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EC number: 500-005-2 | CAS number: 9003-35-4
- 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
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
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: peer reviewed journal
- Justification for type of information:
- Data is from peer reviewed journal
- Qualifier:
- according to guideline
- Guideline:
- ISO DIS 9408 (Ultimate Aerobic Biodegradability - Method by Determining the Oxygen Demand in a Closed Respirometer)
- GLP compliance:
- not specified
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- other: Settled municipal waste water
- Details on inoculum:
- - Source of inoculum/activated sludge (e.g. location, sampling depth, contamination history, procedure): settled municipal wastewater
- Concentration of sludge: 1 mL - Duration of test (contact time):
- 18 d
- Parameter followed for biodegradation estimation:
- other: BOD
- Details on study design:
- Samples: Samples of test chemical were collected. Industrial waste water after analysis of waste water concentrations of phenol and formaldehyde obtained were 70 and 22.5 mg/L respectively.
- Key result
- Parameter:
- % degradation (O2 consumption)
- Value:
- > 60
- Sampling time:
- 18 d
- Remarks on result:
- other: undiluted water
- Key result
- Parameter:
- % degradation (O2 consumption)
- Value:
- 80
- Sampling time:
- 10 d
- Remarks on result:
- other: diluted samples
- Details on results:
- Study was conducted to determine biodegradation rate of test chemical in water. The percent degradation of test chemical was determined by using industrial waste water samples of test chemical and parameter used was biological oxygen demand (BOD). Morethan 60 % degradation was observed in 18 days of undiluted samples and 80% degradation observed in 10 days of diluted samples.
- Parameter:
- COD
- Value:
- 5 other: mg/L
- Remarks on result:
- other: Dilution water
- Parameter:
- BOD5
- Value:
- 0.5 other: mg/L
- Remarks on result:
- other: Dilution water
- Parameter:
- BOD5
- Value:
- 150 other: mg/L
- Remarks on result:
- other: Industrial wastewater
- Parameter:
- COD
- Value:
- 216 other: mg/L
- Remarks on result:
- other: Industrial wastewater
- Validity criteria fulfilled:
- not specified
- Interpretation of results:
- readily biodegradable
- Conclusions:
- Study was conducted to determine biodegradation rate of test chemical in water. The percent degradation of test chemical was determined by using industrial waste water samples of test chemical and parameter used was biological oxygen demand (BOD). Morethan 60 % degradation was observed in 18 days of undiluted samples and 80% degradation observed in 10 days of diluted samples.
- Executive summary:
Biodegradation experiment was conducted for determining the biodegradability of test chemical. The study was performed according to guideline ISO DIS 9408 (Ultimate Aerobic Biodegradability - Method by Determining the Oxygen Demand in a Closed Respirometer) under aerobic conditions. The standard stock solutions of test chemical were prepared in distilled water according to Standard Methods (APHAAWWA-WEF, 1992). Settled municipal waste water was used as a test inoculum of 1mL concentration for the study. The percent degradation of test chemical was determined by using industrial waste water samples of test chemical and parameter used was biological oxygen demand. Morethan 60 % degradation was observed in 18 days of undiluted samples and 80% degradation observed in 10 days of diluted samples. On the basis of this percent degradability value, it is concluded that test chemical is readily biodegradable in nature.
Reference
Description of key information
Study was conducted to determine biodegradation rate of test chemical in water. The percent degradation of test chemical was determined by using industrial waste water samples of test chemical and parameter used was biological oxygen demand (BOD). Morethan 60 % degradation was observed in 10 days of indiluted samples and 80% degradation observed in 10 days of diluted samples.
Key value for chemical safety assessment
- Biodegradation in water:
- readily biodegradable
- Type of water:
- freshwater
Additional information
Various experimental studies of the test chemical were reviewed for the biodegradation end point which are summarized as below:
In an experimental key study from peer reviewed journal, biodegradation experiment was conducted for determining the biodegradability of test chemical. The study was performed according to guideline ISO DIS 9408 (Ultimate Aerobic Biodegradability - Method by Determining the Oxygen Demand in a Closed Respirometer) under aerobic conditions. The standard stock solutions of test chemical were prepared in distilled water according to Standard Methods (APHAAWWA-WEF, 1992). Settled municipal waste water was used as a test inoculum of 1mL concentration for the study. The percent degradation of test chemical was determined by using industrial waste water samples of test chemical and parameter used was biological oxygen demand. Morethan 60 % degradation was observed in 18 days of undiluted samples and 80% degradation observed in 10 days of diluted samples. On the basis of this percent degradability value, it is concluded that test chemical is readily biodegradable in nature.
In another study, the test chemical was tested to determine biodegradation rate by using two different inoculums of mixed microbial system. The test chemical was synthesized by using 14C-ring-labelled phenol and formaldehyde and parameter used to check biodegradation was labeled CO2 evolution. Fresh mixed microbial systems were used in the study which was prepared by using soils, manures, decaying plastics, and garbage. Activated and anaerobic sludges were obtained from the Limestone-Meadowbrook and Ley Creek Wastewater treatment Plants, Onondaga County, N.Y., and from the pulp sludge from a paper mill, respectively. The initial concentration of test chemical was 0.0027µCi used in the study. LS 100C-liquid scintillation counter were used to detect radioactivity of test chemical in a solution containing 5.0 g of PPO (2,5-diphenyloxazole), 0.4g of POPOP [1-4-bis-(5-phenyloxazolyl)-benzene], 6.5 ml of monoethanolamine, 500 ml of toluene, and methanol to 1 liter. The test chemical was put in 125 mL flask at concentration 0.045µCi with two different inoculums in separate flasks for 11 weeks and 5 weeks respectively at pH 7. Sterile control was used for correction for quench. By both the inoculums percent biodegradability was in the range of 0-0.15 %.
Based on the result of study which was performed according to standard ISO test guideline, test chemical is considered to be readily biodegradable in nature.
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