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Environmental fate & pathways

Biodegradation in water: screening tests

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Link to relevant study record(s)

Description of key information

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

Key value for chemical safety assessment

Biodegradation in water:
readily biodegradable

Additional information

Considered constituents of Camphor white oil are mainly considered readily biodegradable (see table below).

Constituents

typical concentration in the mixture

Biodegradation results

Reference in IUCLID 5

1,8-cineol

37.28

Readily biodegradable

1,8-cineol, 470-82-6, Biodegradation in water: screening tests, Rudio, 1997, RS, W

(d,l)-limonene

17.24

Readily biodegradable

(d,l)-limonene, 138-86-3, Biodegradation in water: screening tests, MITI, 1980, RS, W

Alpha-pinene

9.55

Readily biodegradable

alpha-pinene, 80-56-8, Biodegradation in water: screening tests, MITI, 2007, RS, W

Beta-pinene

3.47

Readily biodegradable

beta-pinene, 127-91-3, Biodegradation in water: screening tests, van Ginkel, 2010, RS, W

Camphene

2.06

Not readily biodegradable

camphene, 79-92-5, Biodegradation in water: screening tests, MITI, 1988, RS, W

Sabinene

5.86

Readily biodegradable

sabinene, 3387-41-5, Biodegradation in water: screening tests, Kreutzer, 2010, RS, w

Beta-myrcene

1.5

Readily biodegradable

beta-myrcene, 123-35-3, Biodegradation in water: screening tests, MITI, 1987, RS, W

Gamma-terpinene

1.4

Readily biodegradable

gamma-terpinene, 99-85-4, Biodegradation in water: screening tests, MITI, 1988, RS, W

It can be observed that only Camphene (2.06% w/w in Camphor white 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 Camphor white oil is readily biodegradable.