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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Ecotoxicological information

Sediment toxicity

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Administrative data

Link to relevant study record(s)

Description of key information

Key value for chemical safety assessment

EC50 or LC50 for freshwater sediment:
2.1 mg/kg sediment dw
EC10, LC10 or NOEC for freshwater sediment:
0.95 mg/kg sediment dw

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.

Testing has been carried out with both freshwater and marine sediment dwelling organisms (LeptocheirusandHyallela AztecaseeTable50below).

Table50:Toxicity of ZPT to sediment dwelling organisms

Guideline /
Test method

Species

Endpoint /
Type of test

Exposure

Results

[mg/kg]

Remarks

Reference

design

duration

NOEC

LC50/EC50

No standard guideline

Amphipod

 

Corophium volutator, Pallas

Mortality

Spiked salt water sediment

10 days

-

4.4 mg/Kg dry sediment

 

-

Hushagen (1998)

Unpublished study

OPPTS 850.1735

Hyallela azteca

Survival, growth

Spiked fresh water sediment

10 days

0.95 mg/Kg (zinc pyrithione)

10 mg/Kg (zinc pyrithione equivalents)

2.1 mg/Kg (zinc pyrithione)

18 mg/Kg (zinc pyrithione equivalents)

Key study

Ward TJ, Boeri RL (2004)

Unpublished study

OPPTS 850.1740

Leptocheirus plumulosus

Survival, growth

Spiked salt water sediment

10 days

<1.08 mg/Kg (zinc pyrithione)

12 mg/Kg (zinc pyrithione equivalents)

<1.08 mg/Kg (zinc pyrithione)

26 mg/Kg (zinc pyrithione equivalents)

-

Ward TJ, Boeri RL (2004)

Unpublished study