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Toxicological information

Acute Toxicity: oral

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Administrative data

Endpoint:
acute toxicity: oral
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
comparable to guideline study with acceptable restrictions

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1972
Report date:
1972

Materials and methods

Test guideline
Qualifier:
no guideline followed
Principles of method if other than guideline:
similarities to OECD guideline 401
GLP compliance:
not specified
Test type:
standard acute method
Limit test:
yes

Test material

Constituent 1
Chemical structure
Reference substance name:
Calcium bis[4-[[1-[[(2-methylphenyl)amino]carbonyl]-2-oxopropyl]azo]-3-nitrobenzenesulphonate]
EC Number:
235-558-6
EC Name:
Calcium bis[4-[[1-[[(2-methylphenyl)amino]carbonyl]-2-oxopropyl]azo]-3-nitrobenzenesulphonate]
Cas Number:
12286-66-7
Molecular formula:
C17H16N4O7S.1/2Ca
IUPAC Name:
calcium bis(4-[(E)-2-{1-[(2-methylphenyl)carbamoyl]-2-oxopropyl}diazen-1-yl]-3-nitrobenzene-1-sulfonate)

Test animals

Species:
rat
Strain:
other: CFE (RAC, SPF) strain
Sex:
male/female
Details on test animals or test system and environmental conditions:
TEST ANIMALS
- Source: /
- Age at study initiation: /
- Weight at study initiation: 126 - 139 g
- Fasting period before study: /
- Housing: groups of 5 in macrolon cages
- Diet (e.g. ad libitum): Nafag ad libitum
- Water (e.g. ad libitum): ad libitum
- Acclimation period: 5d

ENVIRONMENTAL CONDITIONS
- Temperature (°C): 22 +/- 1
- Humidity (%): 55 +/- 5
- Air changes (per hr): /
- Photoperiod (hrs dark / hrs light): 14h

Administration / exposure

Route of administration:
oral: gavage
Vehicle:
CMC (carboxymethyl cellulose)
Remarks:
0.5 % in tap water
Details on oral exposure:
VEHICLE
- Concentration in vehicle: 25%
- total volume: 20 ml/kg bw

MAXIMUM DOSE VOLUME APPLIED: 10.000 mg/kg bw
Doses:
5000 and 10000 mg/kg bw
No. of animals per sex per dose:
5000 mg/kg bw : 5 per sex and dose
10000 mg7kg bw : 3 males and 2 females
Control animals:
no
Details on study design:
- Duration of observation period following administration: 8d
- Frequency of observations and weighing: /
- Necropsy of survivors performed: yes
- Other examinations performed: clinical signs, body weight,organ weights, histopathology, other: no
Statistics:
no

Results and discussion

Effect levels
Sex:
male/female
Dose descriptor:
LD50
Effect level:
> 10 000 mg/kg bw
Mortality:
no martalities
Clinical signs:
no clinical symptoms
Body weight:
pre-test: 131 g and 129 g
day 8: 18 3g and 184 g
Other findings:
yellow stained feces

Applicant's summary and conclusion

Interpretation of results:
GHS criteria not met
Conclusions:
The acute oral LD50 was established to be > 10000 mg/kg bw.