Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Hydrolysis:

Based on existing data the substance is conisdered to be stable in water, a relevant hydrlosis was not observed.

Biodegradation in water: A relevant biodegradation was measured (32 % after 28 d), the substance is classified as "inherently biodegradable".
According to ECHA documentGuidance on information requirements and chemical safety assessment

, chapter R.16, a half-life of 150 d in surface water and of 150 d in marine water ist stated as default value.

Biodegradation in soil: The degradation of N-[(3(5)-Methyl-1H-pyrazol-1-yl)methyl]acetamide (P 70/05) was investigated under aerobic conditions at 20 °C. Three German soils of different characteristics were used for the experiment (LUFA 2.1 - silty sand/sand, LUFA 2.2 - loamy sand and LUFA 2.3 - silty sand/sandy loam). The formation of 3-Methylpyrazole, a possible degradate of P 70/05, was monitored.

N-[(3(5)-Methyl-1H-pyrazol-1-yl)methyl]acetamide (P 70/05) degraded fastly in the soil test systems.

The DT-50 values of P 70/05 in the soils LUFA 2.1, LUFA 2.2 and LUFA 2.3 soil were 2.31, 0.70 and 1.05 days.

The DT-90 values of P 70/05 in the soils LUFA 2.1, LUFA 2.2 and LUFA 2.3 soil were 7.68, 2.32 and 3.31 days.

Within the course of the P 70/05 degradation, the original isomers ratio of P 70/05 changed.

The formation of 3-Methylpyrazole reached a maximum of 0.1331 mg/kg on day-3 in soil LUFA 2.3. On day-29 the analysed value for 3-Methylparazole accounted for 0.0158 and 0.0193 mg/kg in soil LUFA 2.3.

Additional information

Based on existing data the substance is conisdered to be stable in water, a relevant hydrlosis was not observed. A relevant biodegradation was measured (32 % after 28 d), the substance is classified as "inherently biodegradable".
According to ECHA document Guidance on information requirements and chemical safety assessment

, chapter R.16, a half-life of 150 d in surface water and of 150 d in marine water ist stated as default value.