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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 257-471-2 | CAS number: 51850-20-5
- 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
Developmental toxicity / teratogenicity
Administrative data
- Endpoint:
- developmental toxicity
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 18 September 2014 - 30 June 2015
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Guideline study, conducted according to GLP.
Cross-reference
- Reason / purpose for cross-reference:
- reference to other study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 015
- Report date:
- 2015
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- other: OECD Guideline 422 (Combined repeated dose and reproduction / developmental screening)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Limit test:
- no
Test material
- Reference substance name:
- Dihydrogen hexahydroxyplatinate
- EC Number:
- 257-471-2
- EC Name:
- Dihydrogen hexahydroxyplatinate
- Cas Number:
- 51850-20-5
- Molecular formula:
- H6O6Pt.2H
- IUPAC Name:
- hexahydroxyplatinate(2-)
- Test material form:
- solid: particulate/powder
- Remarks:
- migrated information: powder
- Details on test material:
- - Name of test material (as cited in study report): dihydrogen hexahydroxyplatinate.
- Substance type: powder.
- Physical state: solid.
- Analytical purity: no data.
- Impurities (identity and concentrations): no data.
- Composition of test material, percentage of components: 64.83% platinum w/w.
- Isomers composition: not applicable.
- Purity test date: 28 May 2013.
- Lot/batch No.: CZ0185.
- Expiration date of the lot/batch: June 2018.
- Stability under test conditions: 5 years.
- Storage condition of test material: At +10 to +25 deg C, in a tightly closed container, protected from direct sunlight.
Constituent 1
Test animals
- Species:
- rat
- Strain:
- Crj: CD(SD)
- Details on test animals or test system and environmental conditions:
- TEST ANIMALS
- Source: Charles River Laboratories, Research Models and Services, Germany GmbH, Sandhofer Weg 7, 97633 Sulzfeld, Germany.
- Age at study initiation: 67 days (at first test item administration).
- Weight at study initiation: males: 326.4 - 402.7 g; females: 189.4 - 246.0 g (at first test item administration).
- Fasting period before study: no data.
- Housing: animals were housed singly, except during the mating period.
- Diet (e.g. ad libitum): certified commercial diet, offered ad libitum.
- Water (e.g. ad libitum): tap water, offered ad libitum.
- Acclimation period: 8 days.
ENVIRONMENTAL CONDITIONS
- Temperature (°C): room temperature of 22degC +/- 3degC (maximum range).
- Humidity (%): relative humidity of 55% +/- 15% (maximum range).
- Air changes (per hr): no data.
- Photoperiod (hrs dark / hrs light): 12 hours dark/12 hours light, about 150 lux.
IN-LIFE DATES:
From: July 2014.
To: 23 October 2014 (males); 14 November 2014 (females).
Administration / exposure
- Route of administration:
- oral: gavage
- Vehicle:
- corn oil
- Details on exposure:
- PREPARATION OF DOSING SOLUTIONS: test item formulations were prepared once weekly and stored in a tightly closed container at room temperature (+10 to +25 degC) until use.
DIET PREPARATION
- Rate of preparation of diet (frequency): not applicable.
- Mixing appropriate amounts with (Type of food): not applicable.
- Storage temperature of food: not applicable.
VEHICLE
- Justification for use and choice of vehicle (if other than water): the test substance was found to be unstable in water and other aqueous vehicles. Stability for 7 days in corn oil was demonstrated in an identity and stability investigation, and thus corn oil was taken forward as the vehicle for this study.
- Concentration in vehicle: 20, 60 or 200 mg test item/mL vehicle.
- Amount of vehicle (if gavage): 5 mL/kg bw/day.
- Lot/batch no. (if required): Batch nos. 13249003 and 13249006, Caesar & Loretz GmbH, 40721 Hilden, Germany.
- Purity: no data. - Analytical verification of doses or concentrations:
- yes
- Details on analytical verification of doses or concentrations:
- Samples of approximately 10 mL were collected once weekly, at the time of preparation of the formulation, and analysed for homogeneity and concentration.
- Details on mating procedure:
- - M/F ratio per cage: 1:1
- Length of cohabitation: until pregnancy occurred, or two weeks.
- Proof of pregnancy: presence of sperm or a vaginal plug referred to as the day of conception (day 0 of pregnancy).
- After successful mating each pregnant female was caged (how): except during mating, animals were housed singly. - Duration of treatment / exposure:
- Males were dosed from test days 1-35 (inclusive), including 2 weeks prior to mating, the mating period and approximately 2 weeks post-mating. Females were dosed from test day 1 (2 weeks prior to mating), throughout mating and gestation, until day 3 post-partum or the day before sacrifice (from test day 41 for the first sacrificed females to test day 58 for the last sacrificed female).
- Frequency of treatment:
- Once daily.
- Duration of test:
- Final treatment was administered on test day 58.
- No. of animals per sex per dose:
- 12.
- Control animals:
- yes, concurrent vehicle
- Details on study design:
- - Dose selection rationale: dose levels were selected based a 14-day dose range finding study conducted at the same testing laboratory. In the dose range finding study, male and female rats were treated with 1000 mg test item/kg bw/day. No animal died prematurely, there were no test item-related adverse effects, and no test item-related changes noted at necropsy.
- Rationale for animal assignment (if not random): computer-generated randomisation programme.
- Rationale for selecting satellite groups: not applicable.
- Post-exposure recovery period in satellite groups: not applicable.
- Section schedule rationale (if not random): not applicable.
Examinations
- Maternal examinations:
- CAGE SIDE OBSERVATIONS: Yes
- Time schedule: before and after dosing and, additionally, regularly throughout the working day (7:00 to 15:45 on Monday to Friday; 7:00 to 11:00 with a final check at 15:00 on Saturday and Sunday).
- Cage side observations included any behavioural changes, signs of illness or reaction to treatment. Skin/fur, eyes, mucous membranes, respiratory and circulatory systems, somatomotor activity and behaviour patterns were recorded, together with the onset, intensity and duration of any signs observed.
DETAILED CLINICAL OBSERVATIONS: Yes
- Time schedule: once weekly, once before the first administration and once a week thereafter.
- Signs recorded included: changes in skin, fur, eyes, mucous membranes; occurrence of secretions, excretions and autonomic activity; changes in gait, posture and response to handling; behavioural changes.
BODY WEIGHT: Yes
- Time schedule for examinations: males and females were weighed on the first day of dosing, weekly thereafter, and at termination. During gestations, females were weighed on days 0, 7, 14 and 20, within 24 hours of parturition (day 1 post-partum), and day 4 post-partum.
FOOD AND WATER CONSUMPTION:
- Food consumption for each animal determined: Yes.
- Food intake per animal was determined using the total amount of food given to and left by each animal.
- Drinking water consumption for each animal determined: Yes, by daily visual appraisal throughout the study.
SACRIFCE
Dams with offspring were sacrificed on day 4 post-partum.
GROSS NECROPSY
- Adult animals were examined macroscopically at sacrifice for any abnormalities or pathological changes, with particular attention given to the reproductive organs.
- The number of implantation sites and corpora lutea were recorded.
HISTOPATHOLOGY / ORGAN WEIGHTS
- The mammary glands, ovaries, uterus (including cervix and oviducts), vagina and all organs showing macroscopic lesions of all adult animals were preserved. The weights of the ovaries and uterus (including cervix and oviducts) were recorded before fixation. - Ovaries and uterine content:
- The ovaries and uterine content were examined after termination: Ovaries were examined histopathologically; uterine content not examined as dams only sacrificed post-partum.
Examinations included:
- Gravid uterus weight: No
- Number of corpora lutea: Yes
- Number of implantation sites: Yes
- Number of early/late resorptions: No data; pre- and post-implantation loss were calculated from the number of corpora lutea, implantations and living foetuses. - Fetal examinations:
- - External examinations: Yes: [all per litter]
- Soft tissue examinations: No data
- Skeletal examinations: No data
- Head examinations: No data - Statistics:
- Analysis of normal distribution and homogeneity of variances was performed using the Shapiro-Wilks test and the Bartlett test.
One-way analysis of variance was performed using Anova or the Kruskal-Wallis test.
Intergroup comparisons, in the case of significant differences, were made using the Dunnett test.
Statistical analyses of non-parametrical data were performed using Fisher's exact test or the Chi-squared test. - Indices:
- Birth Index [%] = (Total number of pups born (alive + dead)/Number of implantation scars) x 100
Live Birth Index [%] = (Number of pups alive on day 0/1 of lactation/Total number of pups (alive + dead)) x 100
Survival Index [%] = (Number of pups alive on day 4/Number of pups alive on day 0/1) x 100
Pre-implantation loss [%] = ((corpora lutea – implantations)/corpora lutea) x 100
Post-implantation loss [%] = ((implantations - living neonates)/implantations) x 100 - Historical control data:
- No data.
Results and discussion
Results: maternal animals
Maternal developmental toxicity
- Details on maternal toxic effects:
- Maternal toxic effects:no effects
Details on maternal toxic effects:
There was no test item-related increase in mortality, no clinical signs of toxicity, changes in body weight or food consumption, or altered haematological, clinical chemistry or neurobehavioural parameters. Treatment also had no effect on the measured reproductive or fertility parameters.
Effect levels (maternal animals)
- Dose descriptor:
- NOAEL
- Effect level:
- 1 000 mg/kg bw/day (actual dose received)
- Based on:
- test mat.
- Basis for effect level:
- other: No developmental toxicity seen at the highest tested dose
Results (fetuses)
- Fetal body weight changes:
- no effects observed
- Description (incidence and severity):
- No differences were noted between the control and the treatment groups for the mean body weight of the pups and the mean total litter weight of the dams.
Migrated Data from removed field(s)
Field "Fetal/pup body weight changes" (Path: ENDPOINT_STUDY_RECORD.DevelopmentalToxicityTeratogenicity.ResultsAndDiscussion.ResultsFetuses.FetalPupBodyWeightChanges): not examined - Reduction in number of live offspring:
- not examined
- Changes in sex ratio:
- not examined
- Changes in litter size and weights:
- not examined
- Changes in postnatal survival:
- not examined
- External malformations:
- no effects observed
- Description (incidence and severity):
- The external macroscopic examination after sacrifice revealed no test item-related gross abnormalities.
- Skeletal malformations:
- not examined
- Visceral malformations:
- not examined
- Other effects:
- not specified
- Details on embryotoxic / teratogenic effects:
- Embryotoxic / teratogenic effects:no effects
Details on embryotoxic / teratogenic effects:
No gross abnormalities were observed during macroscopic external examination of control pups or those from treated dams.
Effect levels (fetuses)
- Dose descriptor:
- NOAEL
- Effect level:
- 1 000 mg/kg bw/day (actual dose received)
- Based on:
- test mat.
- Sex:
- male/female
- Basis for effect level:
- other: No embryotoxicity/teratogenicity effects seen at the highest tested dose
Fetal abnormalities
- Abnormalities:
- not specified
Overall developmental toxicity
- Developmental effects observed:
- not specified
Applicant's summary and conclusion
- Conclusions:
- In an OECD Test Guideline 422 combined repeated dose and reproductive/developmental toxicity screening study in rats, involving the gavage administration of dihydrogen hexahydroxyplatinate for at least 35 days (including, for females, throughout mating, gestation and up to post-natal day 3), no signs of developmental toxicity or any adverse effects on pups were observed. The study NOAEL for developmental toxicity/embryotoxicity was the highest tested dose (1000 mg/kg bw/day).
- Executive summary:
In a combined repeated dose toxicity and reproductive/developmental toxicity screening study, conducted according to OECD Test Guideline 422 and to GLP, CD rats (12/sex/group) were orally administered dihydrogen hexahydroxyplatinate by stomach tube (gavage) at doses of 0, 100, 300 or 1000 mg/kg bw/day. Males were dosed for 35 days (2 weeks pre-mating, during the mating period and for approximately 2 weeks post-mating). Females were dosed for 14 days pre-mating, through mating, gestation and up to post-partum day 3 (test day 41-58).
There were no reported clinical signs of toxicity in the dams, and no gross pathological changes to the pups that were attributed to treatment. The study NOAEL for developmental toxicity was the highest tested dose (1000 mg/kg bw/day).
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.