Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Administrative data

Endpoint:
eye irritation: in vitro / ex vivo
Type of information:
experimental study
Adequacy of study:
key study
Study period:
May 2016
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2016
Report date:
2017

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 492 (Reconstructed Human Cornea-like Epithelium (RhCE) Test Method for Identifying Chemicals Not Requiring Classification and Labelling for Eye Irritation or Serious Eye Damage)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Remarks:
October 2015

Test material

Constituent 1
Chemical structure
Reference substance name:
(+)-pin-2(3)-ene
EC Number:
232-087-8
EC Name:
(+)-pin-2(3)-ene
Cas Number:
7785-70-8
Molecular formula:
C10H16
IUPAC Name:
(1R,5R)-2,6,6-trimethylbicyclo[3.1.1]hept-2-ene
Constituent 2
Chemical structure
Reference substance name:
(-)-pin-2(3)-ene
EC Number:
232-077-3
EC Name:
(-)-pin-2(3)-ene
Cas Number:
7785-26-4
Molecular formula:
C10H16
IUPAC Name:
(1S,5S)-2,6,6-trimethylbicyclo[3.1.1]hept-2-ene
impurity 1
Chemical structure
Reference substance name:
(-)-pin-2(10)-ene
EC Number:
242-060-2
EC Name:
(-)-pin-2(10)-ene
Cas Number:
18172-67-3
Molecular formula:
C10H16
IUPAC Name:
(1S,5S)-6,6-dimethyl-2-methylenebicyclo[3.1.1]heptane
impurity 2
Chemical structure
Reference substance name:
(1S)-2,2-dimethyl-3-methylenebicyclo[2.2.1]heptane
EC Number:
227-337-8
EC Name:
(1S)-2,2-dimethyl-3-methylenebicyclo[2.2.1]heptane
Cas Number:
5794-04-7
Molecular formula:
C10H16
IUPAC Name:
(1S,4R)-2,2-dimethyl-3-methylenebicyclo[2.2.1]heptane
impurity 3
Chemical structure
Reference substance name:
(1R)-2,2-dimethyl-3-methylenebicyclo[2.2.1]heptane
EC Number:
227-336-2
EC Name:
(1R)-2,2-dimethyl-3-methylenebicyclo[2.2.1]heptane
Cas Number:
5794-03-6
Molecular formula:
C10H16
IUPAC Name:
(1R,4S)-2,2-dimethyl-3-methylenebicyclo[2.2.1]heptane
impurity 4
Chemical structure
Reference substance name:
1,7,7-trimethyltricyclo[2.2.1.02,6]heptane
EC Number:
208-083-7
EC Name:
1,7,7-trimethyltricyclo[2.2.1.02,6]heptane
Cas Number:
508-32-7
Molecular formula:
C10H16
IUPAC Name:
1,7,7-trimethyltricyclo[2.2.1.0~2,6~]heptane
impurity 5
Chemical structure
Reference substance name:
(1R,5R)-6,6-dimethyl-2-methylenebicyclo[3.1.1]heptane
Cas Number:
19902-08-0
Molecular formula:
C10H16
IUPAC Name:
(1R,5R)-6,6-dimethyl-2-methylenebicyclo[3.1.1]heptane
impurity 6
Chemical structure
Reference substance name:
7,7-dimethyl-2-methylene-, (1S,4R)-bicyclo[2.2.1]heptane
Cas Number:
7378-37-2
Molecular formula:
C10H16
IUPAC Name:
7,7-dimethyl-2-methylene-, (1S,4R)-bicyclo[2.2.1]heptane
impurity 7
Chemical structure
Reference substance name:
7,7-dimethyl-2-methylene-(1R,4S)-bicyclo[2.2.1]heptane
Cas Number:
116724-26-6
Molecular formula:
C10H16
IUPAC Name:
7,7-dimethyl-2-methylene-(1R,4S)-bicyclo[2.2.1]heptane
Test material form:
liquid
Details on test material:
Batch No. : FAB-01072015
Purity : 96.1% (sum of the two main constituents)
Name of test material (as cited in study report): alpha-pinene multiconstituent
Physical state: colourless liquid
Storage Conditions: +2°C to +8°C, under nitrogen and protected from light
Expiry Date: 30 June 2016

Test animals / tissue source

Species:
human
Strain:
other: reconstructed human Cornea-like Epithelium
Details on test animals or tissues and environmental conditions:
EpiOcular TM tissue Model OCL-212-ver2.0 supplied by MatTek

Test system

Vehicle:
unchanged (no vehicle)
Controls:
yes, concurrent positive control
yes, concurrent negative control
Amount / concentration applied:
Test item alpha-pinene multiconstituent was applied as supplied at the dose of 50 µL.
Duration of treatment / exposure:
30 minutes
Duration of post- treatment incubation (in vitro):
A 12-minute post exposure immersion period at room temperature and a 1-hour and 58-minute post exposure incubation at standard culture conditions.
Number of animals or in vitro replicates:
2 replicates

Results and discussion

In vitro

Results
Irritation parameter:
other: percent tissue viability
Value:
80.39
Negative controls validity:
valid
Positive controls validity:
valid
Remarks:
percent tissue viability = 31.99%

Any other information on results incl. tables

Table 1:

INDIVIDUAL AND AVERAGE VALUES OF OD AFTER 30 MINUTES EXPOSURE

 

Tissue

OD

Mean OD/disc

Mean OD/ product

Viability %

Mean viability %

Difference of viability %

Negative control

1

1.035

1.023

0.961

1.006

1.079

93.28

100.00

13.44

2

1.158

1.128

1.167

1.151

106.72

Positive control

3

0.367

0.351

0.357

0.358

0.345

31.19

31.99

2.41

4

0.335

0.333

0.328

0.332

30.78

Test item

7

0.896

0.879

0.862

0.879

0.867

81.50

80.39

2.33

8

0.873

0.853

0.841

0.855

79.28

OD: optical density

 

Applicant's summary and conclusion

Interpretation of results:
GHS criteria not met
Conclusions:
alpha-Pinene multiconstituent does not need classification as eye irritant or serious eye damage according to Regulation (EC) n° 1272/2008 and UN GHS.
Executive summary:

In a GLP study conducted according to the OECD 492 guideline the irritant potential of alpha-pinene multiconstituent was evaluated. The method is based on viability of Reconstructed Human Cornea-like Epithelium (RhCE) when exposed to the test substance. The mean percent tissue viability of the RhCE replicates treated with test item alpha-pinene multiconstituent was 80.39% versus 31.99% in the positive control (Methyl acetate). In conclusion, in accordance with Regulation (EC) n° 1272/2008 and UN GHS, the test item does not require classification as eye irritant or serious eye damage. No hazard statement or signal word is required.