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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Toxicological information

Acute Toxicity: dermal

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Administrative data

Endpoint:
acute toxicity: dermal
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1997

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
EPA OPP 81-2 (Acute Dermal Toxicity)
GLP compliance:
yes
Test type:
standard acute method

Test material

Constituent 1
Chemical structure
Reference substance name:
Pyrithione zinc
EC Number:
236-671-3
EC Name:
Pyrithione zinc
Cas Number:
13463-41-7
Molecular formula:
C10H8N2O2S2Zn
IUPAC Name:
Bis [1-hydroxy-2(1H)-pyridinethionato-O,S](T-4)-zinc
Details on test material:
Batch number: TOX1000
Description: off white powder

Test animals

Species:
rat
Strain:
Sprague-Dawley
Sex:
male/female
Details on test animals or test system and environmental conditions:
Source: Charles River UK
Age at study initation: 8-12 weeks
Weigth at study initiation: Male - 244-261g Female - 200-210g

Administration / exposure

Type of coverage:
semiocclusive
Vehicle:
water
Details on dermal exposure:
Area covered: 10% body surface
Duration of exposure:
Exposure: 24 hours
Post exposure period: 14 days
Doses:
2000 mg/kg
No. of animals per sex per dose:
5
Control animals:
no

Results and discussion

Effect levels
Sex:
male/female
Dose descriptor:
LD50
Effect level:
> 2 000 mg/kg bw
Clinical signs:
other: Systemic: no toxic effects Local: no irritations

Applicant's summary and conclusion

Conclusions:
LD50 = >2000 mg/kg bw. This information may not be used for any purpose other than in support of the Chemical safety Report submitted by Arch Chemicals Inc. under Regulation EC 1907/2006.