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Diss Factsheets
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EC number: 270-390-7 | CAS number: 68427-32-7
- 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
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Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 1992
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- guideline study with acceptable restrictions
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 B (Ready Biodegradability: CO2 Evolution Test)
- GLP compliance:
- yes (incl. QA statement)
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- other: See below
- Details on inoculum:
- Prior to use activated sludge from the sewage plant (Frankfurt/M.-Niederad) was washed twice with mineral nutrient solution (test medium) as
described in the OECD Guideline 301 B to eliminate organic and toxic components from the sludge. After resuspension in mineral nutrient
medium the sludge was aerated by means of compressed humidified air for approximately four hours then allowed to settle for 30 to 60 minutes
and filtered. The filtrate was used as inoculum (1% of the final volume of the test solution). - Duration of test (contact time):
- 28 d
- Initial conc.:
- 15 mg/L
- Based on:
- test mat.
- Initial conc.:
- 30 mg/L
- Based on:
- test mat.
- Initial conc.:
- 60 mg/L
- Based on:
- test mat.
- Parameter followed for biodegradation estimation:
- CO2 evolution
- Details on study design:
- The test chemical and polyvalent inoculum and mineral nutrient solution (sewage microorganisms from a sewage plant working without industrial wastes) were incubated together for a period of 28 days in the dark at 22 +/- 1 °C.
The biodegradation observed in the course of the study was determined as a percentage of the amount of CO2 that the test chemical could have
theoretically produced. This is based on the assumption that the organic carbon of the test chemical would have been quantitatively converted to
C02. For full composition see attached report. - Reference substance:
- other: Sodium Benzoate
- Preliminary study:
- The concentrations of the test material used in the test were increased because the test material exhibited an extreme low TC02. Therefore there
were some incertainties within the first test series (performed as indicated in the Protocol of January 13th, 1992) resulting in too high degradation \values (not shown in this report) of > > 100 % within the 5 and 20 mg/l test solutions. - Test performance:
- C02 evolution from the Blank flask was slightly exceeding the limits given by the EEC Guideline (50 mg C02 of total CO2 evolution within 28 d per 3 L \of test solution) but the measured value at t = 28 d (84.1 mg CO /3.5 L) is in accordance with the new DRAFT of the OECD Guideline for Testing of
Chemicals: "Ready Biodegradability" ("OECD 301 C02 Evolution Test") of June 1990 indicating a threshold of 40 mg C02 per litre of the Blank. - Parameter:
- % degradation (CO2 evolution)
- Value:
- 62.4
- Sampling time:
- 30 d
- Remarks on result:
- other: 15mg/
- Parameter:
- % degradation (CO2 evolution)
- Value:
- 57.6
- Sampling time:
- 30
- Remarks on result:
- other: 30mg/l
- Parameter:
- % degradation (CO2 evolution)
- Value:
- 75
- Sampling time:
- 28
- Remarks on result:
- other: 60mg/l
- Results with reference substance:
- The positive control Na-Benzoate was degraded to 84.1 % within 7 d.
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- readily biodegradable
- Conclusions:
- The substance was shown to be ready biodegradable in an OECD 301B study.
Reference
Biodegredation calculation
Determination of Biodegradation: Degradation was calculated as a percentage of the theoretical CO2 that should have been produced from the organic matter of the substance by complete oxidation. The CO2 being generated were calculated to the nearest 0.01 mg and biodegradation values were rounded to the nearest 0.1 percent.
0.584 mg C02/mg Test Substance= Th co2
Biodegredation therefore equals = mg Co2 produced x 100
mg of test chemical added x ThC02
Description of key information
The substance Decyl dihydrogen phosphate, potassium salt was shown to be readily biodegradable in an OECD 301B test.
Key value for chemical safety assessment
- Biodegradation in water:
- readily biodegradable
Additional information
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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