Registration Dossier

Administrative data

Hazard for aquatic organisms

Freshwater

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

Marine water

Hazard assessment conclusion:
PNEC aqua (marine water)
PNEC value:
0.009 mg/L
Assessment factor:
100
Extrapolation method:
assessment factor

STP

Hazard assessment conclusion:
PNEC STP
PNEC value:
30 mg/L
Assessment factor:
1
Extrapolation method:
assessment factor

Sediment (freshwater)

Hazard assessment conclusion:
PNEC sediment (freshwater)
PNEC value:
0.543 mg/kg sediment dw
Extrapolation method:
equilibrium partitioning method

Sediment (marine water)

Hazard assessment conclusion:
PNEC sediment (marine water)
PNEC value:
0.054 mg/kg sediment dw
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:
6.336 mg/kg soil dw
Assessment factor:
1 000
Extrapolation method:
equilibrium partitioning method

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
PNEC oral
PNEC value:
1.667 mg/kg food
Assessment factor:
3 000

Additional information

The PNEC values have been presented in SCN- equivalents.

Conclusion on classification

The following information is used for classification purposes. Values in bold indicate the substance that was tested. The non bold values were read across using molecular weight adjustments.

endpoint

 

SCN-

NH4SCN

KSCN

NaSCN

 

Organism

mg/L

mg/L

mg/L

mg/L

 Acute data

 

 

 

 

 

Short term toxicity to fish (96 h LC50)

O. mykiss

49,60

65,00

82,98

69,23

Short term toxicity to aquatic invertebrates (48 h EC50)

D. magna

2,72

3,56

4,54

3,79

Toxicity to aquatic algae and cyanobacteria (72 hErC50)

P. subcapitata

81,26

>234.3

>310.61

>116.27

Chronic data

Long term toxicity to fish (124 d NOEC

P. promelas

1,10

1,31

1,84

1,53

Long term toxicity to aquatic invertebrates (21 d NOEC)

D. magna

0,95

1,25

1,60

1,33

Toxicity to aquatic algae and cyanobacteria (72 h NOEC)

P. subcapitata

81,26

106,50

135,97

113,43

Harmonized classification:

Annex VI tables 3.1 and 3.2 (ATP 2 to CLP 286/2011 of 10 March 2011)

Aquatic Chronic 3

H412: Harmful to aquatic life with long lasting effects.

R52/53 Harmful to aquatic organisms may cause long-term adverse effects in the aquatic environment.

 

Classification based on the available data:

1. According to Commission Regulation (EU) No 286/2011 of 10 March 2011 amending, for the purposes of its adaptation to technical and scientific progress, Regulation (EC) No 1272/2008

 

Acute classification

The existing acute data for fish, algae and Daphnia are shown in the table above 

As all effect values are > 1 mg/L,there is no acute classification for sodium thiocyanate, ammonium thiocyanate and potassium thiocyanate

 

Chronic classification

All three substances arereadily biodegradable, and the estimated worst case log Kow is 0.58. Chronic data are available for all three trophic levels as shown in the table above

According to Table 4.1.0, b(ii)sodium thiocyanate, ammonium thiocyanate and potassium thiocyanatehave no chronic classification as the lowest EC value is > 1 mg/L

Overall classification for all three substances: None

 

 

2. According to Directive 67/548/EEC

No classification