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ISO 9841-2013 pdf free download

ISO 9841-2013 pdf free download.Essential oil of hyssop (Hyssopus officinalis L. ssp. officinalis)
Huile essentielle d’hysope (Nyssopus officinalis L. ssp. offlcinalis).
This ISO 9841 specifies certain characteristics of essential oil of hyssop (Hyssopus ojjicinalis L. ssp officinalis), with a view to facilitating the assessment of its quality.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO/TR 210, Essential oils — General rules for packaging, conditioning and storage
ISO/TR 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 1242, Essential oils — Determination of acid value
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
essential oil of hyssop
essential oil obtained by steam distillation of the leaves of Hyssopus officinalis L. ssp officinalis of the Lamiaceae family
Note Ito entry: For information on CAS number, see ISO/TR 21092.121
4 Requirements
4.1 Appearance
Clear, mobile liquid.
4.2 Colour
Pale yellow to brown yellow.
4.3 Odour
4.4 Relative density at 20 °C, d0
Minimum: 0,920.
Maximum: 0,950.
4.5 Refractive index at 20 °C
Minimum: 1,475 0.
Maximum: 14860.
4.6 Optical rotation at 20 °C Between —25° and -10°.
4.7 Acid value
Less than or equal to 2.0.
4.8 Typical chromatogram
Carry out the analysis of the essential oil by gas chromatography. Identify in the chromatogram obtained the representative and characteristic components shown in Table 1. The proportions ofthese components, indicated by the integrator, shall be as shown in Table 1. This constitutes the chromatographic profile of the essential oil.
5 Sampling
Sampling shall be performed in accordance with ISO 212.
Minimum volume of test sample: 50 ml.
NOTE This volume is sufficient to carry out all the tests specified in this International Standard at least once.
6 Test methods
6.1 Relative density at 20 °C, dg
Determine the relative density in accordance with ISO 279.
6.2 Refractive index at 20 °C
Determine the refractive index in accordance with ISO 280.
6.3 Optical rotation at 20 °C
Determine the optical rotation in accordance with ISO 592.
6.4 Acid value
Determine the acid value in accordance with ISO 1242.
6.5 Chromatographic profile
Determine the chromatographic profile in accordance with ISO 11024.
7 Packaging, labelling, and marking
These items shall be In accordance with ISO/TR 210 and ISO/TR 211.ISO 9841-2013 pdf free download.

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