Decan-1-ol, ethoxylated

Toxicity to terrestrial plants

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

toxicity to terrestrial plants: short-term (with study design considered suitable for long-term assessment)

Type of information:

read-across from supporting substance (structural analogue or surrogate)

Adequacy of study:

key study

Justification for type of information:

Please refer to the category approach justification provided in section 13.

Reason / purpose for cross-reference:

read-across source

Key result

Species:

Triticum aestivum

Duration:

19 d

Dose descriptor:

NOEC

Effect conc.:

>= 100 mg/kg soil dw

Nominal / measured:

nominal

Conc. based on:

test mat.

Basis for effect:

seedling emergence

Remarks:

and growth

Remarks on result:

other: Source, key, 68439-50-9, Sasol, 1994

Key result

Species:

Brassica alba

Duration:

19 d

Dose descriptor:

NOEC

Effect conc.:

>= 100 mg/kg soil dw

Nominal / measured:

nominal

Conc. based on:

test mat.

Basis for effect:

seedling emergence

Remarks:

and growth

Remarks on result:

other: Source, key, 68439-50-9, Sasol, 1994

Key result

Species:

Lepidum sativum

Duration:

19 d

Dose descriptor:

NOEC

Effect conc.:

>= 100 mg/kg soil dw

Nominal / measured:

nominal

Conc. based on:

test mat.

Basis for effect:

seedling emergence

Remarks:

and growth

Remarks on result:

other: Source, key, 68439-50-9, Sasol, 1994

Validity criteria fulfilled:

yes

Conclusions:

No effects were observed for seedling emergence and growth of the three test species at the test item concentration of 100 mg/kg soil dw.

Executive summary:

The toxicity of Alcohols C12-14, ethoxylated (2 EO) towards terrestrial plants was assessed in the underlying GLP-OECD 208 study (Scholz, 1994).in the following plant species: B.alba, L. sativum, and T. aestivum. The plants were exposed to the limit test concentration of 100 mg/kg test substance for 19 days.

No toxicity and no effects on growth were observed in the terrestrial plant limit test in B.alba, L. sativum, and T. aestivum following exposure to Alcohols C12-14, ethoxylated (2 EO), resulting in a NOEC ≥ 100 mg/kg. Based on the structural similarity no effects on terrestrial plants are expected for the substance decan-1 -ol, ethoxylated (1-2.5 moles EO).

Reference 2

Endpoint:

toxicity to terrestrial plants: short-term (with study design considered suitable for long-term assessment)

Type of information:

experimental study

Adequacy of study:

key study

Study period:

05 - 24 JAN 1994

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

guideline study with acceptable restrictions

Qualifier:

according to guideline

Guideline:

OECD Guideline 208 (Terrestrial Plants Test: Seedling Emergence and Seedling Growth Test)

GLP compliance:

yes

Specific details on test material used for the study:

Trade name: Marlipal 24/20

Analytical monitoring:

no

Vehicle:

no

Details on preparation and application of test substrate:

- Method of mixing into soil (if used): Stock solution (0.23 g substance in 20 g quarz sand) was mixed with 1680 g steril substrate to a concentration of 100 mg/kg dry substrate.

Species:

Triticum aestivum

Plant group:

Monocotyledonae (monocots)

Details on test organisms:

- Common name: wheat
- Plant family: Poacea

Species:

Brassica alba

Plant group:

Dicotyledonae (dicots)

Details on test organisms:

- Common name: White mustard
- Plant family: Brassicaceae

Species:

Lepidum sativum

Plant group:

Dicotyledonae (dicots)

Details on test organisms:

- Common name: Garden cress
- Plant family: Brassicaceae

Test type:

seedling emergence toxicity test

Study type:

laboratory study

Substrate type:

natural soil

Limit test:

yes

Total exposure duration:

19 d

Test temperature:

20 - 24 °C

pH:

5.0 - 7.5

Moisture:

approximately 60%

Details on test conditions:

TEST SYSTEM
- Test container (type, material, size): plastic pots, diameter 6 cm (bottom) and 8 cm (top), 6 cm (height)
- Amount of soil: approximately 100 g substrate
- No. of seeds per container: 5
- No. of replicates per treatment group: 4
- No. of replicates per control: 4



SOURCE AND PROPERTIES OF SUBSTRATE (if soil)
- Geographic location: LUFA soil Speyer (Sp. 2.3)
- Soil texture (if natural soil): particle < 20 µm: 10 - 20%
- Organic carbon (%): < 1.5%



GROWTH CONDITIONS
- Photoperiod: 16 h day / 8 h night
- Light intensity and quality: day: 1500 - 2000 lux, night: approximately 50 lux
- Day/night temperatures: 20 - 24 °C
- Relative humidity (%): 90% - 100%
- Interval of applications: 1 - 2 times per week

Nominal and measured concentrations:

100 mg/kg soil

Reference substance (positive control):

no

Key result

Species:

Triticum aestivum

Duration:

19 d

Dose descriptor:

NOEC

Effect conc.:

>= 100 mg/kg soil dw

Nominal / measured:

nominal

Conc. based on:

test mat.

Basis for effect:

seedling emergence

Remarks:

and growth

Key result

Species:

Brassica alba

Duration:

19 d

Dose descriptor:

NOEC

Effect conc.:

>= 100 mg/kg soil dw

Nominal / measured:

nominal

Conc. based on:

test mat.

Basis for effect:

seedling emergence

Remarks:

and growth

Key result

Species:

Lepidum sativum

Duration:

19 d

Dose descriptor:

NOEC

Effect conc.:

>= 100 mg/kg soil dw

Nominal / measured:

nominal

Conc. based on:

test mat.

Basis for effect:

seedling emergence

Remarks:

and growth

Details on results:

SEEDLING EMERGENCE
- Percent seedling emergence: Triticum aestivum: 100 mg/kg: 90% (85% control), Brassica alba: 100 mg/kg: 80% (80% control), Lepidum sativum: 100 mg/kg: 95% (control: 95%)
- Fresh weight: Triticum aestivum: 100 mg/kg: 357 mg (389 mg control), Brassica alba: 100 mg/kg: 248 mg (228 mg control), Lepidum sativum: 100 mg/kg: 71 mg (control: 61 mg)

Validity criteria fulfilled:

yes

Conclusions:

No effects were observed for seedling emergence and growth of the three test species at the test item concentration of 100 mg/kg soil dw.

Executive summary:

The toxicity of Alcohols C12-14, ethoxylated towards terrestrial plants was assessed in the underlying GLP-OECD 208 study (Scholz, 1994).in the following plant species: B.alba, L. sativum, and T. aestivum. The plants were exposed to the limit test concentration of 100 mg/kg test substance for 19 days.

No toxicity and no effects on growth were observed in the terrestrial plant limit test in B.alba, L. sativum, and T. aestivum following exposure to Alcohols C12-14, ethoxylated., resulting in a NOEC ≥ 100 mg/kg.

Description of key information

NOEC (19d) ≥ 100 mg/kg soil dw. for seedling emergence and growth of Lepidum sativum, Brassica alba and Triticum aestivum

Key value for chemical safety assessment

Long-term EC10, LC10 or NOEC for terrestrial plants:

100 mg/kg soil dw

Additional information

As no study on the toxicity to terrestrial plant is available for decan-1 -ol, ethoxylated, 1-2.5EO (CAS 26183-52 -8), a category read-across is prepared to an analog alcohol ethoxylate (alcohols, C12-14, 2EO, CAS 68439-50-9). The study was carried out as limit test in accordance to OECD guideline 208 and GLP (Sasol, 1994). No effects were observed for seedling emergence and growth of the three test species at the test item concentration of 100 mg/kg soil dw. This data were used for PNEC derivation.