Standard No.:	GB/T 14454.5-2008
Chinese Name:	香料 旋光度的测定
English Name:	Fragrance/Flavor substances—Determination of optical rotation
Professional Classification:	Y41 Fragrances and flavors
Professional Classification:	GB National Standard
ICS Classification:	71.100.60 Essential oils
Issued by:
Issued on:	2008-07-15
Implemented on:	2008-11-01
Status:	VALID
Replace:	GB/T14454.5-1993 Aromatics. Determination of optical rotation
Language:	English
File Format:	PDF
Word Count:	4000 words
Price(USD):	120 (USD)
Delivery:	via email in 1-3 business day

Fragrance/Flavor substances - Determination of optical rotation

1 Scope

This part of GB/T 14454 specifies a method for determining the optical rotation of fragrance/flavor substances.

This part is applicable to the determination of optical rotation of fragrance/flavor substances; when dealing with solid fragrance/flavor substances, partially solid fragrance/flavor substances, fragrance/flavor substances that are highly viscous at room temperature, or highly colored fragrance/flavor substances, this determination is carried out on a solution of the fragrance/flavor substances.

2 Normative references

The following documents contain provisions which, through reference in this part of GB/T 14454, constitute provisions of this part. For dated references, subsequent amendments (excluding corrections), or revisions, of any of these publications do not apply to this part. However, parties to agreements based on this part are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest editions apply to this part.

GB/T 14454.1 Fragrance/Flavor substances - Preparation of test samples (GB/T 14454.1-2008, ISO 356: 1996, MOD)

3 Terms and definitions

For the purposes of this part of GB/T 14454, the following terms and definitions apply.

3.1
optical rotation
angle, expressed in milliradians or degrees of angle, described by the polarization plane of a luminous radiation whose wavelength is 589.3±0.3nm, corresponding to the D lines of sodium, when such light travels through a thickness of 100mm of fragrance/flavor substances under given conditions of temperature

Note: When the determination is carried out on different thickness, the value of optical rotation shall be computed by reference to a thickness of 100mm.