Registration Dossier

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Administrative data

Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:
PNEC aqua (freshwater)
PNEC value:
0.032 mg/L
Assessment factor:
10
Extrapolation method:
assessment factor
PNEC freshwater (intermittent releases):
0.182 mg/L

Marine water

Hazard assessment conclusion:
PNEC aqua (marine water)
PNEC value:
3.2 µg/L
Assessment factor:
100
Extrapolation method:
assessment factor
PNEC marine water (intermittent releases):
0.102 mg/L

STP

Hazard assessment conclusion:
PNEC STP
PNEC value:
83.4 mg/L
Assessment factor:
10
Extrapolation method:
assessment factor

Sediment (freshwater)

Hazard assessment conclusion:
PNEC sediment (freshwater)
PNEC value:
11 889 mg/kg sediment dw
Assessment factor:
1
Extrapolation method:
equilibrium partitioning method

Sediment (marine water)

Hazard assessment conclusion:
PNEC sediment (marine water)
PNEC value:
1 188.9 mg/kg sediment dw
Assessment factor:
1
Extrapolation method:
equilibrium partitioning method

Hazard for air

Air

Hazard assessment conclusion:
no hazard identified

Hazard for terrestrial organisms

Soil

Hazard assessment conclusion:
PNEC soil
PNEC value:
0.136 mg/kg soil dw
Assessment factor:
50
Extrapolation method:
assessment factor

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
no potential for bioaccumulation

Additional information

 Derivation of PNECs 

 

 The PNECs for the different compartments are calculated either by application an assessment factor (PNEC freshwater, PNEC marine water, PNEC intermittent release and PNEC stp) or using the equilibrium assumption method (PNEC sediment-freshwater, PNEC sediment-marine-water and PNEC soil). The PNEC air is not considered as relevant based on the chemical structure and intrinsic properties of the registered substance. Secondary exposure of mammals and birds is not expected, and since no adequate bird or mammalian data are available, the PNECsecondary poisoning is omitted. The utilized procedures are described in detail in the ECHA REACH Guidance of May 2008, Chapter R.10 (”Characterisation of dose [concentration]-response for environment”). 

Summary Ecotoxicological key vlaues for environmental assessment

Species

Long-term

Short-term

Comments

Fish

NOEC 5.37 mg/L

LD50(96h) 10.19 mg/L marine water

 

Daphnia

NOEC 0.32 mg/L freshwater (D. magna)

LD50 (48h) 95 mg/L marine water (Idotea balthica basteri)

EC50 (48h) 22 mg/L fresh water (D. magna)

 

Algae

NOEC (96h) 9.1 mg/L (Synechocystis aquatilis)

EC50 (96h) 18.2 mg/L

freshwater

Microorganisms

EC10 834 mg/L

EC50 1194 mg/L

 

Conclusion on classification

The base set for acute toxicity is complete and chronic toxicity data are available for three trophic levels for tin compounds (e.g. SnCl2).

Applying the criteria for classification of soluble metal compounds specified in the ‘Guidance on the Application of the CLP Criteria’ (version 5.0 – July 2017), Annex IV, classification for acute environmental toxicity is not needed if the ERV > 1 mg/L. The lowest chronic value was obtained in freshwater study with Daphnia magna with SnCl2 of 0.32 mg/L, already corrected to the chronic ERV. In cases where both the acute and chronic ERV are greater than 1 mg/L there is no need to classify for either acute or chronic effects according to Regulation (EC) No 1272/2008. For the tin compound the chronic ERVcompound is > 0.1 mg/L and ≤ 1 mg/L and there is evidence of rapid environmental transformation (Disscussion see in endpoint summary Environmental fate and pathways). Therefore the test item meets the criteria for classification as Aquatic Chronic 3 (H412) according to Regulation (EC) No 1272/2008.

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