GB/T 11540-2008 in English

《GB/T 11540-2008香料 相对密度的测定》由TC257（全国香料香精化妆品标准化技术委员会）归口，TC257SC1（全国香料香精化妆品标准化技术委员会香料香精分会）执行，主管部门为中国轻工业联合会。
本标准规定了在一定温度下测定香料相对密度的方法。
本标准适用于精油、单离及合成香料相对密度的测定。

Fragrance/Flavor substances - Determination of relative density

1 Scope

This standard specifies a method for the determination of the relative density of fragrance/flavor substances at a given temperature.

This standard is applicable to the determination of relative density of essential oils, isolate and synthetic fragrance/flavor substances.

2 Normative references

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

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 standard, the following terms and definitions apply.

3.1
relative density
ratio of the mass of a given volume of fragrance/flavor substances at a given temperature (t℃) to the mass of an equal volume of distilled water at the same temperature

Note: This quantity is dimensionless and its symbol is d_t^t.

3.2
absolute density
ratio of the mass of a given volume of the fragrance/flavor substances at a given temperature (t℃) to the same volume

Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagents
6 Apparatus
7 Preparation of test sample
8 Operating procedures
9 Expression of results
10 Test report
Annex A (Normative) Operating procedures of pyknometer
Annex B (Normative) Westphal balance method