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Diss Factsheets

Toxicological information

Skin sensitisation

Currently viewing:

Administrative data

Endpoint:
skin sensitisation: in vivo (non-LLNA)
Remarks:
in vivo
Type of information:
(Q)SAR
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
results derived from a valid (Q)SAR model and falling into its applicability domain, with limited documentation / justification
Justification for type of information:
Data is from OECD QSAR Toolbox version 3.3 and the supporting QMRF report has been attached.

Data source

Reference
Reference Type:
other: Predicted data.
Title:
[R]: not sensitising; Estimation for Skin Sensitisation for CAS 873-55-2
Author:
Sustainability Support Services (Europe) AB
Year:
2017
Bibliographic source:
OECD QSAR toolbox version 3.3.

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
other: As mentioned below.
Principles of method if other than guideline:
Prediction is done using OECD QSAR Toolbox version 3.3.
GLP compliance:
not specified
Type of study:
guinea pig maximisation test
Justification for non-LLNA method:
Not specified.

Test material

Constituent 1
Chemical structure
Reference substance name:
Sodium benzenesulphinate
EC Number:
212-842-8
EC Name:
Sodium benzenesulphinate
Cas Number:
873-55-2
Molecular formula:
C6H6O2S.Na
IUPAC Name:
sodium benzenesulphinate
Details on test material:
SMILES:O=S(c1ccccc1)O{-}.[Na]{+}
Specific details on test material used for the study:
- Name of test material (as cited in study report): sodium benzenesulfinate
- Molecular formula: C6H6O2SNa
- Molecular weight: 164.16 g/mol
- Smiles notation: c1(ccccc1)S(=O)[O-].[Na+]
- InChl: 1S/C6H6O2S.Na/c7-9(8)6-4-2-1-3-5-6;/h1-5H,(H,7,8);/q;+1/p-1
- Substance type: Organic
- Physical state: Solid

In vivo test system

Test animals

Species:
guinea pig
Strain:
Dunkin-Hartley
Sex:
male/female
Details on test animals and environmental conditions:
No data available.

Study design: in vivo (non-LLNA)

Induction
Route:
epicutaneous, occlusive
Vehicle:
not specified
Challenge
Route:
epicutaneous, occlusive
Vehicle:
not specified
Day(s)/duration:
24 hour
No. of animals per dose:
20 animals
Details on study design:
No data available
Challenge controls:
No data available
Positive control substance(s):
not specified

Study design: in vivo (LLNA)

Statistics:
No data available

Results and discussion

In vivo (non-LLNA)

Results
Reading:
other: Challenge
Hours after challenge:
24
Group:
test chemical
No. with + reactions:
0
Total no. in group:
20
Clinical observations:
No skin sensitization effect were observed.
Remarks on result:
no indication of skin sensitisation

Any other information on results incl. tables

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

((((((((((((("a" or "b" or "c" or "d" )  and ("e" and ( not "f") )  )  and ("g" and ( not "h") )  )  and ("i" and ( not "j") )  )  and ("k" and ( not "l") )  )  and "m" )  and "n" )  and "o" )  and ("p" and ( not "q") )  )  and "r" )  and ("s" and ( not "t") )  )  and ("u" and ( not "v") )  )  and ("w" and "x" )  )

Domain logical expression index: "a"

Referential boundary: The target chemical should be classified as Aryl OR Overlapping groups OR Sulfinic acid by Organic Functional groups (nested) ONLY

Domain logical expression index: "b"

Referential boundary: The target chemical should be classified as Aryl OR Overlapping groups OR Sulfinic acid by Organic Functional groups (nested) ONLY

Domain logical expression index: "c"

Referential boundary: The target chemical should be classified as Aromatic Carbon [C] OR Miscellaneous sulfide (=S) or oxide (=O) OR Olefinic carbon [=CH- or =C<] OR Suflur {v+4} or {v+6} by Organic functional groups (US EPA) ONLY

Domain logical expression index: "d"

Referential boundary: The target chemical should be classified as Anion OR Aromatic compound OR Cation OR Sulfinic acid derivative by Organic functional groups, Norbert Haider (checkmol) ONLY

Domain logical expression index: "e"

Referential boundary: The target chemical should be classified as No alert found by DNA binding by OASIS v.1.3

Domain logical expression index: "f"

Referential boundary: The target chemical should be classified as AN2 OR AN2 >> Nucleophilic addition to alpha, beta-unsaturated carbonyl compounds OR AN2 >> Nucleophilic addition to alpha, beta-unsaturated carbonyl compounds >> alpha, beta-Unsaturated Aldehydes OR AN2 >> Schiff base formation OR AN2 >> Schiff base formation >> alpha, beta-Unsaturated Aldehydes OR Michael addition OR Michael addition >> Quinone type compounds OR Michael addition >> Quinone type compounds >> Quinone methides OR Radical OR Radical >> ROS formation after GSH depletion OR Radical >> ROS formation after GSH depletion >> Quinone methides OR SN1 OR SN1 >> Alkylation after metabolically formed carbenium ion species OR SN1 >> Alkylation after metabolically formed carbenium ion species >> Polycyclic Aromatic Hydrocarbon Derivatives OR SN2 OR SN2 >> Alkylation, direct acting epoxides and related after P450-mediated metabolic activation OR SN2 >> Alkylation, direct acting epoxides and related after P450-mediated metabolic activation >> Polycyclic Aromatic Hydrocarbon Derivatives OR SN2 >> Direct acting epoxides formed after metabolic activation OR SN2 >> Direct acting epoxides formed after metabolic activation >> Quinoline Derivatives OR SN2 >> SN2 at an activated carbon atom OR SN2 >> SN2 at an activated carbon atom >> Quinoline Derivatives by DNA binding by OASIS v.1.3

Domain logical expression index: "g"

Referential boundary: The target chemical should be classified as No alert found by DNA binding by OECD

Domain logical expression index: "h"

Referential boundary: The target chemical should be classified as Michael addition OR Michael addition >> P450 Mediated Activation to Quinones and Quinone-type Chemicals OR Michael addition >> P450 Mediated Activation to Quinones and Quinone-type Chemicals >> Arenes OR Michael addition >> P450 Mediated Activation to Quinones and Quinone-type Chemicals >> Polycyclic (PAHs) and heterocyclic (HACs) aromatic hydrocarbons-Michael addition by DNA binding by OECD

Domain logical expression index: "i"

Referential boundary: The target chemical should be classified as No alert found by Protein binding by OECD

Domain logical expression index: "j"

Referential boundary: The target chemical should be classified as Michael addition OR Michael addition >> Polarised Alkenes OR Michael addition >> Polarised Alkenes >> Polarised alkene - ketones OR Michael addition >> Polarised Alkenes >> Polarised alkene - pyridines by Protein binding by OECD

Domain logical expression index: "k"

Referential boundary: The target chemical should be classified as Not possible to classify according to these rules (GSH) by Protein binding potency

Domain logical expression index: "l"

Referential boundary: The target chemical should be classified as Highly reactive (GSH) OR Highly reactive (GSH) >> 3-Alken-2-ones (MA) by Protein binding potency

Domain logical expression index: "m"

Referential boundary: The target chemical should be classified as High (Class III) by Toxic hazard classification by Cramer (with extensions) ONLY

Domain logical expression index: "n"

Referential boundary: The target chemical should be classified as Bioavailable by Lipinski Rule Oasis ONLY

Domain logical expression index: "o"

Similarity boundary:Target: O=S(c1ccccc1)O{-}.[Na]{+}
Threshold=10%,
Dice(Atom centered fragments)
Atom type; Count H attached; Hybridization

Domain logical expression index: "p"

Referential boundary: The target chemical should be classified as Not categorized by Repeated dose (HESS)

Domain logical expression index: "q"

Referential boundary: The target chemical should be classified as Aliphatic nitriles (Hepatotoxicity) Rank B by Repeated dose (HESS)

Domain logical expression index: "r"

Similarity boundary:Target: O=S(c1ccccc1)O{-}.[Na]{+}
Threshold=40%,
Dice(Atom centered fragments)
Atom type; Count H attached; Hybridization

Domain logical expression index: "s"

Referential boundary: The target chemical should be classified as Inclusion rules not met by Eye irritation/corrosion Inclusion rules by BfR

Domain logical expression index: "t"

Referential boundary: The target chemical should be classified as Organic sulphonic salts by Eye irritation/corrosion Inclusion rules by BfR

Domain logical expression index: "u"

Referential boundary: The target chemical should be classified as Not categorized by OECD HPV Chemical Categories

Domain logical expression index: "v"

Referential boundary: The target chemical should be classified as Amorphous silica silicates OR Nitrates OR Sodium chlorite/Chlorine dioxide OR Soluble silicates by OECD HPV Chemical Categories

Domain logical expression index: "w"

Parametric boundary:The target chemical should have a value of log Kow which is >= -4.91

Domain logical expression index: "x"

Parametric boundary:The target chemical should have a value of log Kow which is <= -1.73

Applicant's summary and conclusion

Interpretation of results:
other: not sensitising
Conclusions:
Benzenesulfinate(873-55-2) was observed for its skin sensitizing potential.Benzenesulfinate was considered to be non sensitizing in Dunkin-Hartley guinea pig..
Executive summary:

The skin sensitization potential of Benzenesulfinate(873-55-2) was estimatedby SSS (2017) using OECD QSAR toolbox v3.3 with log kow as the primary descriptor and considering the six closest read across substances. Benzenesulfinate (873-55-2) was predicted to be non sensitizing to the skin of male and female Dunkin-Hartley guinea pig.