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EC number: 257-111-4 | CAS number: 51287-84-4
- 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
Acute Toxicity: oral
Administrative data
- Endpoint:
- acute toxicity: oral
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- Not specified
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- guideline study with acceptable restrictions
- Remarks:
- Restriction: Composition/purity of the test material not reported.
Cross-reference
- Reason / purpose for cross-reference:
- other: read-across target
Reference
- Endpoint:
- acute toxicity: oral
- Type of information:
- read-across from supporting substance (structural analogue or surrogate)
- Adequacy of study:
- supporting study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Study conducted on read-across material
- Justification for type of information:
- Read-across to structurally similar substance DMTE (Dimethyltin bis (2-ethylhexyl thioglycolate) CAS 57583-35-4), see attached justification.
- Reason / purpose for cross-reference:
- read-across source
- Key result
- Sex:
- male/female
- Dose descriptor:
- LD50
- Effect level:
- 1 150 mg/kg bw
- Based on:
- test mat.
- 95% CL:
- >= 850 - <= 1 550
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 996
- Report date:
- 1996
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 401 (Acute Oral Toxicity)
- Deviations:
- no
- GLP compliance:
- yes
- Test type:
- standard acute method
- Limit test:
- no
Test material
- Reference substance name:
- 2-ethylhexyl 10-ethyl-4,4-dimethyl-7-oxo-8-oxa-3,5-dithia-4-stannatetradecanoate
- EC Number:
- 260-829-0
- EC Name:
- 2-ethylhexyl 10-ethyl-4,4-dimethyl-7-oxo-8-oxa-3,5-dithia-4-stannatetradecanoate
- Cas Number:
- 57583-35-4
- Molecular formula:
- C22H44O4S2Sn
- IUPAC Name:
- 2-ethylhexyl 10-ethyl-4,4-dimethyl-7-oxo-8-oxa-3,5-dithia-4-stannatetradecan-1-oate
- Reference substance name:
- 8-Oxa-3,5-dithia-4-stannatetradecanoic acid, 10-ethyl-4,4-dimethyl-7-oxo-,2-ethylhexyl ester
- IUPAC Name:
- 8-Oxa-3,5-dithia-4-stannatetradecanoic acid, 10-ethyl-4,4-dimethyl-7-oxo-,2-ethylhexyl ester
- Details on test material:
- - Name of test material (as cited in study report): Dimethyltin bis (2-ethylhexylthioglycolate)
- Physical state: liquid
- Lot/batch No.: 1706-152
- Stability under test conditions: stable
- Storage condition of test material: room temperature
Constituent 1
Constituent 2
Test animals
- Species:
- rat
- Strain:
- Sprague-Dawley
- Sex:
- male/female
- Details on test animals or test system and environmental conditions:
- TEST ANIMALS
- Age at study initiation: naïve young adult male and female rats
- Weight at study initiation: 204 - 321 g
- Fasting period before study: Overnight prior to dosing
- Housing: animals were housed in groups of five in wire mesh suspension cages
- Diet: ad libitum
- Water: ad libitum
- Acclimation period: at least five days
ENVIRONMENTAL CONDITIONS
- Temperature: 64 - 79°F
- Humidity (%): 30 - 70%
- Air changes (per hr): No data
- Photoperiod (hrs dark / hrs light): 12-hour light/12-hour dark cycle
IN-LIFE DATES: From: July 30, 1996 To: August 22 1996
Administration / exposure
- Route of administration:
- oral: gavage
- Vehicle:
- unchanged (no vehicle)
- Details on oral exposure:
- MAXIMUM DOSE VOLUME APPLIED: 2.50 g/kg
DOSAGE PREPARATION (if unusual): The test material was administered undiluted using bulk density to determine the dose volume.
- Doses:
- 625, 880, 1250, and 2500 mg/kg bw
- No. of animals per sex per dose:
- 5 males and 5 females per dose
- Control animals:
- no
- Details on study design:
- - Duration of observation period following administration: 14 days
- Frequency of observations and weighing: All animals were observed frequently for gross signs of systemic toxicity and mortality on the day of test material administration, and at least twice daily thereafter for a total of 14 days. Body weights were measured for each animal on the day of dosing, on Day 7 of the observation period, and at the time of necropsy either at the end of the fourteen day observation period or following the death of any animal.
- Necropsy of survivors performed: yes - Statistics:
- The LD50 and 95 % confidence intervals were calculated by the method of Litchfield and Wilcoxon (1949).
Results and discussion
- Preliminary study:
- not applicable
Effect levels
- Key result
- Sex:
- male/female
- Dose descriptor:
- LD50
- Effect level:
- 1 150 mg/kg bw
- Based on:
- test mat.
- 95% CL:
- >= 850 - <= 1 550
- Mortality:
- Animals in the 880 and 1250 mg/kg bw groups died within 48 hours of dosing and all animals in the 2500 mg/kg bw group died within 24 hours of dosing.
Males:
2.50 g/kg- all animals dead at day 1
1.25 g/kg- one animal dead
0.88 g/kg- no animals died
0.625 g/kg- no animals died
Females:
2.50 g/kg- all animals dead at day 1
1.25 g/kg- 4 animals died on day1
0.88 g/kg- two animals died on day 1 and a total of 4 died by day 2.
0.625 g/kg- no animals died
Based on the cumulative mortality observed during the 14 day observation period following a single oral dose of undiluted test material the acute oral LD50 value was calculated to be 1.15 g/kg with 95% Confidence Intervals of 0.85 g/kg and 1.55 g/kg. - Clinical signs:
- other: Clinical signs noted during the observation period included varying degrees of depression, comatose, piloerection, eye squinting, hunched posture, laboured breathing, ataxia, faecal stains, urine stains, and an unkempt fur coat.
- Gross pathology:
- The gross necropsy findings in the animals that died during the observation period included spleen mottled, lungs haemorrhagic, lungs reddened, liver pale and mottled, liver exhibits area of pale blanching, spleen darkened, kidneys pale and/or congested, left kidney enlarged, stomach distended with gas, intestines reddened, intestines contain paste-like material, urinary bladder contains red or yellowish-red fluid and external staining. The only necropsy findings noted in animals which survived the 14 day observation period was tip of spleen darkened in one animal
Applicant's summary and conclusion
- Interpretation of results:
- other: EU Category 4 (H302: Harmful if swallowed).
- Conclusions:
- Based on the cumulative mortality observed during the 14-day observation period following a single oral gavage dose of undiluted test substance the acute oral LD50 value was calculated to be 1150 mg/kg.
- Executive summary:
The acute oral toxicity of undiluted test material was evaluated in accordance with the standardised guideline OECD 401, under GLP conditions.
During the study, the test material was administered undiluted to groups of five male and five female Sprague-Dawley rats at a dose level of 625, 880, 1250, and 2500 mg/kg. Following a single oral administration, the animals were observed for 14 days.
Clinical signs noted during the observation period included varying degrees of depression, comatose, piloerection, eye squinting, hunched posture, laboured breathing, ataxia, faecal stains, urine stains, and an unkempt fur coat. With exception of one animal, all surviving animals exhibited body weight gain at day 14. Gross necropsy findings for animals that died during the observation period included spleen - mottled, lungs - hemorrhagic, lungs - reddened, liver - pale and mottled, liver - exhibits area of pale blanching, spleen - darkened, kidneys - pale and/or congested, left kidney enlarged, stomach - distended with gas, intestines- reddened, intestines - contain paste-like material, urinary bladder - contains red or yellowish-red fluid and external staining. The only necropsy findings noted in animals which survived the 14 day observation period was tip of spleen darkened in one animal.
Based on the mortality observed, the acute oral LD50 value was calculated to be 1150 mg/kg with the 95% Confidence Limits of 850 and 1550 mg/kg.
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