Registration Dossier

Diss Factsheets

Administrative data

Endpoint:
boiling point
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2007
Report date:
2007

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to guideline
Guideline:
EU Method A.2 (Boiling Temperature)
Deviations:
no
Qualifier:
according to guideline
Guideline:
OECD Guideline 103 (Boiling point/boiling range)
Deviations:
no
Qualifier:
according to guideline
Guideline:
EPA OPPTS 830.7220 (Boiling Point / Boiling Range)
Deviations:
no
GLP compliance:
yes
Type of method:
distillation method

Test material

Constituent 1
Reference substance name:
Melaleuca alternifolia, ext.
EC Number:
285-377-1
EC Name:
Melaleuca alternifolia, ext.
Cas Number:
85085-48-9
Molecular formula:
Not applicable (a generic molecular formula cannot be provided for this specific UVCB substance).
IUPAC Name:
Essential oil of melaleuca alternifolia
Test material form:
liquid
Specific details on test material used for the study:
- Purity: 100%
- Lot (batch) No.: 1215
- Expiration date of the lot: 30 March 2009
- Storage condition of test material: Room temperature, protected from light.

Results and discussion

Boiling point
Boiling pt.:
>= 97 - <= 220 °C
Atm. press.:
>= 1 004 - <= 1 007 mBar
Remarks on result:
other: The atmospheric pressure readings for the duplicate determinations were 1004 and 1007 mbar respectively. Consequently no pressure correction was required to the determined temperature values.

Any other information on results incl. tables

The boiling temperatures (temperature corrected for the thermometer and to Standard Pressure, recorded at 10 ml intervals) are shown in Table 1 below:

Table 1. Boiling temperatures.

Volume distilled

(ml)

Distillation temperature (°C)

Run 1

Run 2

Mean

Initial distillation

96

97

97

5

175

179

177

10

187

188

188

20

190

191

191

30

191

191

191

40

191

191

191

50

194

192

193

60

196

197

197

70

200

200

200

80

208

206

207

90

214

214

214

95

219

221

220

Dry point

219

219

219

A dark yellow solid remained at the end of each test.

Applicant's summary and conclusion

Conclusions:
The boiling range of Tea Tree Oil was found to be 97 to 220°C.
Executive summary:

A GLP-compliant study was carried out to determine the boiling temperature of Tea Tree Oil. The study followed the requirements of EEC method A2, OECD method 103 and OPPTS method 830.7220 without significant deviation. The boiling range of Tea Tree Oil was found to be 97 to 220°C.