BS ISO 8896:2016 pdf free download.Essential oil of caraway ( Carum carvi L .).
BS ISO 8896 specifies certain characteristics of the essential oil of caraway (Carum carvi I..). in order to facilitate assessment of its quality.
2 NormatIve references
The following documents. In who]e or in part. are normatively referenced In BS ISO 8896 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/TS 210. Essential oils — General rules fiw packaging, conditioning and storage
ISO/TS 211. EsserttIalols — General rules for labelling and marking of cornatners
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 S92. Essential oils — Determination of optical rotation
ISO 875, Essential oils — Evaluation of miscibility in ethanol
ISO 1242, Essential oils — Determination of acid value
ISO 11024 (all parts). Essential oils — General guidance on chromotographic profiles
3 Terms and definitions
For the purposes of BS ISO 8896, the following terms and definitions apply.
3.1
essential oil of Caraway
essential oil obtained by steam distillatIon from the dried, ripe fruit of caraway (Carum carvl L.) of the Apiaceae family
Note Ito entry: For tntocmatton on the CAS number, see ISO/TR 21092.
4 Requirements
4.1 Appearance Clear mobile liquid.
4.2 Colour Colourless to pale yellow.
4.3 Odour Fresh, herbaceous and spicy.
4.4 Relative density at 20 o(, c1
Minimum: 0.900
Maximum: 0,920
4.5 Refractive index at 20 °C
Minimum: 1.484
Maximum: 1,490
4.6 Optical rotation at 20°C Between .67° and +80°.
4.7 Acid value Maximum: 1,0
4.8 Miscibility In ethanol 80 % (volume fraction) at 20 °C
It shall not be necessary to use more than 3 volumes of ethanol HO % (volume fraction) to obtain a clear solution with I volume of essential oil.
Sometimes opalescence can arise on continuing the addition of ethanol,
4.9 Chromatographic profile
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 of these components, indicated by the integrator, shall be as shown in Table L This constitutes the chromatographic profile of the essential oil.
6 Sampling
Sampling shall be performed in accordance with ISO 212.
Minimum volumeortest sample: 25 ml.
NOTE This volume allows each of the tests specified in this International Standard to be carried out at
least once.
7 Test methods
7.1 Relative density at 20 °C. d
Determine the relative density In accordance with ISO 279.
7.2 Refractive index at 20 °C
Determine the refractive index in accordance with ISO 280.
7.3 Optical rotation at 20°C
Determine the optical rotation in accordance with ISO 592.
7.4 Acid value
Determine the acid value in accordance with ISO 1242.
7.5 Miscibility in ethanol 80 % (volume fraction) at 20 °C Determine the miscibility in ethanol in accordance with ISO 875.
7.6 Chromatographlc profile
Determine the chromatographic profile in accordance with ISO 11024 (all parts).
8 Packaging, labelling, marking and storage
These Items shall be In accordance with ISO/TS 210 and ISO/TS 211.