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REACH

Laurus nobilis, ext.

EC number: 283-272-5 | CAS number: 84603-73-6 Extractives and their physically modified derivatives such as tinctures, concretes, absolutes, essential oils, oleoresins, terpenes, terpene-free fractions, distillates, residues, etc., obtained from Laurus nobilis, Lauraceae.

Life Cycle description
Uses advised against

Environmental fate & pathways

Biodegradation in water: screening tests

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Administrative data

Link to relevant study record(s)

Description of key information

Based on a Weight of Evidence approach, it can be possible to consider that Laurel leaf oil is readily biodegradable.

Key value for chemical safety assessment

Biodegradation in water:: readily biodegradable

Additional information

Considered constituents of Laurel leaf oil are mainly considered readily biodegradable (see table below).

Constituents	typical concentration in the mixture	Biodegradation results	Reference in IUCLID 5
1,8-cineol	42.2	Readily biodegradable	1,8-cineol, 470-82-6, Biodegradation in water: screening tests, Rudio, 1997, RS, W
(d,l)-limonene	3.4	Readily biodegradable	(d,l)-limonene, 138-86-3, Biodegradation in water: screening tests, MITI, 1980, RS, W
Alpha-pinene	5.6	Readily biodegradable	alpha-pinene, 80-56-8, Biodegradation in water: screening tests, MITI, 2007, RS, W
Terpinyl acetate	10	Readily biodegradable	terpinyl acetate, 80-26-2, Biodegradation in water: screening tests, Birch, 1994, RS, w
Terpineol	2	Readily biodegradable	terpineol, 8000-41-7, Biodegradation in water: screening tests, Rudio, 1997, RS, W
Beta-pinene	4.4	Readily biodegradable	beta-pinene, 127-91-3, Biodegradation in water: screening tests, van Ginkel, 2010, RS, W
Para-cymene	1.1	Readily biodegradable	para-cymene, 99-87-6, Biodegradation in water: screening tests, MITI, 1987, RS, W
Camphene	0.5	Not readily biodegradable	camphene, 79-92-5, Biodegradation in water: screening tests, MITI, 1988, RS, W
Linalol	8.8	Readily biodegradable	Linalol, 78 -70 -6, Biodegradation in water: screening tests, MITI, 1996, RS, W
Sabinene	8.8	Readily biodegradable	sabinene, 3387-41-5, Biodegradation in water: screening tests, Kreutzer, 2010, RS, w

It can be observed that only Camphene (0.5% w/w in Laurel leaf oil composition) is considered as not ready biodegradable.

To justify that even if camphene is considered as not ready biodegradable, once in mixture (rosemary oil, which is a comparable NCS which contains ca. 10% of camphene – study in Weigh of Evidence) the mixture underwent ready biodegradation. Therefore, and based on that weight of evidence, it can considered that Laurel leaf oil is readily biodegradable.

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