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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
eye irritation: in vivo
Type of information:
experimental study
Adequacy of study:
key study
Study period:
1990-11-21 to 1991-02-14
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Guideline-conform study under GLP without deviations.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1991
Report date:
1991

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to guideline
Guideline:
OECD Guideline 405 (Acute Eye Irritation / Corrosion)
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method B.5 (Acute Toxicity: Eye Irritation / Corrosion)
Deviations:
no
GLP compliance:
yes

Test material

Constituent 1
Chemical structure
Reference substance name:
Dilithium disodium (5,5'-diamino-(μ-4,4'-dihydroxy-1:2-κ-2,O4,O4',-3,3'-[3,3'-dihydroxy-1:2-κ-2-O3,O3'-biphenyl-4,4'-ylenebisazo-1:2-(N3,N4-η:N3',N4'-η)]-dinaphthalene-2,7-disulfonato(8)))dicuprate(2-)
EC Number:
407-230-4
EC Name:
Dilithium disodium (5,5'-diamino-(μ-4,4'-dihydroxy-1:2-κ-2,O4,O4',-3,3'-[3,3'-dihydroxy-1:2-κ-2-O3,O3'-biphenyl-4,4'-ylenebisazo-1:2-(N3,N4-η:N3',N4'-η)]-dinaphthalene-2,7-disulfonato(8)))dicuprate(2-)
Cas Number:
126637-70-5
Molecular formula:
Hill formula: C32 H16 Cu2 Li2 N6 Na2 O16 S4 CAS formula: C32 H16 Cu2 N6 O16 S4. 2Li 2Na
IUPAC Name:
dicopper(2+) dilithium(1+) disodium 4,4'-bis[2-(8-amino-1-oxido-3,6-disulfonatonaphthalen-2-yl)diazen-1-yl]-[1,1'-biphenyl]-3,3'-bis(olate)

Test animals / tissue source

Species:
rabbit
Strain:
New Zealand White
Details on test animals or tissues and environmental conditions:
TEST ANIMALS
- Source: Broekman Institute, Someren, The Netherlands.
- Age at study initiation: Approx. 12 weeks
- Weight at study initiation: 2789 - 2953 grams
- Housing: Individually in cages with perforated floors equipped with an automatic drinking-system
- Diet (e.g. ad libitum): Standard laboratory rabbit diet approx. 100 gram per day.
- Water (e.g. ad libitum): Free access to tap-water diluted with decalcified water.
- Acclimation period: At least five days before start of treatment under test conditions.

ENVIRONMENTAL CONDITIONS
- Temperature (°C): 21 °C
- Humidity (%): 55%
- Air changes (per hr): 15
- Photoperiod (hrs dark / hrs light): 12 / 12

IN-LIFE DATES: From: 1990-11-21 To: 1990-12-03

Test system

Vehicle:
unchanged (no vehicle)
Controls:
no
Amount / concentration applied:
100 mg
Duration of treatment / exposure:
48 h
Observation period (in vivo):
7 d
Number of animals or in vitro replicates:
3
Details on study design:
REMOVAL OF TEST SUBSTANCE
- Washing (if done): Immediately after fluorescein examination on day 2, both eyes of all three animals were rlnsed with approx 100 ml tepid tap-water
- Time after start of exposure: 48 h

Results and discussion

In vivo

Resultsopen allclose all
Irritation parameter:
conjunctivae score
Remarks:
(redness)
Basis:
mean
Time point:
other: overall at 24, 48 and 72 h
Score:
1.7
Max. score:
2
Reversibility:
fully reversible within: 7 d
Irritation parameter:
conjunctivae score
Remarks:
(redness)
Basis:
animal #1
Time point:
other: overall at 24, 48 and 72 h
Score:
1.7
Max. score:
2
Reversibility:
not fully reversible within: 7 d
Irritation parameter:
conjunctivae score
Remarks:
(redness)
Basis:
animal #2
Time point:
other: overall at 24, 48 and 72 h
Score:
2
Max. score:
2
Reversibility:
fully reversible within: 7 d
Irritation parameter:
conjunctivae score
Remarks:
(redness)
Basis:
animal #3
Time point:
other: overall at 24, 48 and 72 h
Score:
1.7
Max. score:
2
Reversibility:
fully reversible within: 7 d
Irritation parameter:
chemosis score
Basis:
mean
Time point:
other: overall at 24, 48 and 72 h
Score:
1.3
Max. score:
2
Reversibility:
fully reversible within: 7 d
Irritation parameter:
chemosis score
Basis:
animal #1
Time point:
other: overall at 24, 48 and 72 h
Score:
1
Max. score:
2
Reversibility:
fully reversible within: 72 h
Irritation parameter:
chemosis score
Basis:
animal #2
Time point:
other: overall at 24, 48 and 72 h
Score:
2
Max. score:
2
Reversibility:
fully reversible within: 7 d
Irritation parameter:
chemosis score
Basis:
animal #3
Time point:
other: overall at 24, 48 and 72 h
Score:
1.3
Max. score:
2
Reversibility:
fully reversible within: 7 d
Irritation parameter:
cornea opacity score
Basis:
mean
Time point:
other: overall at 24, 48 and 72 h
Score:
0
Max. score:
0
Irritation parameter:
cornea opacity score
Basis:
animal #1
Time point:
other: overall at 24, 48 and 72 h
Score:
0
Max. score:
0
Irritation parameter:
cornea opacity score
Basis:
animal #2
Time point:
other: overall at 24, 48 and 72 h
Score:
0
Max. score:
0
Irritation parameter:
cornea opacity score
Basis:
animal #3
Time point:
other: overall at 24, 48 and 72 h
Score:
0
Max. score:
0
Irritation parameter:
iris score
Basis:
mean
Time point:
other: overall at 24, 48 and 72 h
Score:
0
Max. score:
0
Irritation parameter:
iris score
Basis:
animal #1
Time point:
other: overall at 24, 48 and 72 h
Score:
0
Max. score:
0
Irritation parameter:
iris score
Basis:
animal #2
Time point:
other: overall at 24, 48 and 72 h
Score:
0
Max. score:
0
Irritation parameter:
iris score
Basis:
animal #3
Time point:
other: overall at 24, 48 and 72 h
Score:
0
Max. score:
0
Irritant / corrosive response data:
Reversibility of any observed irritating effect: Changes fully reversible within 7 days.
There was no evidence of ocular corrosion.
Other effects:
Blue discolouration of iris, eyelids (treated eye) and fur.
No toxic symptoms were observed i n the animals during the test period and no mortality occurred.

Applicant's summary and conclusion

Interpretation of results:
not irritating
Remarks:
Migrated information mildly irritating (M2) Criteria used for interpretation of results: EU
Conclusions:
The test substance should be considered mildly irritating (M2) to the rabbit eye. According to the EEC criteria for classification and labelling requirements for dangerous substances (EEC Directive 83/467/EEC), the substance needs not be labelled as an eye irritant. The same conclusion applies to the new CLP regulation EC 1272/2008.