Registration Dossier
Registration Dossier
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EC number: 290-058-5 | CAS number: 90063-97-1 Extractives and their physically modified derivatives such as tinctures, concretes, absolutes, essential oils, oleoresins, terpenes, terpene-free fractions, distillates, residues, etc., obtained from Mentha arvensis, Labiatae.
Endpoint summary
Administrative data
Description of key information
Substance characterisation
The test substance Cornmint oil is a Natural Complex Substance (NCS) for which > 90% of the constituents is identified. The main constituents are predominantly cyclic monoterpene alcohols (like menthol) and ketones (like menthone) comprising more then 85% of the composition.
This composition represents a relatively homogenous type of NCS. For the environmental riskassessment the properties of the major representatives of this group (Menthol and Menthone) may be considered. However, according to the DPD+ method, the lead substance for therisk assessmentis Limonene. The constituents all have different properties for water solubility, volatility, adsorption and lipophility that determine their environmental behaviour. Due to these differences the assessment of the environmentalpropertiesof Cornmint Oil is preferably based on data for the individual constituents.
Based on the constituent approach as described in the industry protocol for the REACH registration of NCSs of botanical origin used as fragrance ingredients (see footnote 1), the water solubility ranges from 0.5 to 3500 mg/l for the constituents. The menthol/menthone fraction is highly soluble (ca. 900 mg/l).
The estimated vapour pressure of Cornmint Oil was 50.8 Pa, ranging from 0.7 to 981 Pa for the constituents. For the major constituents (typically 85% of the composition) the vapour pressure is below 50 Pa and 10 % of the constituents composition has a higher vapour pressure. This indicates that partitioning by volatilisation may play a role.
The Log Kow of the constituents ranges from 2.73 to 6.99. Log Kow is below 3 for 34.2% and below 4.5 for 97.2 % of the typical constituent composition. Thus the major part of the constituents have a low to moderate capacity to sorb to organic matter.
The BCF of the constituents in Cornmint oil was calculated to be in the range of 30 – 19,000. For the major constituents, typically 85% of the NCS, the estimated BCF is 59.1. As the constituents are readily biodegradable, it is likely that they will also be biotransformed in higher organisms so a high bioaccumulation factor is actually not expected.
Cornmint Oil is to be considered as a readily biodegradable substance.
(1) A statement on the use of the protocol for Registration of Natural Complex Substance (NCS) under REACH as well as the protocol itself have been attached to the dossier.
Additional information
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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