Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Administrative data

Endpoint:
skin sensitisation: in vivo (LLNA)
Type of information:
migrated information: read-across based on grouping of substances (category approach)
Adequacy of study:
supporting study
Study period:
2015
Reliability:
other: Prediction confidence is measured by the p-value = 0.0625
Rationale for reliability incl. deficiencies:
other: QSAR Toolbox: weak confidence

Data source

Reference
Reference Type:
other: QSAR
Title:
Unnamed
Year:
2015
Report date:
2015

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 429 (Skin Sensitisation: Local Lymph Node Assay)
GLP compliance:
no
Type of study:
mouse local lymph node assay (LLNA)

Test material

Constituent 1
Chemical structure
Reference substance name:
5-amino-2-chlorotoluene-4-sulphonic acid
EC Number:
201-839-7
EC Name:
5-amino-2-chlorotoluene-4-sulphonic acid
Cas Number:
88-53-9
Molecular formula:
C7H8ClNO3S
IUPAC Name:
2-amino-5-chloro-4-methylbenzene-1-sulfonic acid
Details on test material:
SMILES:Cc1cc(N)c(S(O)(=O)=O)cc1Cl

In vivo test system

Test animals

Species:
mouse

Results and discussion

Any other information on results incl. tables

The prediction was based on dataset comprised from the following descriptors: "Skin Sensitisation"
Estimation method: Takes highest mode value from the 5 nearest neighbours
Domain  logical expression:Result: In Domain

(("a" and "b" )  and ("c" and "d" )  )

Domain logical expression index: "a"

Referential boundary: The target chemical should be classified as Anilines (Acute toxicity) by US-EPA New Chemical Categories

Domain logical expression index: "b"

Similarity boundary:Target: Cc1cc(N)c(S(O)(=O)=O)cc1Cl
Threshold=50%,
Dice(Atom pairs;Atom centered fragments)
Atom type; Count H attached; Hybridization

Domain logical expression index: "c"

Parametric boundary:The target chemical should have a value of log Kow which is >= -3

Domain logical expression index: "d"

Parametric boundary:The target chemical should have a value of log Kow which is <= 1.42

Applicant's summary and conclusion

Interpretation of results:
other: Negative
Conclusions:
Based on the analysis using OECD QSAR Toolbox, the target substance is considered to be negative for skin sensitisation.
Executive summary: