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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
immunotoxicity
Type of information:
experimental study
Adequacy of study:
supporting study
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
other: Original reference in Japanese.

Data source

Reference
Reference Type:
publication
Title:
Effects of ethylenethiourea on the functions of mouse lymphocytes.
Author:
Teshima R, Ikebuchi H and Terao T.
Year:
1982
Bibliographic source:
Eisei Skikensho Hokoku 100: 44-48

Materials and methods

Principles of method if other than guideline:
No data
GLP compliance:
not specified

Test material

Constituent 1
Chemical structure
Reference substance name:
Imidazolidine-2-thione
EC Number:
202-506-9
EC Name:
Imidazolidine-2-thione
Cas Number:
96-45-7
Molecular formula:
C3H6N2S
IUPAC Name:
imidazolidine-2-thione
Details on test material:
Other name : Ethylenethiourea (ETU)

Test animals

Species:
mouse
Sex:
not specified

Administration / exposure

Route of administration:
other: no data
Doses / concentrations
Remarks:
Doses / Concentrations:
460 mg/kg
Basis:

Results and discussion

Results of examinations

Details on results:
Ethylenethiourea suppressed the primary and secondary immune response in  mice and to a lesser extent also inhibited the primary immune response mitogen-stimulated lymphocyte proliferation in vitro. Studies in T cells revealed that ethylenethiourea suppressed the activity of both helper T cells and suppressor T cells.

Applicant's summary and conclusion