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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Biodegradation in water

On the basis of the experimental studies of the structurally and functionally similar read across chemical and applying the weight of evidence approach, the percentage degradation of the test chemical Benzenesulfonamide, 4-methyl-, reaction products with formaldehyde and melamine can be expected to be ranges from 65.24 to 100%, respectively in 28 days. Thus, based on this, test chemical Benzenesulfonamide, 4-methyl-, reaction products with formaldehyde and melamine is considered to be readily biodegradable in nature.

Additional information

Biodegradation in water

Data available for the structurally and functionally similar read across chemicals has been reviewed to determine the biodegradability of the test chemical Benzenesulfonamide, 4-methyl-, reaction products with formaldehyde and melamine. The studies are as mentioned below:

28-days Closed Bottle test following the OECD guideline 301 D to determine the ready biodegradability of the test item. The test system included control, test item and reference item. The concentration of test and reference item (Sodium Benzoate) chosen for both the study was 4 mg/L, while that of inoculum was 32 ml/l. ThOD (Theoretical oxygen demand) of test and reference item was determined by calculation. % degradation was calculated using the values of BOD and ThOD for test item and reference item. The BOD28 value of test chemical was observed to be 1.07 mgO2/mg. ThOD was calculated as 1.64 mgO2/mg. Accordingly, the % degradation of the test item after 28 days of incubation at 20 ± 1°C according to Closed Bottle test was determined to be 65.24%. Based on the results, the test item, under the test conditions, was readily biodegradable in nature.

Another biodegradation study was conducted for 21 days for evaluating the percentage biodegradability of test substance. Activated sludge was used as a test inoculums for the study. Concentration of inoculum i.e, sludge used was 30 mg/l and initial test substance conc. used in the study was 100 mg/l, respectively. The percentage degradation of test substance was determined to be 93, 95.3 and 100% degradation by BOD, TOC removal and UV-Vis parameter in 21 days. Thus, based on percentage degradation,test chemicalis considered to be readily biodegradable in nature.

On the basis of the experimental studies of the structurally and functionally similar read across chemical and applying the weight of evidence approach, the percentage degradation of the test chemical Benzenesulfonamide, 4-methyl-, reaction products with formaldehyde and melamine can be expected to be ranges from 65.24 to 100%, respectively in 28 days. Thus, based on this, test chemical Benzenesulfonamide, 4-methyl-, reaction products with formaldehyde and melamine is considered to be readily biodegradable in nature.