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Hydrolysis

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Reference
Endpoint:
hydrolysis
Type of information:
read-across from supporting substance (structural analogue or surrogate)
Adequacy of study:
weight of evidence
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
data from handbook or collection of data
Remarks:
experimental data of read across substances
Justification for type of information:
Data for the target chemical is summarized based on the structurally similar read across chemicals
Reason / purpose:
read-across source
Reason / purpose:
read-across source
Reason / purpose:
read-across source
Qualifier:
according to
Guideline:
other: as mentioned below
Principles of method if other than guideline:
WoE report is based on two hydrolysis studies as-
1., 2. and 3.
GLP compliance:
not specified
Specific details on test material used for the study:
- Name of test material (IUPAC name): Tributylmethylammonium chloride
- Common name: Methy tributyl ammonium chloride (MTBAC)
- Molecular formula: C13H30ClN
- Molecular weight: 235.84 g/mol
- Smiles : [N+](CCCC)(CCCC)(CCCC)C.[ClH-]
- InChI : 1S/C13H30N.ClH/c1-5-8-11-14(4,12-9-6-2)13-10-7-3;/h5-13H2,1-4H3;1H/q+1;/p-1
- Substance Type: Organic
- Physical State: Liquid
Radiolabelling:
not specified
Analytical monitoring:
not specified
Temp.:
20 °C
Remarks:
1. The study was performed at pH 4, 7 and 9, respectively.
Remarks:
2. No data available
Remarks:
3. No data available
Positive controls:
not specified
Negative controls:
not specified
Transformation products:
not specified
Temp.:
20 °C
DT50:
> 1 yr
Remarks on result:
other: 1. The study was performed at pH 4, 7 and 9, respectively.
DT50:
> 5 - < 63 d
Remarks on result:
other: 2. Other details not known
DT50:
> 1 yr
Remarks on result:
other: 3. Other details not known
Details on results:
1. The half-life period of test chemical was determined to be ≥ 1 yr at pH 4, 7 and 9, respectively and at a temperature of 20°C. Thus, test chemical was reported to be hydrolytically stable.
2. Test chemical was reported to undergoe slow to negligible hydrolysis in water with a half-life value ranging from 5 to 63 days, respectively.
3. The half-life period of test chemical was determined to be > 1 yr. Thus, test chemical was reported to be hydrolytically stable.
Validity criteria fulfilled:
not specified
Conclusions:
On the basis of the experimental studies of the structurally and functionally similar read across chemical and applying the weight of evidence approach, the hydrolysis half-life value of the test chemical Tributylmethylammonium chloride can be expected to be ≥ 1 yr at pH 4, 7 and 9 & at a temperature of 20°C or 5 to 63 days, respectively. Thus, based on this half-life value, it can be concluded that the test chemical Tributylmethylammonium chloride undergoes slow to negligible hydrolysis in water.
Executive summary:

Data available for the structurally and functionally similar read across chemicals has been reviewed to determine the half-life of the test chemical Tributylmethylammonium chloride (CAS no. 56375 -79 -2). The studies are as mentioned below:

The half-life of the test chemical was determined at different pH range. The study was performed at pH of 4, 7 and 9, & at a temperature of 20°C, respectively. The half-life period of test chemical was determined to be ≥ 1 yr at pH 4, 7 and 9, respectively & at a temperature of 20°C and thus test chemical was reported to be hydrolytically stable. On the basis of this, test chemical is considered to be not hydrolysable.

In an another study, the half-life of the test chemical was determined.The half-life value of test chemical was determined to be ranges from 5 to 63 days, respectively. Thus, based on the value, test chemical is considered to undergoe slow to negligible hydrolysis in water.

For the test chemical, the hydrolysis half-life value was determined.The hydrolysis of the quaternary nitrogen to a tertiary amine and an alcohol is thermodynamically very unfavorable with a delta G estimated from the delta H of reaction greater than +400 kJ mole. This is predicted to be a very endothermic reaction and should occur only under conditions of very high temperature.Thus, it can be concluded that the test chemical is stable in water and has a hydrolysis half-life of > 1 yr. On the basis of this, test chemical is considered to be not hydrolysable.

On the basis of the experimental studies of the structurally and functionally similar read across chemical and applying the weight of evidence approach, the hydrolysis half-life value of the test chemical Tributylmethylammonium chloride can be expected to be ≥ 1 yr at pH 4, 7 and 9 & at a temperature of 20°C or 5 to 63 days, respectively. Thus, based on this half-life value, it can be concluded that the test chemical Tributylmethylammonium chloride undergoes slow to negligible hydrolysis in water.

Description of key information

On the basis of the experimental studies of the structurally and functionally similar read across chemical and applying the weight of evidence approach, the hydrolysis half-life value of the test chemical Tributylmethylammonium chloride can be expected to be ≥ 1 yr at pH 4, 7 and 9 & at a temperature of 20°C or 5 to 63 days, respectively. Thus, based on this half-life value, it can be concluded that the test chemical Tributylmethylammonium chloride undergoes slow to negligible hydrolysis in water.

Key value for chemical safety assessment

Additional information

Data available for the structurally and functionally similar read across chemicals has been reviewed to determine the half-life of the test chemical Tributylmethylammonium chloride (CAS no. 56375 -79 -2). The studies are as mentioned below:

 

The half-life of the test chemical was determined at different pH range. The study was performed at pH of 4, 7 and 9, & at a temperature of 20°C, respectively. The half-life period of test chemical was determined to be ≥ 1 yr at pH 4, 7 and 9, respectively & at a temperature of 20°C and thus test chemical was reported to be hydrolytically stable. On the basis of this, test chemical is considered to be not hydrolysable.

 

In an another study, the half-life of the test chemical was determined.The half-life value of test chemical was determined to be ranges from 5 to 63 days, respectively. Thus, based on the value, test chemical is considered to undergoe slow to negligible hydrolysis in water.

 

For the test chemical, the hydrolysis half-life value was determined.The hydrolysis of the quaternary nitrogen to a tertiary amine and an alcohol is thermodynamically very unfavorable with a delta G estimated from the delta H of reaction greater than +400 kJ mole. This is predicted to be a very endothermic reaction and should occur only under conditions of very high temperature.Thus, it can be concluded that the test chemical is stable in water and has a hydrolysis half-life of > 1 yr. On the basis of this, test chemical is considered to be not hydrolysable.

 

On the basis of the experimental studies of the structurally and functionally similar read across chemical and applying the weight of evidence approach, the hydrolysis half-life value of the test chemical Tributylmethylammonium chloride can be expected to be ≥ 1 yr at pH 4, 7 and 9 & at a temperature of 20°C or 5 to 63 days, respectively. Thus, based on this half-life value, it can be concluded that the test chemical Tributylmethylammonium chloride undergoes slow to negligible hydrolysis in water.