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Environmental fate & pathways

Biodegradation in water: screening tests

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Description of key information

Biodegradation in water of methyl 5-nitrohydrogen.isophthalate: 50% degradation in 15 days

Key value for chemical safety assessment

Biodegradation in water:
readily biodegradable

Additional information

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TYPE | NUM | Biowin1 FRAGMENT DESCRIPTION | COEFF | VALUE

------+-----+--------------------------------------------+---------+---------

Frag | 1 | Aromatic acid [-C(=O)-OH] | 0.1769 | 0.1769

Frag | 1 | Ester [-C(=O)-O-C] | 0.1742 | 0.1742

Frag | 1 | Aromatic nitro [-NO2] | -0.3050 | -0.3050

MolWt| * | Molecular Weight Parameter | | -0.1072

Const| * | Equation Constant | | 0.7475

============+============================================+=========+=========

RESULT | Biowin1 (Linear Biodeg Probability) | | 0.6864

============+============================================+=========+=========

 

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TYPE | NUM | Biowin2 FRAGMENT DESCRIPTION | COEFF | VALUE

------+-----+--------------------------------------------+---------+---------

Frag | 1 | Aromatic acid [-C(=O)-OH] | 2.4224 | 2.4224

Frag | 1 | Ester [-C(=O)-O-C] | 4.0795 | 4.0795

Frag | 1 | Aromatic nitro [-NO2] | -2.5086 | -2.5086

MolWt| * | Molecular Weight Parameter | | -3.1973

============+============================================+=========+=========

RESULT | Biowin2 (Non-Linear Biodeg Probability) | | 0.9782

============+============================================+=========+=========

A Probability Greater Than or Equal to 0.5 indicates --> Biodegrades Fast

A Probability Less Than 0.5 indicates --> Does NOT Biodegrade Fast

 

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TYPE | NUM | Biowin3 FRAGMENT DESCRIPTION | COEFF | VALUE

------+-----+--------------------------------------------+---------+---------

Frag | 1 | Aromatic acid [-C(=O)-OH] | 0.0879 | 0.0879

Frag | 1 | Ester [-C(=O)-O-C] | 0.1402 | 0.1402

Frag | 1 | Aromatic nitro [-NO2] | -0.1696 | -0.1696

MolWt| * | Molecular Weight Parameter | | -0.4976

Const| * | Equation Constant | | 3.1992

============+============================================+=========+=========

RESULT | Biowin3 (Survey Model - Ultimate Biodeg) | | 2.7601

============+============================================+=========+=========

 

------+-----+--------------------------------------------+---------+---------

TYPE | NUM | Biowin4 FRAGMENT DESCRIPTION | COEFF | VALUE

------+-----+--------------------------------------------+---------+---------

Frag | 1 | Aromatic acid [-C(=O)-OH] | 0.0077 | 0.0077

Frag | 1 | Ester [-C(=O)-O-C] | 0.2290 | 0.2290

Frag | 1 | Aromatic nitro [-NO2] | -0.1084 | -0.1084

MolWt| * | Molecular Weight Parameter | | -0.3248

Const| * | Equation Constant | | 3.8477

============+============================================+=========+=========

RESULT | Biowin4 (Survey Model - Primary Biodeg) | | 3.6512

============+============================================+=========+=========

Result Classification: 5.00 -> hours 4.00 -> days 3.00 -> weeks

 (Primary & Ultimate) 2.00 -> months 1.00 -> longer

 

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TYPE | NUM | Biowin5 FRAGMENT DESCRIPTION | COEFF | VALUE

------+-----+--------------------------------------------+---------+---------

Frag | 1 | Aromatic acid [-C(=O)-OH] | 0.3770 | 0.3770

Frag | 1 | Ester [-C(=O)-O-C] | 0.3437 | 0.3437

Frag | 1 | Aromatic nitro [-NO2] | -0.1876 | -0.1876

Frag | 3 | Aromatic-H | 0.0082 | 0.0247

Frag | 1 | Methyl [-CH3] | 0.0004 | 0.0004

MolWt| * | Molecular Weight Parameter | | -0.6698

Const| * | Equation Constant | | 0.7121

============+============================================+=========+=========

RESULT | Biowin5 (MITI Linear Biodeg Probability) | | 0.6005

============+============================================+=========+=========

 

------+-----+--------------------------------------------+---------+---------

TYPE | NUM | Biowin6 FRAGMENT DESCRIPTION | COEFF | VALUE

------+-----+--------------------------------------------+---------+---------

Frag | 1 | Aromatic acid [-C(=O)-OH] | 2.4449 | 2.4449

Frag | 1 | Ester [-C(=O)-O-C] | 2.4462 | 2.4462

Frag | 1 | Aromatic nitro [-NO2] | -2.4035 | -2.4035

Frag | 3 | Aromatic-H | 0.1201 | 0.3604

Frag | 1 | Methyl [-CH3] | 0.0194 | 0.0194

MolWt| * | Molecular Weight Parameter | | -6.5001

============+============================================+=========+=========

RESULT |Biowin6 (MITI Non-Linear Biodeg Probability)| | 0.2484

============+============================================+=========+=========

A Probability Greater Than or Equal to 0.5 indicates --> Readily Degradable

A Probability Less Than 0.5 indicates --> NOT Readily Degradable

 

------+-----+--------------------------------------------+---------+---------

TYPE | NUM | Biowin7 FRAGMENT DESCRIPTION | COEFF | VALUE

------+-----+--------------------------------------------+---------+---------

Frag | 1 | Aromatic acid [-C(=O)-OH] | 0.2656 | 0.2656

Frag | 1 | Ester [-C(=O)-O-C] | 0.1719 | 0.1719

Frag | 1 | Aromatic nitro [-NO2] | -0.2141 | -0.2141

Frag | 3 | Aromatic-H | -0.0954 | -0.2863

Frag | 1 | Methyl [-CH3] | -0.0796 | -0.0796

Const| * | Equation Constant | | 0.8361

============+============================================+=========+=========

RESULT | Biowin7 (Anaerobic Linear Biodeg Prob) | | 0.6936

============+============================================+=========+=========

A Probability Greater Than or Equal to 0.5 indicates --> Biodegrades Fast

A Probability Less Than 0.5 indicates --> Does NOT Biodegrade Fast