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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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


An OECD 111 - Hydrolysis - study has been conducted on Nectaryl.

Nectaryl undergoes negligible hydrolysis at pH7 and pH9 (T1/2 > 1 year at 25 °C), whereas a normal pseudo-1st order hydrolysis reaction occurs at pH4 with a derived half-life time of 210 days at 25 °C.


The fate of Nectaryl in the atmospheric compartment has been modelled using the AopWin (v1.92) module of EPISuite (v4.11).  The model predicts rapid atmospheric degradation with an atmospheric half-life of 1.171 hours based on reactions with hydroxyl radicals (12-hours of daylight per day), and, 0.64 hours half-life based on interactions with ozone (24-hour day).  In addition, AopWin (v1.92) suggests that interactions with Nitrate radicals may well be important as a transformation mechanism.  

The AEROWIN model (see EPISuite output attachment predicts a low level of adsorption of the gaseous-phase Nectaryl to aerosol particulates (1.2 to 2.5 % depending on the model), and, thus suggests that the major portion of the airborne Nectaryl will be freely available to undergo gaseous-phase reactions with hydroxyl and ozone radicals.

Long-range atmospheric transport, and subsequent re-deposition, is, therefore, highly unlikely to be of any concern for Nectaryl.


Nectaryl has been determined to be READILY Biodegradable in an OECD 301F biodegradation screening study and, as such, higher-tier environmental fate and metabolism studies are not required. Additionally, the UV-VIS spectrum of Nectaryl demonstrates a relatively strong absorbing chromophore at 284 nm, which may well promote both direct- and indirect-photolytic degradation.

Additional information