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EC number: 953-553-3 | 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
Developmental toxicity / teratogenicity
Administrative data
- Endpoint:
- developmental toxicity
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 1983-07-11 to 1983-08-04
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Good quality study to GLP; considered adequate for assessment.
Data source
Referenceopen allclose all
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 984
- Report date:
- 1984
- Reference Type:
- secondary source
- Title:
- Unnamed
- Year:
- 2 008
Materials and methods
Test guideline
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- OECD Guideline 414 (Prenatal Developmental Toxicity Study)
- Deviations:
- yes
- Remarks:
- Does not include period from implantation to start of organogenesis (days 1-5)
- GLP compliance:
- yes
- Limit test:
- no
Test material
- Reference substance name:
- Alkanes, C14-17, chloro
- EC Number:
- 287-477-0
- EC Name:
- Alkanes, C14-17, chloro
- Cas Number:
- 85535-85-9
- Molecular formula:
- Substance is a range of chlorinated isomers of C14 to C17 paraffin
- IUPAC Name:
- alkanes, C14-17, chloro
- Details on test material:
- - Name of test material (as cited in study report): Cereclor S52
- Substance type: technical product
- Physical state:clear, slightly viscous liquid
- Impurities (identity and concentrations): no stabiliser
- Composition of test material, percentage of components: C14-17 chlorinated paraffin (51.8% chlorinated)
- Lot/Batch no: 306
Constituent 1
Test animals
- Species:
- rat
- Strain:
- other: Charles River CD
- Details on test animals or test system and environmental conditions:
- TEST ANIMALS- Source: Charles River Breeding Labs. Portage, Michigan USA- Age at study initiation: 70 days on receipt (91 days at mating)- Weight at study initiation: 219-294 g at time of mating- Fasting period before study: none- Housing: Individually in suspended wire cages- Diet (e.g. ad libitum): ad libitum- Water (e.g. ad libitum): ad libitum- Acclimation period: 21 daysENVIRONMENTAL CONDITIONS- Temperature (°C): 21 to 24- Humidity (%): 52-64- Air changes (per hr): no data- Photoperiod (hrs dark / hrs light): 12/12IN-LIFE DATES: From: 1983-07-11 To: 1983-08-04
Administration / exposure
- Route of administration:
- oral: gavage
- Vehicle:
- corn oil
- Details on exposure:
- PREPARATION OF DOSING SOLUTIONS: "Appropriate amount of test material was dissolved in vehicle by shaking". VEHICLE- Justification for use and choice of vehicle (if other than water): test material soluble in corn oil- Concentration in vehicle: 100, 400 and 1000 mg/ml (nominal)- Amount of vehicle (if gavage): 5 ml/kg bw- Purity: no data
- Analytical verification of doses or concentrations:
- yes
- Details on analytical verification of doses or concentrations:
- Weekly samples of dosing solutions taken prior to dosing and the concentration of chlorinated paraffin measured by viscometry.
- Details on mating procedure:
- - Impregnation procedure: co-housed- If cohoused: - M/F ratio per cage: 1/1 - Length of cohabitation: no data - Verification of same strain and source of both sexes: no; suitable stock males, strain not reported, used - Proof of pregnancy: vaginal plug / sperm in vaginal smear referred to as day 0 of pregnancy
- Duration of treatment / exposure:
- from gestational days 6 to 19
- Frequency of treatment:
- daily
- Duration of test:
- Animals sacrificed on gestational day 20.
- No. of animals per sex per dose:
- 25 mated females per dose level
- Control animals:
- yes, concurrent vehicle
- Details on study design:
- - Dose selection rationale: based on the results of two preliminary sighting studies- Rationale for animal assignment (if not random): sequential addition of mated females to the 4 study groups
Examinations
- Maternal examinations:
- CAGE SIDE OBSERVATIONS: Yes- Time schedule: twice daily for mortality and overt changes in appearance/behaviourDETAILED CLINICAL OBSERVATIONS: Yes - Time schedule: daily for clinical signs of toxicityBODY WEIGHT: Yes - Time schedule for examinations: on gestation days 0, 6, 9, 12, 16 and 20.POST-MORTEM EXAMINATIONS: Yes - Sacrifice on gestation day # 20- Organs examined: uterus and organs visible in the abdominal and thoracic cavities
- Ovaries and uterine content:
- At sacrifice the numbers and location of viable and non-viable fetuses, early and late resorption sites and number of total implantations and ovarian corpora lutea were determined
- Fetal examinations:
- All fetuses were weighed, sexed and examined for external malformations. One half of the fetuses from each litter were then examined for visceral malformations and the other half for skeletal malformations.
- Statistics:
- Fetal sex distribution and numbers of litters with malformations compared using Chi-squared test or Fisher's exact test. Numbers of non-viable fetuses, early and late resorptions and post-implantation losses compared by the Mann-Whitney U-test. Mean fetal body weight, number of viable fetuses, total implantations and corpora lutea were compared by analysis of variance, Bartlett's test and the appropriate t-test.
- Indices:
- No data
- Historical control data:
- yes
Results and discussion
Results: maternal animals
Maternal developmental toxicity
- Details on maternal toxic effects:
- Maternal toxic effects:yesDetails on maternal toxic effects:Wet and/or matted fur in the anogenital region (with red or yellow staining) and an increased incidence of soft stool prior to sacrifice was seen in animals given Cereclor S52 at dose levels of 2000 and 5000 mg/kg bw/day. One mid-dose group female died on gestational day 16 (the cause of death was not established, but was probably not treatment-related).
Effect levels (maternal animals)
open allclose all
- Dose descriptor:
- NOAEL
- Effect level:
- 500 mg/kg bw/day
- Basis for effect level:
- other: maternal toxicity
- Dose descriptor:
- NOAEL
- Effect level:
- 5 000 mg/kg bw/day
- Based on:
- test mat.
- Basis for effect level:
- other: developmental toxicity
Results (fetuses)
- Details on embryotoxic / teratogenic effects:
- Embryotoxic / teratogenic effects:no effectsDetails on embryotoxic / teratogenic effects:Single instances of anophthalemia, microphthalemia, spine and rib anomalies and tail/anal opening anomalies were seen which were not considered treatment-related.
Effect levels (fetuses)
- Dose descriptor:
- NOAEL
- Effect level:
- 5 000 mg/kg bw/day
- Based on:
- test mat.
- Basis for effect level:
- other: teratogenicity
Fetal abnormalities
- Abnormalities:
- not specified
Overall developmental toxicity
- Developmental effects observed:
- not specified
Applicant's summary and conclusion
- Conclusions:
- No treatment-related adverse develpmental effects were seen in the offspring of pregnant rats following exposure to Cereclor S52 (a C14-17 chlorinated paraffin; 52% chlorinated) at dose levels up to 5000 mg/kg bw/day, administered daily by gavage in corn oil on gestational days 6 to 19. Signs of maternal toxicity were seen at the two highest dose levels.
- Executive summary:
Groups of 25 mated female Charles River CD rats received 0, 500, 2000 or 5000 mg/kg bw/day of Cereclor S52 (a C14 -17 chlorinated paraffin; 52% chlorination), in corn oil by oral gavage on gestational days 6-19, with sacrifice on day 20. The numbers and location of viable and non-viable foetuses, resorption sites and total number of implantations and ovarian corpora lutea were determined. All foetuses were examined for external malformations, and one half of the foetuses from each litter were then examined for visceral malformations and the other half for skeletal malformations.
Clinical signs of maternal toxicity were seen at 2000 and 5000 mg/kg bw/day, comprising wet and/or matted fur in the anogenital region (with red or yellow staining) and an increased incidence of soft stool. Treatment did not affect the uterine parameters examined, pup weights or the incidence of foetal malformations. In this study, no developmental effects were observed at dose levels up to 5000 mg/kg bw/day (the highest tested dose), and this can therefore be considered as the study NOAEL for these effects.
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