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Toxicological information

Toxicity to reproduction

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Administrative data

Endpoint:
screening for reproductive / developmental toxicity
Type of information:
experimental study
Adequacy of study:
key study
Study period:
1994
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
data from handbook or collection of data
Remarks:
Data came from the SIDS dossier on CAS No. 81-11-8 that was accepted at SIAM 4 and posted on the OECD website.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1994

Materials and methods

Test guideline
Qualifier:
equivalent or similar to guideline
Guideline:
other: OECD preliminary reproduction toxicity screening test
Deviations:
not applicable
GLP compliance:
yes
Limit test:
yes

Test material

Constituent 1
Chemical structure
Reference substance name:
4,4'-diaminostilbene-2,2'-disulphonic acid
EC Number:
201-325-2
EC Name:
4,4'-diaminostilbene-2,2'-disulphonic acid
Cas Number:
81-11-8
Molecular formula:
C14H14N2O6S2
IUPAC Name:
2,2'-ethene-1,2-diylbis(5-aminobenzenesulfonic acid)
Details on test material:
Purity of the test material was 92.02%.

Test animals

Species:
rat
Strain:
Crj: CD(SD)
Sex:
male/female
Details on test animals or test system and environmental conditions:
no data

Administration / exposure

Route of administration:
oral: gavage
Vehicle:
CMC (carboxymethyl cellulose)
Details on exposure:
no data
Details on mating procedure:
no data
Analytical verification of doses or concentrations:
not specified
Details on analytical verification of doses or concentrations:
no data
Duration of treatment / exposure:
males: 41 days including 14 days before mating;
females: from 14 days before mating to day 3 of lactation
Frequency of treatment:
daily
Details on study schedule:
no data
Doses / concentrations
Remarks:
Doses / Concentrations:
40, 200 or 1000 mg/kg/day
Basis:
actual ingested
No. of animals per sex per dose:
10
Control animals:
yes, concurrent vehicle
Details on study design:
no data
Positive control:
no data

Examinations

Parental animals: Observations and examinations:
no data
Oestrous cyclicity (parental animals):
no data
Sperm parameters (parental animals):
no data
Litter observations:
no data
Postmortem examinations (parental animals):
no data
Postmortem examinations (offspring):
no data
Statistics:
no data
Reproductive indices:
no data
Offspring viability indices:
no data

Results and discussion

Results: P0 (first parental generation)

General toxicity (P0)

Clinical signs:
no effects observed
Body weight and weight changes:
no effects observed
Food consumption and compound intake (if feeding study):
no effects observed
Organ weight findings including organ / body weight ratios:
no effects observed
Histopathological findings: non-neoplastic:
no effects observed
Other effects:
no effects observed

Reproductive function / performance (P0)

Reproductive function: oestrous cycle:
no effects observed
Reproductive function: sperm measures:
no effects observed
Reproductive performance:
no effects observed

Details on results (P0)

-no effects on clinical signs, body weight changes, food consumption or necropsy findings in either sex
-testicular and epididymal weights were similar among all four groups (No histopathological changes in these reproductive organs of the male rats.) -Parental animals exhibited no effects on reproductive parameters including the copulation index, fertility index, gestation index, delivery index, parturition or maternal behavior.

Effect levels (P0)

Dose descriptor:
NOAEL
Effect level:
>= 1 000 mg/kg bw/day (actual dose received)
Sex:
male/female
Basis for effect level:
other: see 'Remark'

Results: F1 generation

General toxicity (F1)

Clinical signs:
no effects observed
Mortality / viability:
no mortality observed
Body weight and weight changes:
no effects observed
Sexual maturation:
no effects observed
Organ weight findings including organ / body weight ratios:
no effects observed
Gross pathological findings:
no effects observed
Histopathological findings:
no effects observed

Details on results (F1)

There were no significant differences in the number of offspring or live offspring, sex ratio, live birth index, viability index, or body weight. No abnormal findings attributable to the test substance were noted in external examination, clinical signs or necropsy of the offspring.

Effect levels (F1)

Dose descriptor:
NOAEL
Generation:
F1
Effect level:
>= 1 000 mg/kg bw/day (actual dose received)
Sex:
male/female
Basis for effect level:
other: see 'Remark'

Overall reproductive toxicity

Reproductive effects observed:
not specified

Applicant's summary and conclusion

Conclusions:
The substance is not considered to be toxic to reproduction.
Executive summary:

The substance is not considered to be toxic to reproduction.