GB/T 26516-2011 English PDF (GBT26516-2011)

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GB/T 26516-2011: Massage essential oil
GB/T 26516-2011
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 71.100.70
Y 42
Massage Essential Oil
按摩精油
ISSUED ON: MAY 12, 2011
IMPLEMENTED ON: OCTOBER 01, 2011
Issued by: General Administration of Quality Supervision, Inspection and
Quarantine;
Standardization Administration of PRC.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative References ... 4
3 Terms Definitions ... 5
4 Classification ... 5
5 Requirements ... 6
6 Test Methods ... 7
7 Inspection Rules ... 7
8 Marking, Packaging, Transportation, Storage, Shelf Life ... 7
Appendix A (Normative) Test Methods of the Acid Value of the Massage
Essential Oil ... 10
Massage Essential Oil
1 Scope
This Standard specifies the terms and definitions, classification, requirements, test
methods, inspection rules and marking, packaging, transportation, storage and shelf
life requirements of massage essential oil.
This Standard is applicable to massage essential oil products that need to be diluted
with massage base oil before being used for human skin massage and care.
2 Normative References
The provisions in following documents become the provisions of this Standard through
reference in this Standard. For dated references, the subsequent amendments
(excluding corrigendum) or revisions do not apply to this Standard, however, parties
who reach an agreement based on this Standard are encouraged to study if the latest
versions of these documents are applicable. For undated references, the latest edition
of the referenced document applies.
GB 5296.3 Instruction for Use of Consumer Products - General Labelling for
Cosmetics
GB/T 13531.4 General Methods on Determination of Cosmetics - Determination
of Relative Density
GB/T 14454.2-2008 Fragrance/Flavor Substances - Method for Valuation of Odor
GB/T 14454.4 Aromatics - Determination of Refractive Index
QB/T 1684 Inspecting Rules for Cosmetics
QB/T 1685 Requirements of Packaging Appearance for Cosmetic Products
JJF 1070 The Rules of Metrological Inspection for Net Content of Prepackaged
Commodity with Fixed Content
No. 75 Command of the General Administration of Quality Supervision, Inspection
and Quarantine Measures for the Supervision and Management of Quantitative
Packaging Commodities
WJDF [2007] No.1 Hygienic Standard for Cosmetics
It shall conform to the provisions of QB/T 1685.
6 Test Methods
6.1 Sensory indicators
6.1.1 Color and luster
Take the specimen in a 25mL colorimetric tube and observe at room temperature and
under indirect sunlight.
6.1.2 Aroma
It shall be tested as per the method specified in GB/T 14454.2-2008.
6.2 Physical and chemical indicators
6.2.1 Relative density
It shall be tested as per the method specified in GB/T 13531.4.
6.2.2 Refractive index
It shall be tested as per the method specified in GB/T 14454.4.
6.2.3 Acid value
It shall be tested as per the method specified in Appendix A.
6.3 Hygienic indicators
It shall be tested as per the method specified in WJDF [2007] No.1 provisions.
6.4 Net content
It shall be tested as per the method specified in Appendix of JJF 1070.
6.5 Requirements of packaging appearance
It shall be tested as per the method in QB/T 1685.
7 Inspection Rules
It shall be implemented as per QB/T1684.
8 Marking, Packaging, Transportation, Storage, Shelf
Appendix A
(Normative)
Test Methods of the Acid Value of the Massage Essential Oil
A.1 Principle
Titrate the free fatty acids in massage essential oil by potassium hydroxide standard
solution.
A.2 Reagents and materials
Unless otherwise specified, the reagents are analytically pure; and the water is distilled
water or water of equivalent purity.
A.2.1 Ether-ethanol mixture: mix according to ether-ethanol (2+1, volume fraction).
Use the potassium hydroxide solution (3g/L) to neutralize until the phenolphthalein
indicator solution was neutral.
A.2.2 Standard titration solution of potassium hydroxide [c(KOH) = 0.05 mol/L].
A.2.3 Phenolphthalein indicator solution: 10 g/L ethanol solution.
A.3 Instruments
A.3.1 Analytical balance: accuracy of 0.0001g.
A.3.2 Conical flask.
A.3.3 Burette.
A.4 Analysis procedures
Accurately take 3g~5g of sample (accurate to 0.0001g); place it in a conical flask; add
50mL of neutral ether-ethanol mixture (A.2.1); shake to dissolve the oil; and put it in
hot water, if necessary, to promote its dissolution. Cool to room temperature, add 2~3
drops of phenolphthalein indicator solution (A.2.3); titrate by 0.05 mol/L potassium
hydroxide standard titration solution (A.2.2), until it appears reddish; and the end point
is that the solution does not fade within 0.5min.
A.5 Calculation of results
The acid value is calculated according to Formula (A.1):