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Diss Factsheets
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EC number: 222-182-2 | CAS number: 3380-34-5
- 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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Acute Toxicity: inhalation
Administrative data
- Endpoint:
- acute toxicity: inhalation
- Type of information:
- experimental study
- Adequacy of study:
- disregarded due to major methodological deficiencies
- Reliability:
- 3 (not reliable)
- Rationale for reliability incl. deficiencies:
- other: see 'Remark'
- Remarks:
- The study was conducted using the procedure described by Sachsse et al. (1973, 1976), which in principle was in accordance with the OECD TG 403. At the time the study was conducted, GLP was not mandatory. The test material was insufficiently characterized in the report, and no analytical purity was given. However, according to " Triclosan supplement I to EU dossier submitted 18 August 2009", the purity of CIBA-produced Triclosan exceeded 99%, and for FAT 80023/A, a degree of purity of 99.3% was reported. The triclosan test substance was dissolved into ethanol for aerosolization; this is not a representative exposure system for human hazard assessement because triclosan is a solid, powdered substance. Exposures during manufacturing or formulation activity would be a dust, if any, and not to a fully respirable aerosol of triclosan in ethanol. Thus, the study is considered as not reliable for hazard assessment and classification.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 980
- Report date:
- 1980
Materials and methods
Test guideline
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- Inhalation toxicity was tested according to the method of Sachsse et al. (1973, 1976):
- Sachsse K et al. (1973) Measurement of inhalation toxicity of aerosols in small laboratory animals. In: Proceedings of the Europ. Soc. for the Study of Drug Toxicity. Vol. XV, pp. 239-251, Zurich.
- Sachsse K et al. (1976) Toxikologische Prufungen von Aerosolen im Tierexperiment: Aus "Chemische Rundschau" 29 , Nr. 38: 1-4 - GLP compliance:
- no
- Remarks:
- ; GLP was not compulsory at the time the study was conducted
- Test type:
- standard acute method
- Limit test:
- no
Test material
- Reference substance name:
- Triclosan
- EC Number:
- 222-182-2
- EC Name:
- Triclosan
- Cas Number:
- 3380-34-5
- Molecular formula:
- C12H7Cl3O2
- IUPAC Name:
- 5-chloro-2-(2,4-dichlorophenoxy)phenol
- Details on test material:
- - Name of test material (as cited in study report): FAT 80023/A (trade name: Irgasan DP 300)
- Physical state: powder
- Analytical purity: purity not specified in the study report, however, according to " Triclosan supplement I to EU dossier submitted 18 August 2009", the purity of CIBA-produced Triclosan exceeded 99%, and for FAT 80023/A, a degree of purity of 99.3% was reported.
- No further data given.
Constituent 1
Test animals
- Species:
- rat
- Strain:
- Sprague-Dawley
- Sex:
- male/female
- Details on test animals or test system and environmental conditions:
- TEST ANIMALS
- Source: animals raised on the premises
- Age at study initiation: young adults were used, no further data given
- Weight at study initiation: males 206-264 g, females 181-218 g
- Fasting period before study: no
- Housing: ten per cage, males and females separated, in Makrolon cages typ 4
- Diet (e.g. ad libitum): rat food (NAFAG, Gossau SG, Switzerland), ad libitum
- Water (e.g. ad libitum): tap water, ad libitum
- Acclimation period: at least 4 days
ENVIRONMENTAL CONDITIONS
- Temperature (°C): 22 +/- 2
- Humidity (%): 55 +/- 10
- Photoperiod (hrs dark / hrs light): 14 hrs dark/10 hrs light
Administration / exposure
- Route of administration:
- inhalation: aerosol
- Type of inhalation exposure:
- nose only
- Vehicle:
- air
- Details on inhalation exposure:
- GENERATION OF TEST ATMOSPHERE / CHAMBER DESCRIPTION
A 50 % suspension of FAT 80023/A in ethanol 94% + 1% cyclohexane was generated by injecting the test material at a rate of 6, 12, 18, 18 mL/hr into an air stream which was discharged into the exposure chamber through a spray nozzle under a pressure of 2 atm., at a rate of 10 litres/min.
CONCENTRATION OF TEST MATERIAL IN THE ATMOSPHERE
The concentration of the aerosol in the vicinity of the animals was monitored at regular intervals throughout the aerosol exposure. The concentration was determined 5 times gravimetrically by sampling the test atmosphere through a selectron filter of 50 mm diameter and with a pore size of 0.2 µm at an air flow rate of 10 litres/min.
PARTICLE SIZE DISTRIBUTION
The particle size distribution of the aerosol in the vicinity of the animals was monitored at regular intervals throughout the aerosol exposure. The size distribution of the particles was measured twice with a 4 stage Cascade Impactor with selectron filters of 25 mm diameter and with a pore size of 0.2 µm, at an air flow rate of 17.5 litres/min. - Analytical verification of test atmosphere concentrations:
- yes
- Duration of exposure:
- 4 h
- Concentrations:
- 124, 466, 513 and 678 mg/m3 (measured), corresponding to 0.124, 0.466, 0.513 and 0.678 mg/L air
- No. of animals per sex per dose:
- Ten /sex/group
- Control animals:
- yes
- Details on study design:
- The test series comprised 6 groups including 4 treated groups and 2 controls, a sham and an ethanol control group. The ethanol control group was exposed to 60 mL/hr of ethanol 94% + 1% cyclohexane under the same conditions as for the triclosan treated groups.
For inhalation the rats were kept in separate PVC tubes positioned radially around the exposure chamber such that snout and nostrils of the animals only were exposed to the aerosol. After a 4 hour inhalation the rats were returned to their cages and were observed during a period of 14 days for clinical symptoms and mortality; body weight was assessed at test initiation, at day 7 and at day 14 of observation. At the end of the observation period, the surviving animals were sacrificed for the purpose of necropsy and gross pathological examination. Animals that died during the experiment also were subjected to necropsy and pathology.
During the exposure period the following parameters were controlled once at half time of the study inside the inhalation cylinder: temperature, relative humidity and oxygen content. - Statistics:
- LC50 including 95 % confidence limits was calculated by the logit model.
Results and discussion
Effect levelsopen allclose all
- Sex:
- male
- Dose descriptor:
- LC50
- Effect level:
- 0.286 mg/L air
- Based on:
- act. ingr.
- 95% CL:
- 0.13 - 0.446
- Exp. duration:
- 4 h
- Sex:
- female
- Dose descriptor:
- LC50
- Effect level:
- 0.603 mg/L air
- Based on:
- act. ingr.
- 95% CL:
- 0.435 - 1.291
- Exp. duration:
- 4 h
- Sex:
- male/female
- Dose descriptor:
- LC50
- Effect level:
- 0.436 mg/L air
- Based on:
- act. ingr.
- 95% CL:
- 0.32 - 0.605
- Exp. duration:
- 4 h
- Mortality:
- No mortality occurred in the two control groups.
For the males, mortality in the triclosan-treated groups was 20, 60, 70 and 100% in the 0.124, 0.466, 0.513 and 0.678 mg/L group, respectively.
For the females, mortality in the triclosan-treated groups was 0, 30, 30 and 70% in the 0.124, 0.466, 0.513 and 0.678 mg/L group, respectively.
Thus, there was an apparent sex difference in the toxicity of the test material but not significant at p =< 0.05.
All deaths, with the exception of one male of 0.513 mg/L exposure group which died on day 6, occurred during the 4 hour- exposure period. - Clinical signs:
- other: Dyspnoea, exophthalmus, ruffled fur, curved body position and cynosis were noted in some animals during the exposure period. In addition, epistaxis and chromodacryorrhoea were noted in animals exposed to concentrations of 0.513 and 0.678 mg/L.
- Body weight:
- Exposure to the test material resulted in a reduced body weight gain when compared to the control groups. In addition, an overall weight loss was noted at day 7 in males and females, exposed to a concentration of 0.513 mg/L.
- Gross pathology:
- Necropsy of dead and sacrificed treated animals revealed some cases of discolored areas (no further specified) in each group exposed to the test material. Necropsy of the control animals of both the sham and the ethanol control groups revealed no abnormalities.
- Other findings:
- Particle size distribution analysis of the chamber airborne particles showed that >90 % were smaller than 7 µm in diameter, indicating that all aerosol
were respirable.
Applicant's summary and conclusion
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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