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EC number: 221-576-1 | CAS number: 3148-73-0
- 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
Skin sensitisation
Administrative data
- Endpoint:
- skin sensitisation: in vivo (LLNA)
- Type of information:
- experimental study
- Adequacy of study:
- supporting study
- Study period:
- 2004-03-08 to 2004-03-23 (experimental phase)
- Reliability:
- 3 (not reliable)
- Rationale for reliability incl. deficiencies:
- other: see 'Remark'
- Remarks:
- The study is a screening study which did not formally follow a guideline method, and was not formally performed under audited GLP, however, the laboratory facilities were operated according to GLP. The purity of the test material was not reported. The documentation in the report was very limited. Although the results are considered valid, the screening study itself cannot be considered formally reliable due to the lack of formal guideline, quality assurance, and very limited documentation.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 004
- Report date:
- 2004
Materials and methods
Test guideline
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- OECD Guideline 429 (Skin Sensitisation: Local Lymph Node Assay)
- Deviations:
- no
- Remarks:
- relevant deviations from SOP specifications were not reported
- Principles of method if other than guideline:
- The study was performed according to the internal standard operational procedure 595.12 of the laboratory, but no details on this SOP are given in the report. The principles of the internal SOP are to the greatest extent similar to those described in OECD Testing Guideline No. 429 (Mouse Local Lymph Node Assay).
- GLP compliance:
- no
- Type of study:
- mouse local lymph node assay (LLNA)
Test material
- Reference substance name:
- N,N'-diacetylhydrazine
- EC Number:
- 221-576-1
- EC Name:
- N,N'-diacetylhydrazine
- Cas Number:
- 3148-73-0
- Molecular formula:
- C4H8N2O2
- IUPAC Name:
- N'-acetylacetohydrazide
- Test material form:
- not specified
Constituent 1
In vivo test system
Test animals
- Species:
- mouse
- Strain:
- other: CBA/Ca
- Sex:
- not specified
- Details on test animals and environmental conditions:
- not reported
Study design: in vivo (LLNA)
- Vehicle:
- dimethyl sulphoxide
- Concentration:
- 2.5, 5 and 10% w/w
- No. of animals per dose:
- four animals
- Details on study design:
- RANGE FINDING TESTS:
- Compound solubility: not reported
- Irritation: not reported
- Lymph node proliferation response: not reported
- Other responses: clinical observations, body weight change, mortality
MAIN STUDY
- Criteria used to consider a positive response: stimulation index
- Vehicle control: four animals treated with dimethyl sulphoxide
TREATMENT PREPARATION AND ADMINISTRATION:
- Vehicle: dimethyl sulphoxide
- Application/site: topical on the dorsal surface of ears
- Application volumes: 25 µL per ear - Statistics:
- not reported
Results and discussion
- Positive control results:
- no positive control tested
In vivo (LLNA)
Resultsopen allclose all
- Parameter:
- SI
- Remarks on result:
- other: Vehicle: not applicable 2.5% w/w in dimethyl sulphoxide: 1.01 5% w/w in dimethyl sulphoxide: 1.43 10% w/w in dimethyl sulphoxide: 0.78
- Parameter:
- other: disintegrations per minute (DPM)
- Remarks on result:
- other: Vehicle: 7571.75 DPM, 946.47 DPM/Node 2.5% w/w in dimethyl sulphoxide: 7665.04 DPM, 958.13 DPM/Node 5% w/w in dimethyl sulphoxide: 10815.94 DPM, 1351.99 DPM/Node 10% w/w in dimethyl sulphoxide: 5933.59 DPM, 741.70 DPM/Node
Any other information on results incl. tables
No signs of systemic toxicity or body weight changes and no mortality were observed in the screening test applying a solution of the test substance in dimethyl sulphoxide at a concentration of 10% w/w to the skin surface of the ears.
Applicant's summary and conclusion
- Interpretation of results:
- GHS criteria not met
- Conclusions:
- The test substance was considered as a non-sensitiser under the conditions of the Mouse Local Lymph Node Assay. Although the result is considered to be valid, due to the lack of formal guideline and quality assurance, and very limited documentation, it must be regarded as not being reliable.
- Executive summary:
The potential for skin sensitisation of the test substance was investigated in a non-GLP mouse local lymph node assay in CBA/Ca mice that was conducted according to principles similar to those given in OECD Testing Guideline No. 429. Following a preliminary sighting test at which there were no deaths or signs of systemic toxicity at a concentration of 10% w/w, three groups, each of four animals, were treated with 50 µL of the test material (25 µL per ear) as a solution in dimethyl sulphoxide at concentrations of 2.5%, 5% and 10% w/w. A further group of four animals was treated with dimethyl sulphoxide alone. The Stimulation Indeces expressed as the mean radioactive incorporation for each treatment group divided by the mean radioactive incorporation of the vehicle group were 1.01, 1.43 and 0.78 for the groups treated with concentrations of 2.5, 5 and 10% w/w, respectively and hence below the threshold of 3.0 indicating a positive result.
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