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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 246-014-2 | CAS number: 24085-08-3
- 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
Genetic toxicity: in vitro
Administrative data
- Endpoint:
- in vitro gene mutation study in bacteria
- Remarks:
- Type of genotoxicity: gene mutation
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 22nd January 1999 - 25th January 1999
- Reliability:
- 1 (reliable without restriction)
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 999
- Report date:
- 1999
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 471 (Bacterial Reverse Mutation Assay)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method B.13/14 (Mutagenicity - Reverse Mutation Test Using Bacteria)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of assay:
- bacterial reverse mutation assay
Test material
- Reference substance name:
- 2-[tert-butyl(phenylmethyl)amino]-1-[4-hydroxy-3-(hydroxymethyl)phenyl] hydrochloride
- EC Number:
- 246-014-2
- EC Name:
- 2-[tert-butyl(phenylmethyl)amino]-1-[4-hydroxy-3-(hydroxymethyl)phenyl] hydrochloride
- Cas Number:
- 24085-08-3
- Molecular formula:
- C20H25NO3.HCl
- IUPAC Name:
- 2-[tert-butyl(phenylmethyl)amino]-1-[4-hydroxy-3-(hydroxymethyl)phenyl] hydrochloride
- Test material form:
- other: Solid
- Details on test material:
- - Name of test material (as cited in study report): Benzylsalbutamon HCL
- Molecular formula (if other than submission substance): C20-H25-N-O3.H-Cl
- Molecular weight (if other than submission substance): 363.87
- Smiles notation (if other than submission substance):
- InChl (if other than submission substance):
- Structural formula attached as image file (if other than submission substance): see Fig.
- Substance type:
- Physical state: Solid
- Analytical purity:
- Impurities (identity and concentrations):
- Composition of test material, percentage of components:
- Isomers composition:
- Purity test date:
- Lot/batch No.:
- Expiration date of the lot/batch:
- Radiochemical purity (if radiolabelling):
- Specific activity (if radiolabelling):
- Locations of the label (if radiolabelling):
- Expiration date of radiochemical substance (if radiolabelling):
- Stability under test conditions:
- Storage condition of test material: In the dark at 37°C
- Other:
Constituent 1
Method
Species / strain
- Species / strain / cell type:
- S. typhimurium TA 1535, TA 1537, TA 98 and TA 100
- Details on mammalian cell type (if applicable):
- The Salmonella typhimurium strains were regularly checked to confirm their histidine-requirement, crystal violet sensitivity, ampicillin resistance (TA98 and TA100), UV-sensitivity and the number of spontaneous revertants.
Stock cultures of the two strains were stored in liquid nitrogen (-198°C).
- Metabolic activation:
- with and without
- Metabolic activation system:
- S9-mix
- Test concentrations with justification for top dose:
- Samples of frozen stock cultures of bacteria were transferred into enriched nutrient broth (Oxoid no.2) and incubated in a shaking incubator (37°C, 150spm), until the cultures reached an O.D. of 0.4 at 700 nm (10 to the power 9 cells/ml). Freshly grown cultures of each strain were used for each test.
All incubations were carried out in the dark at 37°C. The temperature was monitored during the experiment. - Vehicle / solvent:
- Dimethylsulphoxide
Controls
- Untreated negative controls:
- yes
- Remarks:
- Dimethylsulphoxide
- Positive controls:
- yes
- Remarks:
- Saline (physiological saline) and DMSO (Dimethylsuphoxide)
- Details on test system and experimental conditions:
- Preparation of bacterial cultures:
Samples of frozen stock cultures of bacteria were transferred into enriched nutrient broth (Oxoid no.2) and incubated in a shaking incubator (37°C, 150 spm), until the cultures reached an O.D. of 0.4 at 700nm (10 to the power 9 cells/ml). Freshly grown cultures of each strain were used for each test.
Agar plates:
Agar plates (Ø 9cm) contained 25ml glucose agar medium. Glucose agar medium contained per liter: 18g purified agar (Oxoid, code L28) in Vogel-Bonner Medium E, 10g glucose, 0.5mg biotin and 0.6mg histidine.
Top agar:
Vogel-Bonner Medium E containing 0.6% (w/v) purified agar was heated to dissolve the agar. Samples of 3ml top agar were transferred into 10ml glass tubes with metal caps. Top agar tubes were autoclaved for 20min at 121°C.
Environmental conditions:
All incubations were carried out in the dark at 37°C. The temperature was monitored during the experiment.
Mutation assay:
Eight different doses (with approximately half-log steps) of the test substance were tested in tripicalte in each strain. The test substance was tested both in the absence and presence of S9-mix in each strain.
Top agar in top agar tubes was molten and heated to 45°C. The following solutions were successively added to 3ml molten top agar: 0.1ml of a fresh bacterial culture (10 to the power 9 cells/ml) of one of the tester strains, 0.1ml of a dilution of the test substance in dimethylsuylphoxide and either 0.5ml S9-mix (in case of activation assays) or 0.5ml 0.1M phosphate buffer (in case of non-activation assays). The ingredients were mixed on a Vortex and the content of the top agar tube was poured onto a selective agar plate. After solidification of the top agar, the plates were turned and incubated in the dark at 37°C for 48h. After this period of revertant (histidine independent) colonies were counted.
Colony counting:
The revertant colonies (histine independent) were counted automatically with a Protos model 50000 colony counter or manually, if less than 40 colonies per plate were prescent. - Evaluation criteria:
- A test substance is considered negative (not mutagenic) in the test if:
- The total number of revertants in any tester strain at any concentration is not greater than two times the solvent control value, with or without metabolic activation.
A test substance is considered postivie (mutagenic) in the test if:
-It induces at least a 2-fold, dose related increase in the number of revertants with respect to the number induced by the solvent control in any of the tester strains, either with or without metabolic activation. However, any mean plate count of less than 20 is considered to be not significant.
The preceding criteria were not absolute any other modifying factors might enter into the final evaluation decision.
Results and discussion
Test results
- Species / strain:
- S. typhimurium TA 1535, TA 1537, TA 98 and TA 100
- Metabolic activation:
- with and without
- Genotoxicity:
- not specified
- Cytotoxicity / choice of top concentrations:
- not specified
- Vehicle controls validity:
- not applicable
- Untreated negative controls validity:
- valid
- Positive controls validity:
- valid
- Remarks on result:
- other: strain/cell type: Salmonella typhimurium
- Remarks:
- Migrated from field 'Test system'.
Any other information on results incl. tables
Benzylsalbutamon HCL was tested in the tester strains TA98 and TA100 with concentrations of 3, 10, 33, 100, 333, 1000, 3330, and 5000 µg/plate in the absence and presence of the S9 -mix.
Precipitate:
Benzylsalbutamon HCL did not precipitate in the top agar. Precipitation of Benzylsalbutamon HCL was not observed on the plates at the start or at the end of the incubation period in both tester strains.
Toxicity of the test substance:
The bacterial background lawn was not reduced at all concentrations tested and no decrease in the number of revertants was observed.
Number of revertants:
Tester strain TA98 showed negative responses over the entire dose range, i.e no dose-related, two-fold, increase in the number of revertants. In tester strain TA100, Benzylsalbutamon HCL induced up to 4.5- and 4.0- fold, dose related, increases in the number of revertant colonies compared to the solvent control in the absence and presence of S9 -mix, respectively.
The negative and strain-specific positive control values were within our laboratory background historical control data ranges indicating that the test conditions were adequate and that the metabolic activation system functioned properly.
Applicant's summary and conclusion
- Conclusions:
- Interpretation of results (migrated information):
positive
Based on the results of this study it is concluded that Benxylsalbutamon HCL is mutagenic in the Salmonella typhimurium reverse mutation assay in strain TA100. - Executive summary:
Benzylsalbutamon HCL was tested in the Salmonella typhirmurium reverse mutation assay with two histidine-requiring strains of Salmonella typhimurium (TA100 and TA98).
Benzylsalbutamon HCL was tested up to concentrations of 5000µg/plate in the absence and presence of S9 -mix. Benzylsalbutamon HCL did not precipitate on the plates at this dose level and no toxicity was observed.
Tester strain TA98 showed negative responses over the entire dose range, i.e. no dose-related, two-fold, increase in the number of revertants. In tester strain TA100, Benzylsalbutamon HCL induced up to 4.5- and 4.0 -fold, dose related, increases in the number of revertant colonies compated to the solvent control in the absence and presence of S9 -miox, respectively.
Based on the results of this study it is concluded that Benzylsalbutamon HCL is mutagenic in the Salmonella typhimurium reverse mutation assay in strain TA100.
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.