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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

The adsorption potentialof Dihydromyrcenyl acetate is 2468 L/kg based on read-across from Dihydromyrcenol (CAS# 18479 -58 -8). For Dihydromyrcenol, data is available from a HPLC screening study according to OECD TG 121 and in compliance with GLP criteria. From this study a log Koc of 2.25 was determined. The respective Koc value is ca. 178 L/kg. The log Koc is corrected: log Koc Dihydromyrcenyl acetate = log Koc Dihydromyrcenol * (log Kow Dihydromyrcenyl acetate/log Kow Dihydromyrcenol) = 2.25 * (4.9/3.25) = 3.39. The respective Koc value for Dihydromyrcenyl acetate is 2468 L/kg.

The Henry's law constantis calculated using the equation from EUSES. Using a molecular weight of 198.3 g/mol, and the experimentally determined vapour pressure of 14.4 Pa (at 24 °C) and water solubility of 6.1 mg/L (at 24 °C) the Henry's Law constant at environmental temperature (12 °C) is calculated to be 236 Pa·m³/mol.

Based on Level III environmental distribution modellingusing EPISUITE (assuming equal and continuous releases to air, water and soil) using the CAS number 53767 -93 -4 and the measured physico-chemical parameters (water solubility = 6.1 mg/L, vapour pressure = 0.108 mm Hg and log Kow = 4.9) as input, it is estimated that the majority of the substance released to the environment will partition mainly into soil (62.2%) and water (33.7%) with minor amounts to air (3.29%) and sediment (0.785%).

The SimpleTreat model, which is incorporated in EUSES, simulates the distribution of the substance in a Sewage Treatment Plant (STP). Model calculations show that 49.6% of the substance will be degraded and that 26.9%, 17.1% and 6.39% will partition to air, sewage sludge and water, respectively.

Additional information