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EC number: 256-435-3 | CAS number: 49701-24-8
- 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
Skin sensitisation
Administrative data
- Endpoint:
- skin sensitisation: in vivo (LLNA)
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2008
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: well performed OECD study with GLP
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 008
- Report date:
- 2008
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 429 (Skin Sensitisation: Local Lymph Node Assay)
- Deviations:
- no
- GLP compliance:
- yes
- Type of study:
- mouse local lymph node assay (LLNA)
Test material
- Reference substance name:
- 4-amino-2,5-dimethoxy-N-methylbenzenesulphonamide
- EC Number:
- 256-435-3
- EC Name:
- 4-amino-2,5-dimethoxy-N-methylbenzenesulphonamide
- Cas Number:
- 49701-24-8
- Molecular formula:
- C9H14N2O4S
- IUPAC Name:
- 4-amino-2,5-dimethoxy-N-methylbenzene-1-sulfonamide
- Details on test material:
- purity: 92.5 %
Constituent 1
In vivo test system
Test animals
- Species:
- mouse
- Strain:
- other: CBA/CaOlaHsd
- Sex:
- female
- Details on test animals and environmental conditions:
- TEST ANIMALS
- Source: Harlan Netherlands, B.V. Postbus 6174, NL - 5960 AD Horst / The Netherlands
- Age at study initiation: 8 - 9 weeks
- Weight at study initiation: 18.8 - 22.7 g
- Housing: single; Makrolon Type I cages, with wire mesh top, granulated soft wood bedding
- Diet: pelleted standard diet, ad libitum (Harlan Winkelmann GmbH, D-33178 Borchen)
- Water: tap water, ad libitum,
- Acclimation period: At least 5 days prior to the start of dosing under test conditions after health examination.
ENVIRONMENTAL CONDITIONS
- Temperature (°C): 22+-3
- Humidity (%): 30 - 70
- Air changes (per hr):
- Photoperiod: artificial light 6.00 a.m. - 6.00 p.m.
Study design: in vivo (LLNA)
- Vehicle:
- dimethyl sulphoxide
- Concentration:
- 0, 2.5, 5, 10 %
- No. of animals per dose:
- 4
- Positive control substance(s):
- hexyl cinnamic aldehyde (CAS No 101-86-0)
Results and discussion
- Positive control results:
- Positive control with alpha -Hexylcinnamaldehyde in acetone:olive oil (4+1) yielded in an EC3 value 9.9 .
In vivo (LLNA)
Resultsopen allclose all
- Parameter:
- SI
- Remarks on result:
- other: see above
- Parameter:
- other: disintegrations per minute (DPM)
- Remarks on result:
- other: see Remark
- Remarks:
- Vehicle: dimethylsulfoxide Test item Calculation Result concentration Group Measurement DPM-BG number of DPM per (%) DPM lymph nodes lymph node S.I --- BGI 59 --- --- --- --- --- BGII 59 --- --- --- --- --- 1 8322 8267 8 1033.3 2.5 2 8497 8442 8 1055.2 1.02 5 3 8367 8312 8 1038.9 1.01 10 4 10390 10335 8 1291.8 1.25 BG = Background (1 ml 5% trichloroacetic acid) in duplicate The EC3 value could not be calculated, since all S.I.´s are below 3.
Applicant's summary and conclusion
- Interpretation of results:
- not sensitising
- Remarks:
- Migrated information Criteria used for interpretation of results: EU
- Conclusions:
- The test item Chinonbasesulfmethylamide TF was found to be not a skin sensitiser under the described conditions.
- Executive summary:
In order to study a possible contact allergenic potential of Chinonbasesulfmethylamide TF, three groups each of four female mice were treated daily with the test item at concentrations of 2.5, 5, and 10% (w/v) in dimethylsulfoxide by topical application to the dorsum of each ear lobe (left and right) for three consecutive days. A control group of four mice was treated with the vehicle (dimethylsulfoxide) only. Five days after the first topical application the mice were injected intravenously into a tail vein with radio-labelled
thymidine (3H-methyl thymidine). Approximately five hours after intravenous injection, the mice were sacrificed, the draining auricular lymph nodes excised and pooled per group.
Single cell suspensions of lymph node cells were prepared from pooled lymph nodes, which were subsequently washed and incubated with trichloroacetic acid overnight. The proliferative capacity of pooled lymph node cells was determined by the incorporation of
3H-methyl thymidine measured in a ß-scintillation counter.
All treated animals survived the scheduled study period and no signs of toxicity were observed.
A test item is regarded as a sensitiser in the LLNA if the exposure to one or more test concentration resulted in 3-fold or greater increase in incorporation of 3HTdR compared with concurrent controls, as indicated by the Stimulation Index (S.I.). The estimated
concentration of test item required to produce a S.I. of 3 is referred to as the EC3 value.
In this study Stimulation Indices of 1.02, 1.01 and 1.25 were determined with the test item at concentrations of 2.5, 5, and 10% in dimethylsulfoxide.
The EC3 value could not be calculated, since none of the tested concentrations induced an S.I. greater than 3
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