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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: other routes
Type of information:
experimental study
Adequacy of study:
supporting study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
study well documented, meets generally accepted scientific principles, acceptable for assessment

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1981
Report date:
1981

Materials and methods

Test guideline
Qualifier:
no guideline followed
Principles of method if other than guideline:
according to BASF-internal standard(s)
GLP compliance:
no
Limit test:
yes

Test material

Constituent 1
Chemical structure
Reference substance name:
Calcium 4,5-dichloro-2-[[4,5-dihydro-3-methyl-5-oxo-1-(3-sulphonatophenyl)-1H-pyrazol-4-yl]azo]benzenesulphonate
EC Number:
265-634-4
EC Name:
Calcium 4,5-dichloro-2-[[4,5-dihydro-3-methyl-5-oxo-1-(3-sulphonatophenyl)-1H-pyrazol-4-yl]azo]benzenesulphonate
Cas Number:
65212-77-3
Molecular formula:
C16H12Cl2N4O7S2.Ca
IUPAC Name:
calcium 4,5-dichloro-2-{[3-methyl-5-oxo-1-(3-sulfonatophenyl)-4,5-dihydro-1H-pyrazol-4-yl]diazenyl}benzenesulfonate

Test animals

Species:
rat
Strain:
Sprague-Dawley
Sex:
male/female
Details on test animals or test system and environmental conditions:
TEST ANIMALS
- Source: WILHELM GASSNER, SULZFELD
- Age at study initiation: 12 weeks
- Weight at study initiation: no data
- Housing: groups of 5
- Diet: ad libitum
- Water: ad libitum
- Acclimation period: 1 weeks
- Fasting: 16h before application

ENVIRONMENTAL CONDITIONS
- Temperature (°C): 20-26
- Humidity (%): 45-75
- Air changes (per hr): no data
- Photoperiod (hrs dark / hrs light): 12/12

IN-LIFE DATES: From: To:

Administration / exposure

Route of administration:
intraperitoneal
Vehicle:
CMC (carboxymethyl cellulose)
Remarks:
0.5 % CMC solution + 1-2 drops of castor oil
Details on exposure:
2000 mg/kg bw
10 ml/kg bw

single injection intraparitoneal
Doses:
2000 mg/kg
No. of animals per sex per dose:
5
Control animals:
no
Details on study design:
- Duration of observation period following administration: 14 days
- Frequency of observations and weighing: immediately, days 2, 7 and 13
- Necropsy of survivors performed: yes

Results and discussion

Effect levels
Sex:
male/female
Dose descriptor:
LD50
Effect level:
> 2 000 mg/kg bw
Based on:
test mat.
Mortality:
none
Clinical signs:
Dyspnea, apathy, staggering, ruffled fur, exsiccosis, poor general state
Gross pathology:
Sacrificed animals: intraabdominal substance incorporations; liver: truncated borders

Applicant's summary and conclusion