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EC number: 413-800-3 | CAS number: 87787-81-3 STEPAN TAB -2
- 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
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- March 30 to April 27, 1990
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: see 'Remark'
- Remarks:
- Study was conducted following good laboratory practices and following a procedure similar to OECD Guideline 301D, Ready Biodegradability: Closed Bottle Test. Some test modifications were made, which are noted in the study design section. The batch number and purity of the test substance was not specified in the report.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 990
- Report date:
- 1990
Materials and methods
Test guideline
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- OECD Guideline 301 D (Ready Biodegradability: Closed Bottle Test)
- Deviations:
- not specified
- GLP compliance:
- yes
Test material
- Reference substance name:
- 87787-81-3
- EC Number:
- 618-070-1
- Cas Number:
- 87787-81-3
- IUPAC Name:
- 87787-81-3
- Reference substance name:
- A mixture of: N,N-di(hydrogenated alkyl C14-C18)phthalamic acid; dihydrogenated alkyl (C14-C18)amine
- EC Number:
- 413-800-3
- EC Name:
- A mixture of: N,N-di(hydrogenated alkyl C14-C18)phthalamic acid; dihydrogenated alkyl (C14-C18)amine
- Cas Number:
- 87787-81-3
- Molecular formula:
- C44H79NO3
- IUPAC Name:
- 2-(dioctadecylcarbamoyl)benzoic acid; 2-(ditetradecylcarbamoyl)benzoic acid; 2-[(propan-2-yloxy)carbonyl]benzoic acid; 2-[octadecyl(tetradecyl)carbamoyl]benzoic acid; 2-octadecyl-2,3-dihydro-1H-isoindole-1,3-dione; 2-tetradecyl-2,3-dihydro-1H-isoindole-1,3-dione; benzene-1,2-dicarboxylic acid; dioctadecylamine; ditetradecylamine; octadecyl(tetradecyl)amine
- Reference substance name:
- reaction mass of: N,N-di(hydrogenated alkyl C14-C18)phthalamic acid dihydrogenated alkyl (C14-C18)amine
- IUPAC Name:
- reaction mass of: N,N-di(hydrogenated alkyl C14-C18)phthalamic acid dihydrogenated alkyl (C14-C18)amine
- Reference substance name:
- Stepan TAB-2
- IUPAC Name:
- Stepan TAB-2
- Details on test material:
- No details provided in study report, other than the test sample being designated as Stepan Agent X-1469-91, and described as a water insoluble white solid.,
Constituent 1
Constituent 2
Constituent 3
Constituent 4
- Specific details on test material used for the study:
- Details on properties of test surrogate or analogue material (migrated information):
Not applicable.
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, domestic (adaptation not specified)
- Details on inoculum:
- Innoculum: Activated sludge bacteria from Bergen County, NJ, MUA, collected March 28, 1990. The inoculums was maintained in an established activated sludge apparatus until test initiation.
- Duration of test (contact time):
- 28 d
- Details on study design:
- Procedure: Testing was conducted in accordance with the attached procedure: PRO/FT CBT-AC 014-7, “Ready Biodegradability: Closed Bottle Test (OECD).” The closed bottle test procedure was chosen, according to the study author, because of the water insolubility of the test substance. Although the closed bottle test is an aqueous test system, the system is sealed, thus containing and isolating the test material. The measurement for degradation (oxygen consumption) is indirect and insolubility does not interfere with analysis.
Test Conditions: Duration = 28 days; Incubation = 20 ± 1°C, in the dark
Instrument: YSI Dissolved Oxygen Analyzer 54A
A minimum of two replicate dissolved oxygen readings were taken at each time period, with eight replicate readings for the target concentration at 28 days, and four replicate readings for the supplementary concentrations at 28 days.
Innoculum: Activated sludge bacteria from Bergen County, NJ, MUA, collected March 28, 1990. The inoculums was maintained in an established activated sludge apparatus until test initiation.
Dilution water: Standard dilution water
Test Concentrations: (2 mg/l) target concentration; (5 mg/l) supplementary concentration by lab; (q mg/l) supplementary concentration by lab
Modifications of Test Procedure:
(1) Use of inert carrier. The laboratory delivered the test substance into the system by first solubilizing it in an evaporate solvent and then cast it on glass fiber filters. The glass fiber filters help in sinking the sample in the test vessels, and help spread the insoluble material over a wide surface for interfacial reaction with the test medium.
(2) An expanded range of test concentrations was used. The optional 5 mg/l and 1 mg/l bracket the 2 mg/l target concentration. The 5 mg/l helps in confirming partially degradable materials, while the 1 mg/l helps in confirming highly degradable materials.
Reference substance
- Reference substance:
- aniline
- Remarks:
- 2 mg/l
Results and discussion
- Preliminary study:
- No preliminary study
- Test performance:
- See text in results section below.
% Degradation
- Parameter:
- % degradation (O2 consumption)
- Value:
- 57.1
- Sampling time:
- 28 d
- Details on results:
- See text below in "any other information on results incl. tables sect.
BOD5 / COD results
- Results with reference substance:
- The reference compound; aniline degraded 100% after 28 days, thereby rendering the results valid.
Any other information on results incl. tables
Table 1: Average Dissolved Oxygen Measurements
|
|
||||
Sample |
Concentration (mg/l) |
Day 0 |
Day 5 |
Day 15 |
Day 28 |
Stepan Agent |
2 |
9.4 |
7.4 |
5.9 |
5.8 |
Stepan Agent |
5 |
9.1 |
6.2 |
5.4 |
5.0 |
Stepan Agent |
1 |
9.2 |
7.7 |
6.7 |
6.8 |
Blank Controls: |
|
|
|
|
|
Dilution water without inoculum |
9.3 |
8.7 |
8.5 |
8.8 |
|
Dilution water with inoculum |
9.2 |
8.7 |
7.9 |
8.2 |
|
Carrier Control* |
9.2 |
8.5 |
8.2 |
8.3 |
|
Reference Controls: |
|
|
|
|
|
Aniline – Reference substance with inoculums (2mg) |
9.2 |
1.1 |
0.9 |
0.8 |
|
Interval Calibrating Standard (dilution water with mercuric chloride (20 ppm)**) |
9.1 |
9.0 |
9.0 |
9.0 |
Note: measurements are read to the nearest tenth. Averaged values are calculated to the nearest hundredth.
*The carrier control consisted of 0.5 isopropyl alcohol (IPA) on glass fiber filters. The IPA was allowed to evaporate before adding the fiber filters to the test system containing dilution water with inoculums. As demonstrated, the dissolved oxygen measurements of the carrier control did not significantly differ from the blank control of dilution water with inoculums. This indicates that the use of the alcohol solvent did not interfere with the test procedure.
**Provides preserved solution for intra-test standardization of dissolved oxygen instrument from week to week.
Table 2: Mean Oxygen Depletion and Percent Biodegradation
|
Blank Adjusted Result* |
|||
Sample |
Measurement |
Day 5 |
Day 15 |
Day 28 |
Stepan Agent (2mg) |
Depletion mg 02 |
1.3 |
2.0 |
2.4 |
|
TOD = 4.2 mg/l |
|
|
|
|
% Degradation |
30.9 |
47.6 |
57/1 |
Stepan Agent (5 mg) |
Depletion mg 02/l |
2.5 |
2.5 |
3.2 |
|
TOD = 10.4 mg/l |
|
|
|
|
% Degradation |
24.0 |
24.0 |
30.8 |
Stepan Agent (1 mg) |
Depletion mg 02/l |
1.0 |
1.2 |
1.4 |
|
TOD = 2.1 mg/l |
|
|
|
|
% Degradation |
47.6 |
57.1 |
66.7 |
Blank Controls |
|
|
|
|
Dilution water without inoculums |
Depletion mg 02/l |
0.6 |
0.8 |
0.5 |
Dilution water with inoculums |
Depletion mg 02/l |
0.5 |
1.3 |
1.0 |
Reference Controls |
|
|
|
|
Aniline 2 mg/l |
Depletion mg 02/l |
7.6 |
7.0 |
7.4 |
|
TOD 6.18 mg/l |
|
|
|
|
% Degradation |
100.0 |
100.0 |
100.0 |
*Dissolved oxygen values corrected by the blank control (dilution water with inoculum)
The analysis of biodegradability is dependent on two determinations. First, the calculation of the Theoretical Oxygen Demand (TOD) from the chemical formula, or from the organic carbon analysis, and second, the calculation of the Actual Oxygen Demand. The second calculation yields the test percent biodegradability. It is noted that in all calculations the depletion values are corrected by the appropriate blank controls containing inoculums for each time period.
Calculations:
TOD:
For a compound Cc,Hh, Nn, Oo, Pp, Ss, the theoretical oxygen demand may be calculated from the equation:
TOC(NO3)= {16 [2c +(1/2)(h-c1) +3s +(5/2)n + (5/2)p +( ½) na – 0]}/ molecular weight = mgO2/mg
Note: The TOD of the sample was calculated based on the percent carbon contained in the sample. Calculation of the TOD is illustrated in Appendix A of the study report
Percent Degradation from Actual Oxygen Demand:
%D = [oxygen depletion (BOD mg/l)] conc. of test material (mg/l) x TOD
Applicant's summary and conclusion
- Interpretation of results:
- inherently biodegradable
- Conclusions:
- The test substance was found to degrade 57.1% after 28 days. This level of biodegradability was achieved in the 2 mg/L target test concentrations. The reference compound; aniline degraded 100% after 28 days, thereby rendering the results valid.
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