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Hydrolysis

On the basis of the experimental studies of the test chemical and applying the weight of evidence approach, the hydrolysis half-life value of the test chemical can be expected to be ranges from 29 days to > 1 yr, at pH range 4-9 and at a temperature of 50-55°C or 1.1 days, respectively. Thus, based on this half-life value, it can be concluded that the test chemical undergoes slow to negligibe hydrolysis in water.

Additional information

Hydrolysis

Data available for the test chemical has been reviewed to determine the half-life of hydrolysis as a function of pH. The studies are as mentioned below:

The half-life value of test chemical was determined at a pH range 5-9 and at a temperature of 55°C, respectively. The estimated half-life value of test chemical was determined to be ranges from 29 to 146 days. Based on the half-life values, it is concluded that the test chemical is not hydrolysable.

In an another study, the half-life of the test chemical was determined.The study was performed according to OECD Guideline 111 (Hydrolysis as a Function of pH). Percentage degradation of test chemical was determined to be 3.91%, 1.085% and 4.78% at pH 4.0, 7.0 and 9.0 & at a temperature of 50°C, respectively and the half-life value of test chemical was determined to be > 1 yr. Since the chemical is not degradable less than 10 % in this test condition, it is presumably stable in water.Thus based on this, test chemical is considered to be not hydrolysable in water.

In next study the half-life value of test chemical was determined to be 1.1 days. Thus based on the value, test chemical is considered to undergo slow hydrolysis in water.

On the basis of the experimental studies of the test chemical and applying the weight of evidence approach, the hydrolysis half-life value of the test chemical can be expected to be ranges from 29 days to  > 1 yr, at pH range 4-9 and at a temperature of 50-55°C or 1.1 days, respectively. Thus, based on this half-life value, it can be concluded that the test chemical undergoes slow to negligibe hydrolysis in water.