to 0.5 cm2) and were immediately pooled per animal and weighed using an analytical balance. Eventual ear irritation was considered to be excessive if an erythema of the ear skin of a score value ≥3 was observed at any observation time and/or if an increase in ear thickness of ≥25% was recorded on day 3 or day 6 (for detailed results see Appendix 1).
At the tested concentrations the animals did not show any signs of local skin irritation or systemic toxicity. Possible redness of the ear skin could not be determined within 1 hour after the first and third application, due to the colour of the test item.
Thus, the test item in the main study was assayed at 5, 10, and 25%. The highest concentration tested was the highest level that could be achieved whilst avoiding systemic toxicity and excessive local skin irritation as confirmed in the pre-experiment.
Experimental Design and Study Conduct
Determination of Ear Thickness
In the pre-test prior to the first and third application of the test item (study days 1 and 3) and prior to treatment with 3HTdR (study day 6), the ear thickness was determined using a micrometer.
Test Item Administration
Each test group of mice was treated by (epidermal) topical application to the dorsal surface of each ear with test item concentrations of 5, 10, and 25% in PG. The application volume, 25 µL/ear/day, was spread over the entire dorsal surface ( 8 mm) of each ear once daily for three consecutive days. A further group of mice (control animals) was treated with an equivalent volume of the relevant vehicle alone (control animals).
Administration of 3H-methyl-thymidine
Five days after the first topical application (day 6) 250 µL of phosphate-buffered saline containing 20.2 µCi of 3H-methyl thymidine (equivalent to 80.8 µCi/mL 3HTdR) were injected into each test and control mouse via the tail vein.
Terminal Procedure
Approximately five hours after treatment with 3HTdR all mice were euthanized by using CO2, which was, after harvesting of the lymph nodes, followed by cervical dislocation to ensure death. The draining lymph nodes were rapidly excised and pooled for each experimental group (8 nodes per group).
Preparation of Single Cell Suspensions
Single cell suspensions (in phosphate buffered saline) of pooled lymph node cells were prepared by gentle mechanical disaggregation through stainless steel gauze (200 µm mesh size). After washing two times with phosphate buffered saline (approx. 10 mL) the lymph node cells were resuspended in 5 % trichloroacetic acid (approx. 3 mL) and incubated at approximately +4 °C for at least 18 hours for precipitation of macromolecules.
Determination of cellular proliferation (incorporation of 3HTdR)
The precipitates were then resuspended in 5 % trichloroacetic acid (1 mL) and transferred to scintillation vials with 10 mL of scintillation liquid and thoroughly mixed. The level of 3HTdR incorporation was then measured in a -scintillation counter. Similarly, background 3HTdR levels were also measured in two 1 mL aliquots of 5 % trichloroacetic acid. The -scintillation counter expresses 3HTdR incorporation as the number of radioactive disintegrations per minute (DPM).
Determination of Ear Weights
In the pre-test and main experiment after the lymph nodes had been excised, both ears (left and right) of mice were punched at the apical area using a biopsy punch (Ø 8 mm corresponding to 0.5 cm2). For each animal both punches were immediately weighed (pooled per animal) using an analytical balance.
Observations
Clinical Observations
All animals were observed on a daily basis, including pre- and post-dose observations on days 1, 2 and 3. Any clinical signs of systemic toxicity, local skin irritation or signs of ill health during the study were recorded.
Ear thickness: In the pre-test, the ear thickness was determined prior to the first application (day 1), on day 3, and prior to sacrifice on day 6.
Ear weights: In the pre-test and main experiment, the ear weight was determined after sacrifice (biopsy punches will be taken from each ear).
Body Weights
The body weights were recorded on day 1 (prior to dosing) and prior to sacrifice (pre-test) or prior to treatment with 3HTdR (main experiment). - Positive control substance(s):
- hexyl cinnamic aldehyde (CAS No 101-86-0)
Results and discussion
- Positive control results:
- October 2016 (study 1792800): S.I. of 1.50, 3.84, and 11.76 were derived at tested concentrations of 5, 10, 25%, respectively and an EC3 value of 8.2% was calculated.
In vivo (LLNA)
Results
- Key result
- Parameter:
- EC3
- Remarks on result:
- not determinable
- Remarks:
- The EC3 value could not be calculated, since all S.I.´s are below the threshold value of 3.
Any other information on results incl. tables
Calculation and Results of Individual Data
Vehicle: PG
Test item concentration % |
Group |
Measurement DPM |
DPM-BGa) |
number of lymph nodes |
DPM per lymph nodeb) |
S.I. |
|||||||
--- |
BG I |
41 |
--- |
--- |
--- |
--- |
|||||||
--- |
BG II |
16 |
--- |
--- |
--- |
--- |
|||||||
0 |
1 |
8261 |
8232.5 |
8 |
1029.1 |
1.00 |
|||||||
5 |
2 |
6592 |
6563.5 |
8 |
820.4 |
0.80 |
|||||||
10 |
3 |
9926 |
9897.5 |
8 |
1237.2 |
1.20 |
|||||||
25 |
4 |
10041 |
10012.5 |
8 |
1251.6 |
1.22 |
1 = Control Group
2-4= Test Group
a) = The mean value was taken from the figures BG I and BG II
b) = Since the lymph nodes of the animals of a dose group were pooled, DPM/node was determined by dividing the measured value by the number of lymph nodes pooled
Calculation of the EC3 value
The EC3 value could not be calculated, since all S.I.´s are below the threshold value of 3.
Viability / Mortality
No deaths occurred during the study period.
Clinical Signs
No symptoms of local skin irritation at the ears of the animals and no signs of systemic toxicity were observed during the study period.Possible redness of the ear skin could not be determined within 1 hour after each application, due to the colour of the test item.
Body Weights
The body weight of the animals, recordedprior to the first application and prior to treatment with3HTdR, was within the range commonly recorded for animals of this strain and age.
Ear Weights
The measured ear weight of all animals treated was recorded on test day 6 (after necropsy). A relevant increase in ear weights was not observed.
Applicant's summary and conclusion
- Conclusions:
- The test item was not a skin sensitiser under the test conditions of this study.
- Executive summary:
In order to study a possible skin sensitising potential of the test item, three groups each of four female mice were treated once daily with the test item at concentrations of 5, 10, and 25% in PG by topical application to the dorsum of each ear for three consecutive days. The highest concentration tested was the highest concentration that could technically be achieved. A control group of four mice was treated with the vehicle (PG) only. Five days after the first topical application the mice were injected intravenously into a tail vein with radio-labelled thymidine (3H-methyl thymidine). Approximately five hours after intravenous injection, the mice were sacrificed, the draining auricular lymph nodes excised and pooled per group. Single cell suspensions of lymph node cells were prepared from pooled lymph nodes, which were subsequently washed and incubated with trichloroacetic acid overnight. The proliferative capacity of pooled lymph node cells was determined by the incorporation of3H-methyl thymidine measured in ab-scintillation counter.
All treated animals survived the scheduled study period and no signs of systemic toxicity or local skin irritation were observed. Possible redness of the ear skin could not be determined within 1 hour after each application, due to the colour of the test item. A statistically significant or biologically relevant increase in ear weight was not observed in any dose group in comparison to the vehicle control group.
A test item is regarded as a sensitiser in the LLNA if the exposure to one or more test concentration resulted in a 3-fold or greater increase in incorporation of3HTdR compared with concurrent controls, as indicated by the Stimulation Index (S.I.). The estimated concentration of test item required to produce a S.I. of 3 is referred to as the EC3 value.
In this study Stimulation Indices of 0.80, 1.20, and 1.22 were determined with the test item at concentrations of 5, 10, and 25% in PG. The EC3 value could not be calculated, since none of the tested concentrations induced a S.I. greater than the threshold value of 3.
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.
![ECHA](/o/diss-blank-theme/images/factsheets/A-REACH/factsheet/echa_logo.png)