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EC number: - | CAS number: -
- 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
Repeated dose toxicity: oral
Administrative data
- Endpoint:
- short-term repeated dose toxicity: oral
- Type of information:
- migrated information: read-across based on grouping of substances (category approach)
- Adequacy of study:
- weight of evidence
- Study period:
- Nov - Dec 1992
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: see 'Remark'
- Remarks:
- GLP - Guideline study. According to the ECHA guidance document "Practical guide 6: How to report read-across and categories (March 2010)", the reliability was changed from RL1 to RL2 to reflect the fact that this study was conducted on a read-across substance.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 993
- Report date:
- 1993
Materials and methods
Test guideline
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- OECD Guideline 407 (Repeated Dose 28-Day Oral Toxicity Study in Rodents)
- Deviations:
- no
- GLP compliance:
- yes
- Limit test:
- no
Test material
- Details on test material:
- - Name of test material (as cited in study report): only trade name given
- Substance type: pentaerythritol ester, tetrasubstituted
- Physical state: pale yellow liquid
- Analytical purity: 98%
- Composition of test material, percentage of components: pentaerythritol tetrasubstituted with fatty acids (C7: 52%; C8 branched: 25%; C9: 10%; C10: 13%)
- Stability under test conditions: 5 weeks
Constituent 1
Test animals
- Species:
- rat
- Strain:
- other: Alpk:APfSD
- Sex:
- male/female
- Details on test animals or test system and environmental conditions:
- TEST ANIMALS
- Source: Zeneca Pharmaceuticals, Alderly Park, Macclesfield, Cheshire, UK
- Age at study initiation: 28 d
- Weight at study initiation: 148.45 g (males); 122.6 g (females)
- Housing: sexes separately, five per cage, cages had measurements of 26.5 x 50.0 x 20.0 cm and were constructed of stainless steel mesh with one solid side.
- Diet: CT1 diet; Special Diets Services Limited, Witham, Essex, UK
- Water: tap water, ad libitum
- Acclimation period: approx. 1 week
ENVIRONMENTAL CONDITIONS
- Temperature (°C): 19-23
- Humidity (%): 45-65 (71 at one occasion)
- Air changes (per hr): 25-30
- Photoperiod (hrs dark / hrs light): 12 / 12
IN-LIFE DATES: From: November 1992 To: December 1992
Administration / exposure
- Route of administration:
- oral: feed
- Vehicle:
- other: in diet
- Details on oral exposure:
- PREPARATION OF DOSING SOLUTIONS: All diet preparations were based on CT1 diet (Special Diets Services Limited, Witham, Essex, UK). They were prepared by grinding the appropriate amount of test substance with 1 kg of milled CT1 diet. This premix was then added to 14 kg of diet and mixed thoroughly with a Pharma Blender Model PMA 100S (T K Filder).
DIET PREPARATION
- Rate of preparation of diet (frequency): 15 kg batches
- Mixing appropriate amounts with (Type of food): CT1 diet (Special Diets Services Limited, Witham, Essex, UK)
- Storage temperature of food: - 20°C, stored at room temperature for usage up to 14 days - Analytical verification of doses or concentrations:
- yes
- Details on analytical verification of doses or concentrations:
- Chemical stability was determined for diet preparations over a period of 5 weeks following storage at room temperatureT or at -20°C.
Samples were extracted by chemical shaking with ethyl acetate. The supernatant was diluted with ethyl acetate to give solutions containing appropriate concentrations of the test substance. Extracts were analysed by gas chromatography using flame ionisation detection. The extract concentration was calculated by reference to data from a standard containing a known concentration. - Duration of treatment / exposure:
- daily
- Frequency of treatment:
- 28 d
Doses / concentrationsopen allclose all
- Remarks:
- Doses / Concentrations:
1000 ppm, 5000 ppm, 12500 ppm
Basis:
nominal in diet
- Remarks:
- Doses / Concentrations:
112, 562, 1450 mg/kg bw/d
Basis:
other: actual ingested for males
- Remarks:
- Doses / Concentrations:
119, 586, 1613 mg/kg bw/d
Basis:
other: actual ingested for females
- No. of animals per sex per dose:
- 5
- Control animals:
- yes
- Details on study design:
- - Dose selection rationale: Based on results of preliminary feeding studies
Examinations
- Observations and examinations performed and frequency:
- CAGE SIDE OBSERVATIONS: Yes
- Time schedule: Daily
- Cage side observations checked: changes in clinical condition and behaviour and significant changes were recorded.
DETAILED CLINICAL OBSERVATIONS: Yes
- Time schedule: on Days 8, 15, 22, 29
- observations included, but were not limited to the assessment of autonomic function (e.g. lacrimation, salivation, piloerection, exophthalmus, urination, defecation, pupillary function, ptosis); description, incidence and severity of any convulsions, tremors, abnormal motor function, alteration in respiration, reactivity to stimuli, changes in the level of arousal, sensorimotor responses
BODY WEIGHT: Yes, measurement in replicate order immediately before feeding and at the same day once a week until termination.
FOOD CONSUMPTION AND COMPOUND INTAKE:
- Food consumption for each animal determined and mean daily diet consumption calculated as mg food/kg body weight: Yes, on a weekly basis
- Compound intake calculated as time-weighted averages from the consumption and body weight gain data: Yes
HAEMATOLOGY: Yes
At termination, all rats were bled by cardiac puncture and samples were collected. Parameters determined: Hemoglobin, red cell count, haematocrit, mean cell volume, mean cell haemoglobin, mean cell haemoglobin concentration, platelet count, white blood cell count, neutrophil count, lymphocyte count, monocyte count, eosinophil count, prothrombin time and kaolin-cephalin time
CLINICAL CHEMISTRY: Yes
At termination, all rats were bled by cardiac puncture and samples were collected. Parameters determined: Albumin, total protein, cholesterol, triglycerides, urea, creatinine, glucose, total bilirubin and alkaline phosphatase, plasma gamma-glutamyl transferase, plasma alanine aminotransferase, plasma aspartate aminotransferase, plasma creatine kinase, plasma sodium, plasma potassium, plasma chloride, plasma calcium and plasma phosphorus
NEUROBEHAVIOURAL EXAMINATION: Yes
- Time schedule for examinations: on Days 8, 15, 22, 29
- Dose groups that were examined: All
- Battery of functions tested: sensory activity / grip strength - Sacrifice and pathology:
- GROSS PATHOLOGY: Yes
HISTOPATHOLOGY: Yes (adrenals, aorta, bladder, bone and bone marrow (femur), brain, caecum, colon, cervical lymph node, cervix, colon, duodenum, epididymis, eye and harderian gland, heart, ileum, jejunum, kidney, liver, lungs, mammary gland, mesenteric lymph node, nasal passages, oesophagus, oral cavity, ovaries, pancreas, parathyroid glad, pituary gland, prostate gland, rectum, salivary glands, sciatic nerve, seminal vesicles, skin, spinal chord, spleen, sternum, stomach, testes, thymus, thyroid gland, trachea, uterus, voluntary muscle) - Statistics:
- Bodyweights were considered by analysis of covariance on initial body weight, separately for males and females.
Time to tail flick and fore and hindlimb grip strength at weeks 2, 3, 4 and 5 were considered by analysis of variance, separately for both sexes.
Haematological and clinical blood parameters were considered by analysis of variance.
Organ weights were considered by analysis of variance and covariance on final body weight separately for both sexes.
Results and discussion
Results of examinations
- Clinical signs:
- no effects observed
- Mortality:
- no mortality observed
- Body weight and weight changes:
- no effects observed
- Food consumption and compound intake (if feeding study):
- no effects observed
- Haematological findings:
- effects observed, treatment-related
- Description (incidence and severity):
- reduction in haemoglobin and haematocrit (males), reductions in haemoglobin, haematocrit and in white blood cell count (females).
- Clinical biochemistry findings:
- effects observed, treatment-related
- Description (incidence and severity):
- minor reductions in plasma cholesterol, triglyceride, total protein levels and plasma alanine transferase activities in males
- Behaviour (functional findings):
- no effects observed
- Organ weight findings including organ / body weight ratios:
- effects observed, treatment-related
- Description (incidence and severity):
- increased kidney weights (males), slightly increased kidney weights (females), increased liver weights (males/females) in 5000 and 12500 ppm groups
- Gross pathological findings:
- no effects observed
- Histopathological findings: non-neoplastic:
- effects observed, treatment-related
- Description (incidence and severity):
- kidney: increased tubular hyaline droplet formation, tubular basophilia, granular cast formation (males). liver: minimal hepatocyte hypertrophy in 4/5 male rats
- Histopathological findings: neoplastic:
- no effects observed
- Details on results:
- DIET ANALYSIS:
All diets prepared were found to be within 4% of the target concentration. The homogeneity of the test material in the diet, determined at 1000 and 12500 ppm inclusion levels was within 2 % of the overall mean concentration for both levels. Chemical stability of the test material, assessed at the 1000 and 12500 ppm inclusion levels stored at room temperature or at -20 °C was satisfactory over the period of use.
Dose rates (based on nominal dietary levels) were highest at the start of the study and declined rapidly during the period of rapid growth to week 4.
MORTALITY
There were no mortalities.
FUNCTIONAL OBSERVATION BATTERY
A slightly reduced splay reflex was observed in one female of the 1000 ppm group (on days 29 and 30), in one male of the 5000 ppm group (on day 29) and in one male of the 12.500 ppm group (on day 29). As isolated observations, these were considered to be incidental.
There were no differences in time to tail flick in either sex which could be attributed to treatment. The statistically significant increase in time to response observed on day 22 for males (5000 ppm) and day 8 for females (1000 ppm) were considered to be incidental to treatment in the absence of similar changes at higher dose levels.
There was no evidence of any treatment related effects on forelimb or hindlimb grip strength.
Any other statistically significant changes were considered spurious and unrelated to treatment with the test material.
BODY WEIGHT AND WEIGHT GAIN
There were no statistically significant effects on body weight and all final bodyweights were within 3% of the respective controls, after adjusting for initial weight differences.
FOOD CONSUMPTION
Food consumption in all treated groups remained similar to, or exceeded that, of the respective control group throughout the study.
HAEMATOLOGY
There were statistically significant reductions in haemoglobin and haematocrit at 12.500 ppm in male rats. Statistically significant reductions in haemoglobin and haematocrit were seen in females at 1000 and 5000 ppm and in white blood cell count at 1000 ppm. In the absence of a coherent dose-response relationship, these differences were considered incidental to treatment.
Any other statistically significant changes were considered spurious and unrelated to treatment with the test material.
CLINICAL CHEMISTRY
There were minor reductions in plasma cholesterol, triglyceride and total protein levels and plasma alanine transferase activities in males at 12500 ppm compared to controls. Any other statistically significant changes were considered spurious and unrelated to treatment with the test material.
ORGAN WEIGHTS
Kidney weights adjusted for body weight were statistically significant increased in males at 5000 and 12500 ppm. All the females in the treatment groups had slightly raised kidney weights compared to control, but none achieved statistical significance, and there was no evidence of a coherent dose response relationship.
Liver weights adjusted for body weight were statistically significant increased in both sexes at 12500 ppm and in males at 5000 ppm.
Any other statistically significant changes were considered spurious and unrelated to treatment with the test material.
PATHOLOGY:
Macroscopic findings:
No treatment-related macroscopic findings were apparent at the end of the study.
HISTOPATHOLOGY:
Microscopic findings:
Treatment related findings were present in the kidney of male rats from all dose groups. In the 5000 and 12500 ppm dose group these comprised increased tubular hyaline droplet formation and tubular basophilia in all animals, and granular cast formation in four of the 5000 ppm animals and all of the 12500 ppm animals; the latter occurring at the cortico-medullary injection. In the 1000 ppm group, increased renal hyaline droplet formation and/or tubular basophilia were seen, but not granular cast formation.
In the liver, there was minimal hepatocyte hypertrophy in 4/5 male rats in the 12500 ppm group.
The increased kidney weights and microscopic findings of renal tubular basophilia, granular cast formation and increased hyaline droplet formation present in male rats at 5000 and 12.500 ppm are clearly treatment related. These findings are consistent with the well characterized light hydrocarbon nephropathy described for male rats, following to a variety of chemicals including light hydrocarbons such as unleaded gasoline and trimethyl pentane. The characteristics include an increased accumulation of hyaline droplets in male rat kidneys, the main constituent of which is alpha 2µ-globulin (Alden et al. Adv. Modern Environ Toxicol 7: 107-120 (1984); Stonard et al. Renal Heterogeneity and Target Cell Toxicity. Bach PH and Lock EA Eds, John Wiley and Sons (1985)). It is widely accepted that this phenomenon is specific to male rat and as such appears to have no relevance for man (Swenberg et al. Toxicol and App. Pharmacol. 97: 35-46 (1989)).
Effect levels
open allclose all
- Dose descriptor:
- NOAEL
- Effect level:
- 1 613 mg/kg bw/day (actual dose received)
- Based on:
- test mat.
- Sex:
- female
- Basis for effect level:
- other: No effects observed in female rats
- Dose descriptor:
- NOAEL
- Effect level:
- 1 450 mg/kg bw/day (actual dose received)
- Based on:
- test mat.
- Sex:
- male
- Basis for effect level:
- other: corresponding to 12500 ppm
Target system / organ toxicity
- Critical effects observed:
- not specified
Applicant's summary and conclusion
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.
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