2-chloro-p-phenylenediamine

Biodegradation in soil

Link to relevant study record(s)

Reference

Endpoint:

biodegradation in soil

Type of information:

calculation (if not (Q)SAR)

Adequacy of study:

key study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

accepted calculation method

Justification for type of information:

Data is from predictive model developed by US EPA.

Qualifier:

no guideline available

Principles of method if other than guideline:

Fugacity Model by EPI Suite estimation database

GLP compliance:

not specified

Test type:

other: Estimation

Radiolabelling:

not specified

Oxygen conditions:

other: estimation

Soil classification:

not specified

Parameter followed for biodegradation estimation:

other: Calculated data

Soil No.:

#1

% Recovery:

78.7

Remarks on result:

other: Other details not known

Key result

Soil No.:

#1

% Degr.:

50

Parameter:

other: Half life

Sampling time:

75 d

Remarks on result:

other: 75 days = 1800 hrs.

Key result

Soil No.:

#1

DT50:

75 d

Type:

other: estimated data

Temp.:

25 °C

Remarks on result:

other: 75 days = 1800 hrs.

Transformation products:

not specified

Evaporation of parent compound:

not specified

Volatile metabolites:

not specified

Residues:

not specified

 

	Mass Amount (percent)	Half-Life (hr)	Emissions (kg/hr)
Soil	78.7	1.8e+003	1000

 

	Fugacity (atm)	Reaction (kg/hr)	Advection (kg/hr)	Reaction (percent)	Advection (percent)
Soil	6.09e-013	1.3e+003	0	43.2	0

Conclusions:

Based on the Estimation Programs Interface Suite (EPI Suite, 2017) prediction model, the half-life period in soil for the test substance 2-chloro-p- phenylenediamine (CAS No.615-66-7) is estimated. The half-life period of 2-chloro-p-phenylenediamine in soil is calculated as 75 days (1800 hours).

Executive summary:

Based on the Estimation Programs Interface Suite (EPI Suite, 2017) prediction model, the half-life period in soil for the test substance 2-chloro-p-phenylene diamine (CAS No.615-66-7) is estimated. If released into the environment,78.7% of the chemical will be partitioning into the soil according to the Mackay Level III Fugacity Model having an estimated half-life period of 75 days (1800 hrs.). Based on this half-life it is considered that the substance will qualify as not persistent as the half-life does not exceed the threshold of 120 days (to qualify the chemical as persistent in soil medium) as per Annex XIII of Reach regulation and also it is considered that the exposure risk to soil dwelling animals is moderate to low.

Description of key information

Based on the Estimation Programs Interface Suite (EPI Suite, 2017) prediction model, the half-life period in soil for the test substance 2-chloro-p-phenylene diamine (CAS No.615-66-7) is estimated. The half-life period of 2-chloro-p-phenylenediamine in soil is calculated as 75 days (1800 hours). Based on this half-life it is considered that the substance will qualify as not persistent as the half-life does not exceed the threshold of 120 days (to qualify the chemical as persistent in soil medium) as per Annex XIII of Reach regulation.

Key value for chemical safety assessment

Half-life in soil:

75 d

at the temperature of:

25 °C

Additional information

Based on the Estimation Programs Interface Suite (EPI Suite, 2017) prediction model, the half-life period in soil for the test substance 2-chloro-p-phenylenedi amine (CAS No.615-66-7) is estimated. If released into the environment,78.7% of the chemical will be partitioning into the soil according to the Mackay Level III Fugacity Model having an estimated half-life period of 75 days (1800 hrs.). Based on this half-life it is considered that the substance will qualify as not persistent as the half-life does not exceed the threshold of 120 days (to qualify the chemical as persistent in soil medium) as per Annex XIII of Reach regulation and also it is considered that the exposure risk to soil dwelling animals is moderate to low.