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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
acute toxicity: oral
Type of information:
(Q)SAR
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Justification for type of information:
QSAR prediction: migrated from IUCLID 5.6

Data source

Reference
Reference Type:
other: predicted data
Title:
25.12.2012 17:50 [R]: 1.55E3 mg/kg bw "Human Health Hazards#Acute Toxicity" for 20570-96-1
Author:
Sustainability Support Services (Europe) AB
Year:
2012
Bibliographic source:
QSAR Toolbox version 3.0

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
other: no information on method;OECD Guideline 401 (Acute Oral Toxicity)
Principles of method if other than guideline:
Data is predicted by QSAR toolbox version 2.3, ;Directive 92/69/EEC, B.1;Directive 92/69/EEC, B.3;OECD Guideline 402 (Acute Dermal Toxicity);EU Method B.1 (Acute Toxicity (Oral)) Cited as Directive 84/449/EEC, B.1;84/449/EWG (Official Journal)
GLP compliance:
no
Test type:
other: LD50;standard acute method;no data

Test material

Constituent 1
Chemical structure
Reference substance name:
Benzylhydrazine dihydrochloride
EC Number:
243-887-1
EC Name:
Benzylhydrazine dihydrochloride
Cas Number:
20570-96-1
Molecular formula:
C7H10N2.2ClH
IUPAC Name:
benzylhydrazine dihydrochloride
Details on test material:
Substance name - Benzylhydrazine dihydrochloride
Substance type : organic
Molecular Formula: C7H10N2
SMILES:c1(CNN)ccccc1_Cl_Cl

Test animals

Species:
rat
Strain:
Wistar
Sex:
male/female

Administration / exposure

Route of administration:
oral: unspecified
Vehicle:
unchanged (no vehicle)
Control animals:
not specified

Results and discussion

Effect levels
Sex:
male/female
Dose descriptor:
LD50
Effect level:
1 545.075 mg/kg bw
Based on:
test mat.

Any other information on results incl. tables






The prediction was based on dataset comprised from the following descriptors: LD50
Estimation method: Takes average value from the 4 nearest neighbours
Domain logical expression:Result: In Domain

(((((("a" and "b" ) and ("c" and ( not "d") ) ) and "e" ) and "f" ) and ("g" and ( not "h") ) ) and ("i" and "j" ) )

Domain logical expression index: "a"

Similarity boundary:Target: c1(CNN)ccccc1_Cl_Cl
Threshold=50%,
Dice(Atom pairs)

Domain logical expression index: "b"

Similarity boundary:Target: c1(CNN)ccccc1_Cl_Cl
Threshold=50%,
Dice(Atom pairs)

Domain logical expression index: "c"

Referential boundary: The target chemical should be classified as No alert found by Protein binding alerts for skin sensitization by OASIS v1.1

Domain logical expression index: "d"

Referential boundary: The target chemical should be classified as Acylation OR Acylation >> Acyl transfer via nucleophilic addition reaction OR Acylation >> Acyl transfer via nucleophilic addition reaction >> Isocyanates and isothiocyanates OR Acylation >> Direct acylation involving a leaving group OR Acylation >> Direct acylation involving a leaving group >> N-acylamides OR Michael addition OR Michael addition >> Michael addition on conjugated systems with electron withdrawing group OR Michael addition >> Michael addition on conjugated systems with electron withdrawing group >> Cyanoalkenes OR Michael addition >> Michael type addition on vinyl pirydines and activated ethenylarenes OR Michael addition >> Michael type addition on vinyl pirydines and activated ethenylarenes >> Vinyl pyridines OR SN2 OR SN2 >> Interchange reaction with sulphur containing compounds OR SN2 >> Interchange reaction with sulphur containing compounds >> Thiols and disulfide compounds OR SN2 >> Nucleophilic substitution on benzylic carbon atom OR SN2 >> Nucleophilic substitution on benzylic carbon atom >> alpha-activated benzyls by Protein binding alerts for skin sensitization by OASIS v1.1

Domain logical expression index: "e"

Referential boundary: The target chemical should be classified as No superfragment by Superfragments

Domain logical expression index: "f"

Referential boundary: The target chemical should be classified as Biodegrades Fast by Biodeg probability (Biowin 1)

Domain logical expression index: "g"

Referential boundary: The target chemical should be classified as Not classified by Oncologic Primary Classification

Domain logical expression index: "h"

Referential boundary: The target chemical should be classified as Aromatic Amine Type Compounds OR Halogenated Aromatic Hydrocarbon Type Compounds OR ortho-Haloganated Heterocyclic Type Compounds OR Phenol Type Compounds by Oncologic Primary Classification

Domain logical expression index: "i"

Parametric boundary:The target chemical should have a value of log Kow which is >= 0.346

Domain logical expression index: "j"

Parametric boundary:The target chemical should have a value of log Kow which is <= 0.665

Applicant's summary and conclusion

Interpretation of results:
Toxicity Category IV
Remarks:
Migrated information Toxicity Category IV LD50 > 300 mg/kg and < 2000 mg/kg;Toxicity Category IV LD50 > 300 and < 2000 mg/kg;harmful;not classified Criteria used for interpretation of results: EU
Conclusions:
The acute oral median lethal dose (LD50) of Benzylhydrazine dihydrochloride in Rat Sprague-Dawley was estimated to be 1545.07 mg/kg bw.
Executive summary:

The acute oral median lethal dose (LD50) of Benzylhydrazine dihydrochloride in Rat Sprague-Dawley was estimated to be 1545.07 mg/kg bw.This value indicates that Benzylhydrazine dihydrochloride exhibits acute toxicity by the oral route in category 4.