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EC number: 233-265-8 | CAS number: 10102-05-3
- 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 (non-LLNA)
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 21 January 2003 to 13 March 2003
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Guideline study (OECD, EU, EPA), to GLP, on the dihydrate, with minor deviations (humidity) that are not considered to affect the validity of the study.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 003
- Report date:
- 2003
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 406 (Skin Sensitisation)
- Deviations:
- yes
- Remarks:
- deviations form the minimum humidity level recommended, which were not considered to have affected the study integrity.
- Qualifier:
- according to guideline
- Guideline:
- EU Method B.6 (Skin Sensitisation)
- Deviations:
- yes
- Remarks:
- deviations form the minimum humidity level recommended, which were not considered to have affected the study integrity.
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 870.2600 (Skin Sensitisation)
- Deviations:
- yes
- Remarks:
- deviations form the minimum humidity level recommended, which were not considered to have affected the study integrity.
- Qualifier:
- according to guideline
- Guideline:
- other: Japanese MAFF
- Deviations:
- yes
- Remarks:
- deviations form the minimum humidity level recommended, which were not considered to have affected the study integrity.
- GLP compliance:
- yes
- Type of study:
- guinea pig maximisation test
- Justification for non-LLNA method:
- Study conducted in 2003
Test material
- Reference substance name:
- Palladium dinitrate dihydrate
- IUPAC Name:
- Palladium dinitrate dihydrate
- Reference substance name:
- Palladium(II) nitrate dihydrate
- Cas Number:
- 32916-07-7
- Molecular formula:
- 2NO3.Pd.2H2O
- IUPAC Name:
- Palladium(II) nitrate dihydrate
- Test material form:
- solid: particulate/powder
- Remarks:
- migrated information: powder
- Details on test material:
- - Name of test material (as cited in study report): Palladium(II)nitrate dihydrate
- Substance type: orange-brown powder
- Physical state: solid
- Analytical purity: 40.1% (+/- 0.1%) palladium
- Impurities (identity and concentrations): no data [but see gentox study, with same batch no]
- Purity test date: no data [see gentox study, with same batch no.]
- Lot/batch No.: 2403/02-02
- Expiration date of the lot/batch: 21 October 2003
- Stability under test conditions: no data
- Storage condition of test material: room temperature in dark
- Other: [Please note that the dihydrate has a different CAS RN (32916-07-7) to the anhydrous form (10102-05-3)]
Constituent 1
Constituent 2
In vivo test system
Test animals
- Species:
- guinea pig
- Strain:
- Dunkin-Hartley
- Sex:
- female
- Details on test animals and environmental conditions:
- TEST ANIMALS
- Source: Charles River Deutschland
Kisslegg
Germany
- Age at study initiation: about 5 weeks
- Weight at study initiation: 310-355 g
- Housing: on purified sawdust
- Diet (e.g. ad libitum): conventional, ad libitum
- Water (e.g. ad libitum): tap water, ad libitum
- Acclimation period:at least 5 days
ENVIRONMENTAL CONDITIONS
- Temperature (°C): 21 ± 3
- Humidity (%): 30-70
- Air changes (per hr): 15
- Photoperiod (hrs dark / hrs light): 12/12
Study design: in vivo (non-LLNA)
Inductionopen allclose all
- Route:
- intradermal and epicutaneous
- Vehicle:
- water
- Concentration / amount:
- 0.1% for injection and 2% epidermal application (induction)
2% for epidermal application (challenge)
Challengeopen allclose all
- Route:
- epicutaneous, occlusive
- Vehicle:
- water
- Concentration / amount:
- 0.1% for injection and 2% epidermal application (induction)
2% for epidermal application (challenge)
- No. of animals per dose:
- 10 in test group
5 in control group - Details on study design:
- RANGE FINDING TESTS: three animals each injected with either 0.1 and 0.2%, or 0.5 and 1%, or 2 and 5%. Examined 24 and 48 hr later
b) two animals each dose conbination dosed topically with either 0.5 and 1%, or 2 and 5%. Assessed at 24 and 48 hr
MAIN STUDY
A. INDUCTION EXPOSURE
- No. of exposures: 2 (intradermal injection followed by topical application to the injection site one week later. Three pairs of simultaneous injections were given as follows: Freunds complete adjuvant; 0.1% test substance; test substance emulsified in the adjuvant.
- Exposure period: 48 hr - dermal application
- Test groups: 1 test and 1 control group
- Control group: treated in same way but without the test substance
- Site: scapular region, each side of the midline
- Frequency of applications: once
- Duration: 21 days
- Concentrations: 0.1% for injection and 2% epidermal application
B. CHALLENGE EXPOSURE
- No. of exposures: 1
- Day(s) of challenge: Day 22
- Exposure period: 24 hr
- Test groups: 1 test and 1 control group
- Control group: treated in same way
- Site: flank
- Concentrations: 2%
- Evaluation (hr after challenge): 24 and 48 hr after removal of the dressing
OTHER: - Challenge controls:
- Treated with 2%
- Positive control substance(s):
- no
- Remarks:
- Not as part of study but routine checked (last check October/November 2002)
Study design: in vivo (LLNA)
- Positive control substance(s):
- hexyl cinnamic aldehyde (CAS No 101-86-0)
- Statistics:
- no
Results and discussion
In vivo (non-LLNA)
Resultsopen allclose all
- Reading:
- 1st reading
- Hours after challenge:
- 24
- Group:
- test chemical
- Dose level:
- 2%
- No. with + reactions:
- 0
- Total no. in group:
- 10
- Clinical observations:
- No systemic toxicity
- Remarks on result:
- other: Reading: 1st reading. . Hours after challenge: 24.0. Group: test group. Dose level: 2%. No with. + reactions: 0.0. Total no. in groups: 10.0. Clinical observations: No systemic toxicity.
- Reading:
- 2nd reading
- Hours after challenge:
- 48
- Group:
- test chemical
- Dose level:
- 2%
- No. with + reactions:
- 0
- Total no. in group:
- 10
- Clinical observations:
- No systemic toxicity
- Remarks on result:
- other: Reading: 2nd reading. . Hours after challenge: 48.0. Group: test group. Dose level: 2%. No with. + reactions: 0.0. Total no. in groups: 10.0. Clinical observations: No systemic toxicity.
- Reading:
- 1st reading
- Hours after challenge:
- 24
- Group:
- negative control
- Dose level:
- 2%
- No. with + reactions:
- 0
- Total no. in group:
- 5
- Clinical observations:
- No systemic toxicity
- Remarks on result:
- other: Reading: 1st reading. . Hours after challenge: 24.0. Group: negative control. Dose level: 2%. No with. + reactions: 0.0. Total no. in groups: 5.0. Clinical observations: No systemic toxicity.
- Reading:
- 2nd reading
- Hours after challenge:
- 48
- Group:
- negative control
- Dose level:
- 2%
- No. with + reactions:
- 0
- Total no. in group:
- 5
- Clinical observations:
- No systemic toxicity
- Remarks on result:
- other: Reading: 2nd reading. . Hours after challenge: 48.0. Group: negative control. Dose level: 2%. No with. + reactions: 0.0. Total no. in groups: 5.0. Clinical observations: No systemic toxicity.
Applicant's summary and conclusion
- Interpretation of results:
- not sensitising
- Remarks:
- Migrated information
- Conclusions:
- Palladium dinitrate dihydrate failed to induce skin sensitisation in an OECD Test Guideline 406 GPMT, to GLP, in which a group of ten guinea pigs were dermally challenged with 2% of the test compound following a two stage induction with 0.1% by intradermal injection and 2% applied topically.
- Executive summary:
The ability of palladium dinitrate dihydrate to induce contact sensitisation was assessed in a OECD Test Guideline 406 guinea pig maximisation test (GPMT), conducted to GLP, using groups of 10 test and 5 control females.
Animals were induced with 0.1% by intradermal injection, followed one week later by a second induction by topical application of 2% of the test substance under a 48 -hr occlusive patch. Control animals were similarly treated but without the test substance. A challenge dose of 2% was applied under an occlusive patch for 24 hr, three weeks after the start of induction to both test and control animals. These doses were selected after a preliminary range-finding study to determine irritation. Scoring of the treated areas was carried out 24 and 48 hr after removal of the patches.
No positive reactions were observed in the test or control animals on examination at 24 and 48 hr after removal of the challenge patches.
Overall, palladium dinitrate dihydrate was not a contact sensitiser in a reliable GPMT, andthus would not require classification as a skin sensitiser according to EU CLP criteria (EC 1272/2008).
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