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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Ecotoxicological information

Ecotoxicological Summary

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Administrative data

Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:
no data available: testing technically not feasible

Marine water

Hazard assessment conclusion:
no data available: testing technically not feasible

STP

Hazard assessment conclusion:
no data available: testing technically not feasible

Sediment (freshwater)

Hazard assessment conclusion:
no data available: testing technically not feasible

Sediment (marine water)

Hazard assessment conclusion:
no data available: testing technically not feasible

Hazard for air

Air

Hazard assessment conclusion:
no hazard identified

Hazard for terrestrial organisms

Soil

Hazard assessment conclusion:
no data available: testing technically not feasible

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
no potential to cause toxic effects if accumulated (in higher organisms) via the food chain

Additional information

Cornmint oil is a Natural Complex Substance, a mixture consisting of slightly soluble to soluble constituents. The toxicity of the NCS on algae, Daphnia and fish was not experimentally established. For these endpoints the toxicity was estimated by QSARs in Episuite EcoWin v1.00, in accordance with Appendix 7 of the EFEO NCS protocol. A statement on the NCS Protocol has been attached.

The 96h-LC50 of Cornmint oil towards fish was calculated to be 3.01 mg/l. The 48h-EC50 towards Daphnia magna was estimated at 2.43 mg/l. The estimated 96h-EC50 of Cornmint oil towards algae is 2.63 mg/l.

All constituents have the same working mechanisms (Narcosis and Polar narcosis) and there are no minor constituents that are toxic to the environment. A DPD+ analysis identified the following constituents to represent the dominant risks to the environment (see table). The ratio calculated from the constituent concentration and concentration limit is called Lead Substance Indicator (LSI).

 

 

 

Aquatic

CAS

Substance

Conc. in corn mint (%)

R-phrase(s)

Conc. limit

LSI

5989 -54 -8

L-Limonene

5.0

R50/53

0.25

20

89-48-5

Menthyl Acetate

3.5

R51/53

2.5

1.4

Since the LSI of Menthyl acetate is less than 10 times compared to the LSI of L-Limonene, L-Limonene is considered as the lead constituent representative for the other constituents. Therefore, the exposure assessment is carried out using L-limonene and the PNECs for L-limonene are used for the risk assessment for the environment. These PNEC values were obtained from the disseminated REACH registration dossier for this substance (CAS number 5989 -54 -8) available on the ECHA website.

(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.

Conclusion on classification

Classification

As is mentioned in the substance chapter 1.2, Cornmint oil dementholized is the typical quality in the dossier for Cornmint oil. This is the quality on which the calculation for the data requirements on toxicity towards Daphnia, algae and fish (EC50/LC50 values calculated from EPIWIN data on the constituents) is based. Based on the calculated EC50/LC50 values between 1 and 10 mg/L and the observed log Kow values of the constituents, Cornmint oil dementholized would need to be classified with Aquatic Chronic 2. Also for the other two qualities, Cornmint oil crude and Cornmint oil dementholized, low terpenes content, the environmental classification would be Aquatic Chronic 2 (details not provided in the dossier).

However, the classification for the environment is not based on the calculated EC50/LC50 values, but on the classifications of the constituents, which is in line with the CLP guidance. In order to determine the classification, the NCS is treated as a mixture. In the CLP guidance (2013) it is mentioned that classification is to be based on 1) available test data on the substance/mixture as a whole, and, if not available 2) test data available on similar mixtures and individual hazardous ingredients (so-called bridging) and, if not available 3) the classifications of the individual ingredients/constituents, combined with their concentrations in the mixture. For Cornmint oil, no test data is available for the substance as a whole and a similar substance/mixture for which test data is available is also not known. Therefore, the classification for the environment of all qualities of Cornmint oil is based on the classifications of the constituents together with their typical percentages in the UVCB substance.

 

The classifications for the constituents of the three qualities of Cornmint oil are provided in the below table. The information available in the IFRA/ IOFI labelling manual (IFRA/IOFI GHS working group 2013) was used as a basis. For constituents for which a disseminated REACH registration was already available, the IFRA information was checked and adjusted where necessary.

 

Constituent

CAS number

Cornmint oil dementholized

% (typical)

Cornmint oil dementholized, low terpenes content

% (typical)

Cornmint oil crude

% (typical)

Environmental classification (DSD)

Environmental classification (CLP)

L-Menthol

2216-51-5

38.0

46.0

71.0

Not classified for environment (also in disseminated registration dossier)

Not classified for environment (aquatic acute 3 acc to GHS) (also in disseminated registration dossier)

Menthone

89-80-5

24.0

21.5

8.5

R52/53

Aquatic chronic 3

Iso-Menthone

491-07-6

9.0

9.0

3.8

R52/53

Aquatic chronic 3

L-Limonene

5989 -54 -8

 

(limonene

138-86-3)

5

0.5

3.4

R50/53 (also in disseminated registration dossier)

Aquatic acute 1, chronic 1, with M-factor of 1 (also in disseminated registration dossier)

Neo-Menthol

2216-52-6

5.5

5.5

1.9

Analogue to Menthol: not classified for the environment

Not classified for environment (aquatic acute 3 acc to GHS)

Menthyl Acetate

89-48-5

2623-23-6

3.5

4.0

2.5

R51/53

(also in dessiminated registration dossier)

Aquatic chronic 2 

(also in dessiminated registration dossier)

Pulegone

89-82-7

2.0

2.5

1.4

Not classified for environment

Not classified for environment

Iso-pulegol

89-79-2

2.0

1.8

0.9

Not classified for environment 

(also in dessiminated registration dossier)

Not classified for environment 

(also in dessiminated registration dossier)

alpha-Pinene

80-56-8

2

0.5

1

Not classified for environment 

(also in dessiminated registration dossier)

Not classified for environment 

(also in dessiminated registration dossier)

beta-pinene

127-91-3

1.5

0.5

1

Not classified for environment 

(also in dessiminated registration dossier)

Not classified for environment 

(also in dessiminated registration dossier)

Piperitone

89-81-6

1.0

1.5

0.2

Not classified for environment

Not classified for environment (aquatic acute 3 acc to GHS)

Octan-3-ol

589-98-0

1.2

0.2

0.3

No data for Octan-3-ol

For 1-octanol:

Not classified for environment (also in disseminated registration dossier)

No data for Octan-3-ol

For 1-octanol:

Not classified for environment (Aquatic acute 2 acc to GHS)

(also in disseminated registration dossier)

Neo-iso menthol

491-02-1

0.8

0.8

0.3

Analogue to Menthol: not classified for the environment (also in disseminated registration dossier)

Not classified for environment (aquatic acute 3 acc to GHS) (also in disseminated registration dossier)

Neo-iso pulegol

21290-09-5

29141-10-4

0.7

1.0

0.3

 Analogue to Iso-pulegol: not classified for the environment

 Analogue to Iso-pulegol: not classified for the environment

Germacrene D

37839-63-7

0.5

1.5

0.5

No data

 No data

1,8-cineole

470-82-6

0.5

0.1

0.2

Not classified for environment 

(also in dessiminated registration dossier)

 Not classified for environment 

(also in dessiminated registration dossier)

beta-Myrcene

123-35-3

0.6

 

0.7

Not classified for environment (according to disseminated registration. dossier)

Not classified for environment (according to disseminated registration dossier)

Sabinene

3387-41-5

0.4

 

0.3

No data

 No data

beta-caryophyllene

87-44-5

 

0.6

0.8

0.3

Not classified for environment

Not classified for environment

Unknown constituents

 

1.2

2.3

1.5

 

 

Total

 

100%

100%

100%

 

 

 

Based on the data in the table, the following calculations are made for the three qualities of cornmint oil (typical):

 

Cornmint oil dementholized:

DPD:

The hazard ratios for Cornmint oil dementholized (see DPD Annex III, part A) are as follows:

HRR50/53= 5 / 25 = 0.2 This is <1 therefore R50/53 not applicable

HRR51/53= 5 / 2.5 + 3.5 / 25 = 2.14 This is >1 therefore R51/53 is applicable

 

CLP:

Calculation for aquatic hazard categories (see CLP table 4.1.1 and 4.1.2):

Aquatic acute category 1: 5 % * 1 = 5 %. This is <25%, therefore Aquatic acute 1 not applicable

Aquatic chronic category 1: 5 % * 1 = 5 %. This is <25%, therefore Aquatic chronic 1 not applicable

Aquatic chronic category 2: 5 % * 1 * 10 + 3.5% * 1 = 53.5%. This is >25%, therefore Aquatic chronic 2 isapplicable

Cornmint oil dementholized is therefore classified with R51/53 according to DSD and DPD, and Aquatic chronic category 2 according to CLP.

 

Please note: Cornmint oil dementholized (typical) contains 1.2% of known and unknown components with unknown hazards to the aquatic environment.

 

Cornmint oil dementholized, low terpenes content

DPD:

The hazard ratios for Cornmint oil dementholized, low terpenes content (see DPD Annex III, part A) are as follows:

HRR50/53= 0.5 / 25 = 0.02 This is <1 therefore R50/53 not applicable

HRR51/53= 0.5 / 2.5 + 4.0 / 25 = 0.36 This is <1 therefore R51/53 not applicable

HRR52/53= 0.5 / 0.25 + 4.0 / 2.5 + (21.5 + 9) / 25 = 4.82 This is >1 therefore R52/53 is applicable

 

CLP:

Calculation for aquatic hazard categories (see CLP table 4.1.1 and 4.1.2):

Aquatic acute category 1: 0.5 % * 1 = 0.5 %. This is <25%, therefore Aquatic acute 1 not applicable

Aquatic chronic category 1: 0.5 % * 1 = 0.5 %. This is <25%, therefore Aquatic chronic 1 not applicable

Aquatic chronic category 2: 0.5 % * 1 * 10 + 4% * 1 = 9%. This is <25%, therefore Aquatic chronic 2 not applicable

Aquatic chronic category 3: 0.5 % * 1 * 10 * 10 + 4%* 1 * 10 + (21.5 + 9)% * 1 = 120.5%. This is >25%, therefore Aquatic chronic 3 is applicable

The quality Cornmint oil dementholized, low terpenes content is therefore classified with R52/53 according to DSD and DPD, and Aquatic chronic category 3 according to CLP.

 

Please note: Cornmint oil dementholized, low terpenes content (typical) contains 3.8% of known and unknown components with unknown hazards to the aquatic environment

 

Cornmint oil crude

DPD:

The hazard ratios for Cornmint oil crude (see DPD Annex III, part A) are as follows:

HRR50/53= 3.4 / 25 = 0.136 This is <1 therefore R50/53 not applicable

HRR51/53= 3.4 / 2.5 + 2.5 / 25 = 1.46 This is >1 therefore R51/53 is applicable

 

CLP:

Calculation for aquatic hazard categories (see CLP table 4.1.1 and 4.1.2):

Aquatic acute category 1: 3.4 % * 1 = 3.4 %. This is <25%, therefore Aquatic acute 1 not applicable

Aquatic chronic category 1: 3.4 % * 1 = 3.4 %. This is <25%, therefore Aquatic chronic 1 not applicable

Aquatic chronic category 2: 3.4 % * 1 * 10 + 2.5% * 1 = 36.5%. This is >25%, therefore Aquatic chronic 2 is applicable

 

Cornmint oil crude is therefore classified with R51/53 according to DSD and DPD, and Aquatic chronic category 2 according to CLP.

 

Please note: Cornmint oil crude (typical) contains 2.3% of known and unknown components with unknown hazards to the aquatic environment

 

As can be seen above, the environmental classification based on the calculation rules in CLP is Aquatic Chronic 2 for Cornmint oil dementholized and Cornmint oil crude. For these two oils, the environmental classification is therefore the same using both methods (calculated EC50/LC50 values and calculation rules in CLP combined with classifications of the constituents). For Cornmint oil dementholized, low terpenes content the classification based on CLP calculation rules is Aquatic Chronic 3. For this last substance, there is therefore a discrepancy between the environmental classification based on the calculated EC50/LC50 and the environmental classification based on the calculation rules in CLP and the classifications of the constituents. However, preference is given to the official method as described by the CLP guidance for mixtures.