Registration Dossier
Registration Dossier
Diss Factsheets
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EC number: 604-162-9 | CAS number: 13977-65-6
- 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:
- migrated information: read-across from supporting substance (structural analogue or surrogate)
- Adequacy of study:
- key study
- Study period:
- 2013, January-May
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: GLP study, well conducted on the similar substance Reaction mass of dipotassium phosphonate and Phosphonic acid, potassium salt (1:1). Rationale for Read Across is attached at point 13
Cross-reference
- Reason / purpose for cross-reference:
- reference to same study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Report date:
- 2013
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- other: OECD 422
- GLP compliance:
- yes (incl. QA statement)
Test material
- Reference substance name:
- Potassium Phosphonate KH2PO3/K2HPO3
- IUPAC Name:
- Potassium Phosphonate KH2PO3/K2HPO3
- Details on test material:
- Batch number : 20111216-014
Date of expiry : 13 December 2013
Appearance : White clear fluid solution
Storage conditions : Room temperature
Constituent 1
Test animals
- Species:
- rat
- Strain:
- Sprague-Dawley
- Details on test animals or test system and environmental conditions:
- Animal supply and acclimatisation
A total of 90 Sprague Dawley rats (45 males and 45 virgin females), 6 to 7 weeks old and weighing 176 to 200 g for males and 151 to 175 g for females, have been ordered from Charles River Italia S.p.A., Calco (Lecco), Italy.
After arrival the weight range for each sex have been determined and the animals have been temporarily identified within the cage by means of a coloured mark on the tail. A health check has then been performed by a veterinarian.
An acclimatisation period of approximately 2 weeks has been allowed before the start of treatment, during which time the health status of the animals has been assessed by thorough observations. Rats considered unsatisfactory have been killed and were appropriate subjected to pathological examination.
Animal husbandry
The animals have been housed in a limited access rodent facility. Animal room controls have been set to maintain temperature and relative humidity at 22°C +/- 2°C and 55%+/- 15% respectively; actual conditions have been monitored, recorded and the records retained. There will be approximately 15 to 20 air changes per hour and the rooms will be lit by artificial light for 12 hours each day.
From arrival to pairing, animals have been housed up to 5 of one sex to a cage, in polisulphone solid bottomed cages measuring 59.5x38x20 cm (Techniplast Gazzada S.a.r.l., Buguggiate, Varese). Nesting material has been provided inside suitable bedding bags and changed at least twice a week.
During mating, animals have been housed one male to one female in clear polycarbonate cages measuring approximately 43x27x18cm with a stainless steel mesh lid and floor (Techniplast – Gazzada S.a.r.l.). Each cage tray holded absorbent material which has been inspected and changed daily.
After mating, the males have been recaged as they were before mating, the females have been transferred to individual solid bottomed cages (Techniplast Gazzada S.a.r.l.) for the gestation period, birth and lactation. Suitable nesting material has been provided and has been changed as necessary.
Drinking water has been supplied ad libitum to each cage via water bottles, except in the case of urinalysis investigations.
A commercially available laboratory rodent diet (4 RF 21, Mucedola S.r.l., Via G. Galilei, 4, 20019, Settimo Milanese (MI), Italy) will be offered ad libitum throughout the study.
There is no information available to indicate that any non-nutrient substance likely to influence the effect of the test item is present in the drinking water or the diet. Records of analyses of water and diet are kept on file at RTC.
Dated and signed records of activities relating to the day to day running and maintenance of the study in the animal house will be recorded.
Administration / exposure
- Route of administration:
- oral: gavage
- Vehicle:
- water
- Analytical verification of doses or concentrations:
- yes
- Duration of treatment / exposure:
- Males
Animals have been dosed once a day, 7 days a week, for a minimum of 2 consecutive weeks prior to pairing and thereafter through the day before necropsy.
Dose volumes will be adjusted once per week for each animal according to the last recorded body weight.
Females
Animals will be dosed once a day, 7 days a week, for a minimum of 2 consecutive weeks prior to pairing and thereafter during pairing , post coitum and post partum periods until Day 3 post partum or the day before sacrifice. Dose volumes will be adjusted once per week for each animal according to the last recorded body weight.
During the gestation period, dose volumes will be calculated according to individual body weight on Days 0, 7, 14 and 20 post coitum and on Day 1 post partum. Thereafter individual dose volumes will remain constant.
Doses / concentrationsopen allclose all
- Remarks:
- Doses / Concentrations:
10 mg/Kg bw
Basis:
actual ingested
- Remarks:
- Doses / Concentrations:
100 mg/Kg bw
Basis:
actual ingested
- Remarks:
- Doses / Concentrations:
1000 mg/Kg bw
Basis:
actual ingested
- No. of animals per sex per dose:
- 10 per sex per dose
- Control animals:
- yes, concurrent vehicle
Results and discussion
Results: maternal animals
Maternal developmental toxicity
- Details on maternal toxic effects:
- Maternal toxic effects:no effects
Effect levels (maternal animals)
- Dose descriptor:
- NOEL
- Effect level:
- > 1 000 mg/kg bw/day (actual dose received)
- Based on:
- act. ingr.
- Basis for effect level:
- other: developmental toxicity
Results (fetuses)
- Details on embryotoxic / teratogenic effects:
- Embryotoxic / teratogenic effects:no effects
Effect levels (fetuses)
- Dose descriptor:
- NOEL
- Effect level:
- > 1 000 mg/kg bw/day (actual dose received)
- Based on:
- act. ingr.
- 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:
- NOEL oral rat > 1000 mg/Kg bw
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