BS ISO 4730-2017 pdf free download.Essential oil of Melaleuca, terpinen-4-ol type (Tea Tree oil)
This document specifies certain characteristics of the essential oil of Melaleuca, terpinen-4-ol type (Tea Tree oil), in order to facilitate assessment of its quality.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO/TS 210, Essential oils — General rules for packaging, conditioning and storage
ISO/TS 211, Essential oils — General rules for labelling and marking of containers
ISO 212, Essential oils — Sampling
ISO 279, Essential oils — Determination of relative density at 20 °C — Reference method
ISO 280, Essential oils — Determination of refractive index
ISO 592, Essential oils — Determination of optical rotation
ISO 875, Essential oils — Evaluation of miscibility in ethanol
ISO 11024 (all parts), Essential oils — General guidance on chromatographic profiles
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http:// www .electropedia. org/
— ISO Online browsing platform: available at http:// www. iso. org/ obp
3.1 essential oil of Melaleuca, terpinen-4-ol type
Tea Tree oil
essential oil obtained by steam distillation of the leaves and terminal branchlets of Melaleuca alternifolia (Maiden et Betche) Cheel or of M. linariifolia Sm.
Note 1 to entry: For information on the CAS number, see ISO/TR 21092.
4 Requirements
4.1 Essential oil of Melaleuca, terpinen-4-ol type (Tea Tree oil) shall meet the requirements as given in Table 1.
4.2 Chromatographic
profile Carry out the analysis of the essential oil by gas chromatography. Determine the chromatographic profile in accordance with the ISO 11024 series. Identify in the chromatogram obtained, the representative and characteristic components shown in Table 2. The proportions of these components, indicated by the integrator, shall be as shown in Table 2. This constitutes the chromatographic profile of the essential oil.
5 Additional information
5.1 Flashpoint
Information on the flashpoint is given in Annex B.
5.2 Enantiomeric distribution
Information concerning enantiomeric distribution is given in Annex C.
6 Sampling
Sampling shall be performed in accordance with ISO 212. Minimum volume of test sample is 50 ml.
NOTE This volume allows each of the tests specified in this document to be carried out at least once.
7 Packaging, labelling, marking and storage
These items shall be in accordance with ISO/TS 210 and ISO/TS 211.BS ISO 4730 pdf download.