Registration Dossier
Registration Dossier
Data platform availability banner - registered substances factsheets
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Diss Factsheets
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 204-593-9 | CAS number: 123-03-5
- 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
Acute Toxicity: inhalation
Administrative data
- Endpoint:
- acute toxicity: inhalation
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- February 2005-May 2005
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Guideline Study Under GLP
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 005
- Report date:
- 2005
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 403 (Acute Inhalation Toxicity)
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 870.1300 (Acute inhalation toxicity)
- GLP compliance:
- yes (incl. QA statement)
- Test type:
- acute toxic class method
- Limit test:
- yes
Test material
- Reference substance name:
- Cetylpyridinium chloride
- EC Number:
- 204-593-9
- EC Name:
- Cetylpyridinium chloride
- Cas Number:
- 123-03-5
- Molecular formula:
- C21H38N.Cl
- IUPAC Name:
- cetylpyridinium chloride
- Reference substance name:
- CPC
- IUPAC Name:
- CPC
- Test material form:
- solid: particulate/powder
- Remarks:
- migrated information: powder
- Details on test material:
- Test Substance Identification: Cetylpyridinium Chloride
Lot#: 00217966
Test Substance Description: White powder
Purity: 100.1% by assay
Date received: January 12, 2005
PSL Reference No: 050112-ID
Study Initiation Date: January 12, 2005
Constituent 1
Constituent 2
Test animals
- Species:
- rat
- Strain:
- Sprague-Dawley
- Sex:
- male/female
- Details on test animals or test system and environmental conditions:
- Housing: The animals were singly housed in suspended stainless steel caging with mesh floors. Litter paper was placed beneath the cage and was changed at least three times per week.
Animal Room Temperature Range: 20-23 Degrees C.
Photoperiod: 12-hour light/dark cycle
Acclimation Period: 21-28 Days
Food: Purina Rodent Chow #5002
Water: Tap water was supplied ad-libitum by an automatic water dispensing system except during exposure.
Contaminants: There were no known contaminants reasonably expected to be found in the food or water at levels which would have interfered with the results of this study.
Administration / exposure
- Route of administration:
- inhalation: dust
- Type of inhalation exposure:
- nose only
- Vehicle:
- air
- Details on inhalation exposure:
- Nose-Only Exposure Chamber: A nose-only inhalation chamber with an internal volume of approximately 6.7 liters (Mini-Nose Only Inhalation Chamber, ADG Developments LTD) was used for exposure. Animals were individually housed inpolycarbonate holding tubes which seal to the chamber with an "O" ring during exposure. The base unit tenninates the chamber with a 0.5-inch diameter tube for discharged air
Air Supply: Filtered air was supplied by an air compressor (JUN-AIR, Model #6-15) to the dust generator and was measured using a Mass Flowmeter (Omega, Model #FMA 5613). Additional compressed mixing air, supplied using dry filtered air from a compressed air tank (WELCO) was introduced into the chamber to help uniformly distribute the test atmosphere by creating a vortex at the chamber inlet and was measured with a Mass Flowmeter (Omega, Model #FMA 5613). Chamber airflow was monitored throughout the exposure period and recorded periodically.
Ambient Conditions: The temperature and relative humidity within the chamber as well as the room were monitored continuously during each exposure. In-chamber measurements were made with a Humidity-Temperature Indicator (Taylor, Model #5502) and room conditions were measured with a Temperature-Humidity Monitor (Dickson, Model #TH550). Temperature and humidity values were recorded every 15 minutes for the first hour of exposure and every 30 minutes thereafter.
Test Substance Preparation: The test substance was processed in a 1.6-gallon urethane lined millingjar (Abbethane, Paul O'Abbe) with porcelain grinding media (0.5'' balls) for 24 hours. After milling, the test substance was sieved through a 3/8 inch polyethylene sieve to separate it from the grinding media and any other large particles that remained. The test substance was then further ground in a coffee mill (Krups, Model 203) and passed through a 600-micron USA standard testing sieve.
Dust Generation: The test substance was aerosolized using a modified Wright Dust Generator driven by a variable speed motor (Dayton, Model 4Z538A). The test substance was packed into the dust container (Wright, Model DF 183 [0.51 mg/L] or Model DF 183A SS [0.054 mg/L]) and compressed to 1,000 lbs/in2 using a lab press (Cmver, Model C). The container was then fitted with a stainless steel cutting head (Model DF 194SS [0.54 mg/L] or Model DF193SS [0.054 mg/L]) and cutting blade (Model DF 191SS [0.51 mg/L] or Model DF 190SS [0.054 mg/L]). Compressed air was supplied to the dust generator at 30 psi. The aerosolized dust was then fed directly into the chamber through the dust outlet assembly.
Chamber Concentration Measurements: Gravimetric samples were withdrawn at 5 (0.054 mg/L) or 6 (0.51 mg/L) intervals from the breathing zone of the animals during each exposure. Samples were collected using 25 mm glass fiber filters (GF/B Whatman) in a filter holder attached by Y,.inch tygon tubing to avacuum pump (Reliance Electric, Model #G557X). Filter papers were weighed before and after collection to determine the mass collected. This value was divided by the total volume of air sampled to determine the chamber concentration. Sample airflows were measured using a Mass Flowmeter (Omega, Model #FMA 5610).
Particle Size Distribution: An eight-stage Andersen cascade impactor was used to assess the particle size distribution of the test atmosphere. Samples were withdrawn from the breathing zone of the animals at two intervals during each exposure. The filter paper collection stages were weighed before and after sampling to determine the mass collected upon each stage. The aerodynamic mass median diameter and geometric standard deviation were determined graphically using two-cycle logarithmic probit axes.
Exposure Period: For each exposure level, the animals were exposed to the targeted chamber concentration for at least 4 hours. At each level, the exposure period was extended beyond 4 hours to allow the chamber to reach equilibrium (T99). At the end of each exposure period, the generation was terminated and the chamber was operated for 15 minutes with clean air. At the end of this period, the animals were removed from the chamber. Prior to being returned to their cages, excess test substance was removed from the fur of each animal. - Analytical verification of test atmosphere concentrations:
- yes
- Remarks:
- 0.054 mg/L
- Duration of exposure:
- 4 h
- Concentrations:
- 0.05 and 0.5 mg/L
- No. of animals per sex per dose:
- 5 males and 5 females 0.5 mg/L
5 males and 5 females 0.05 mg/L
Gravimetric and nominal chamber concentrations at 0.054 and 0.51 mg/L respectively. - Control animals:
- no
- Details on study design:
- The procedures and aerosolization equipment used for each exposure were based on the results of pretest data. In each instance, the conditions of generation were modified to achieve the targeted chamber concentration with a desirable particle size distribution.
Results and discussion
Effect levels
- Sex:
- male/female
- Dose descriptor:
- LC50
- Effect level:
- >= 0.054 - <= 0.51 mg/L air (analytical)
- Based on:
- test mat.
- Exp. duration:
- 4 h
- Mortality:
- 9 of 10 animals died at 0.51 mg/L. There was no mortality at the 0.054 mg/L exposure level. All animals (5 females, 5 males) survived the exposure to the test atmosphere and gained body weight
0.51 mg/L Exposure Level
All five males and four females died within three days of exposure to the test atmosphere. - Clinical signs:
- other: Clinical signs at the 0.054 mg/L exposure Level, for four animals, included reduced fecal volume and hypoactivity. The affected animals recovered by Day 3, and along with the other animals, appeared active and healthy for the remainder of the 14-day obse
- Body weight:
- Males: 303-368 Grams
Females: 200-250 Grams - Gross pathology:
- At the 0.054 mg/L exposure level, no gross abnomalities were noted for the animals when necropsied at the conclusion of the 14-day observation period.
At the 0.51 mg/L exposure level, a gross necropsy of the decedants revealed discoloration and edema of the lungs and mucous-filled tracheas. No gross abnormalities were noted for the euthanized animal when necropsied at the conclusion of the 14-day observation period.
Any other information on results incl. tables
TargetConcentration (m2/L) |
Trial# |
TrialChamberConcentration (mg/L) |
MMAD(µm) |
0.05 |
8 |
0.053 |
2.8 |
0.5 |
5 |
0.54 |
3.0 |
Applicant's summary and conclusion
- Interpretation of results:
- other: LC50 between 0.054 and 0.51 mg/L
- Remarks:
- Criteria used for interpretation of results: EU
- Conclusions:
- The inhalation LC50 of Cetylpyridinium Chloride is between 0.054 and 0.51 mg/L in male and female rats.
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.