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REACH

Pyrithione zinc

EC number: 236-671-3 | CAS number: 13463-41-7

Life Cycle description
Uses advised against

Ecotoxicological information

Toxicity to microorganisms

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Administrative data

Link to relevant study record(s)

Description of key information

Key value for chemical safety assessment

EC50 for microorganisms:: 2.4 mg/L
EC10 or NOEC for microorganisms:: 0.1 mg/L

Additional information

The information contained within this robust summary document comes from studies which are in the ownership of Arch Chemicals Inc. and which are protected in several regions globally. This information may not be used for any purpose other than in support of the Chemical safety Report submitted by Arch Chemicals Inc. under RegulationEC 1907/2006.

The toxicity of ZPT on microorganisms is summarized in the below table

Table51:Inhibition of microbial activity (aquatic) by ZPT

Guideline / Test method	Species / Inoculum	End-point / Type of test	Exposure		Results [mg/L]			Remarks	Reference
Guideline / Test method	Species / Inoculum	End-point / Type of test	design	duration	EC₁₀	EC₅₀	NOEC	Remarks	Reference
OECD 209	Activated sludge	Respiration inhibition	-	30 min 3 hours	-	5.8 2.4	0.10 (3 hours)	Key study	Mead C (2001) Unpublished study
OECD 209; 87/302/EEC, method C.11.	Synthetic sewage	Respiration inhibition.	-	3 hours	0.44 (EC₂₀)	1.84	Not reported	-	Weniger P (2002). Unpublished study
ISO 10712	Pseudomonasputida	Growth inhibition	-	16 hours	0.082	0.22	0.0625	-	Mead C (2001) Unpublished study

Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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