Fatty acids, tall-oil, C12-15-alkyl esters, sulfated, sodium salts

Ecotoxicological Summary

Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:

PNEC aqua (freshwater)

PNEC value:

0.032 mg/L

Assessment factor:

1 000

Extrapolation method:

assessment factor

PNEC freshwater (intermittent releases):

0.32

Marine water

Hazard assessment conclusion:

PNEC aqua (marine water)

PNEC value:

0.003 mg/L

Assessment factor:

10 000

Extrapolation method:

assessment factor

STP

Hazard assessment conclusion:

PNEC STP

PNEC value:

490 mg/L

Assessment factor:

10

Extrapolation method:

assessment factor

Sediment (freshwater)

Hazard assessment conclusion:

PNEC sediment (freshwater)

PNEC value:

3 050 mg/kg sediment dw

Extrapolation method:

equilibrium partitioning method

Sediment (marine water)

Hazard assessment conclusion:

PNEC sediment (marine water)

PNEC value:

305 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:

3 652 mg/kg soil dw

Extrapolation method:

equilibrium partitioning method

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:

PNEC oral

PNEC value:

33.3 mg/kg food

Assessment factor:

300

Additional information

PNEC sediment using Equilibrium Partitioning Method:

The following formula is applied:

PNEC_sed= K_susp-water/RHO_susp*PNEC_water*1000

Where:

PNECwater	Predicted No Effect Concentration in water	[mg.l-1]	0.032
RHOsusp	bulk density of wet suspended matter	[kg.m-3]	1150
Ksusp water	partition coefficient suspended matter water	[m3.m-3]	109000
PNECsed	Predicted No Effect Concentration in sediment	[mg.kg-1of wet sediment]

 

 

K_{susp water}= Fwater_susp+ Fsolid_susp*Kp_susp/1000*RHO_solid

Fwatercomp	fraction water in compartmentcomp	[m3.m-3]	0,9
Fsolidcomp	fraction solids in compartmentcomp	[m3.m-3]	0,1
RHOsolid	density of the solid phase	[kg.m-3]	2500
Kpcomp	solids-water part. coeff. in compartmentcomp	[l.kg-1]	437500

 

Kp_susp= Foc_susp*Koc

Koc	partition coefficient organic carbon-water		[l.kg-1]	4375000 calculated with EPIWIN 4.00
Foccomp	weight fraction of organic carbon in compartmentcomp		[kg.kg-1]	0,1
Kpsusp	partition coefficient solid-water in suspended matter	[l.kg-1]

 

Therefore PNEC sediments = 109000*0,032*1000/1150 = 3050 mg/L

PNEC marine sediment using Equilibrium Partitioning Method:

Being marine PNEC usually derived by freshwater PNEC with an adding assessment factor of 10, consequently the marine sediment PNEC can be directly derived from PNEC sediment with an assessment factor of 10.

Therefore PNEC marine sediments = 3050*0.1 = 305 mg/L

 

PNEC soil using Equilibrium Partitioning Method:

 

The following formula is applied:

PNEC_soil= K_soil-water/RHO_soil*PNEC_water*1000

Where:

PNECwater	Predicted No Effect Concentration in water	[mg.l-1]	0.032
RHOsoil	bulk density of wet suspended matter	[kg.m-3]	1150
Ksoil water	partition coefficient soil water	[m3.m-3]	131250
PNECsoil	Predicted No Effect Concentration in soil	[mg.kg-1]

 

 

K_{soil water}= Fair_soil*K_air-waterl+Fwater_soil+ Fsolid_soil*Kp_soil/1000*RHO_solid

Fwatersoil	fraction water in compartmentsoil	[m3.m-3]	0.2
Fsolidsoil	fraction solids in compartmentsoil	[m3.m-3]	0.6
Fairsoil	fraction air in compartment comp (only relevant for soil)	[m3.m-3]	0.2
RHOsolid	density of the solid phase	[kg.m-3]	2,500
Kpsoil	solids-water part. coeff. in compartmentsoil	[l.kg-1]	87500
Kair-water	air-water partitioning coefficient	[-]	0.00000151

 

Kp_soil= Foc_soil*Koc

Koc	partition coefficient organic carbon-water		[l.kg-1]	4375000 calculated with EPIWIN 4.00
Focsoil	weight fraction of organic carbon in compartmentsoil		[kg.kg-1]	0,02
Kpsoil	partition coefficient solid-water	[l.kg-1]		0.038

 

K_air-water= 0.007477 (Henry constant at environmental temperature)/285(T°K)/8.314(R, gas constant) =1.51E-6

Therefore PNEC soil = 131250/1150*0,032= 3652

Conclusion on classification

Classification for Acute (short-term) aquatic hazard is required if

96 hr LC50 (for fish)≤ 1 mg/l and/or

48 hr EC50 (for crustacea)≤ 1 mg/l and/or

72 or 96 hr ErC50 (for algae or other aquaticplants)≤ 1 mg/l.

and the lowest EC50 measured is 32 mg/l for daphnia and

Classification for Chronic toxicity is required if:

Chronic NOEC or ECx (for fish) > 0,1 to ≤ 1 mg/l and/or

Chronic NOEC or ECx (for crustacea) > 0,1 to ≤ 1 mg/l and/or

Chronic NOEC or ECx (for algae or otheraquatic plants) > 0,1 to ≤ 1 mg/l

and NOAEC for algare is > 10 mg/l

as a consequence no classification for the environement is warranted under EC 1272/2008 and 286/2011