Natural fatty alcohols
1 Scope
This standard specifies the product classification, requirements, test methods, inspection rules, as well as marking, packaging, transportation and storage of natural fatty alcohols.
This standard is applicable to the series of primary fatty alcohols prepared from natural vegetable oils and their derivatives by alcoholysis or hydrolysis, esterification, hydrogenation and distillation.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
GB/T 617 Chemical reagent - General method for the determination of melting range
GB/T 6682 Water for analytical laboratory use - Specification and test methods
GB/T 7383-2007 Non-ionic surface active agents - Determination of hydroxyl value
GB/T 9282.1 Clear liquids - Estimation of colour by the platinum-cobalt scale - Part 1: Visual method
GB/T 11275 Surface active agents - Determination of water content
QB/T 2739-2005 Preparations of standard volumetric solutions of general test methods for washing products
Safety and technical standards for cosmetics
3 Product classification
Natural fatty alcohols are classified into C8~10 alcohol, C12~14 alcohol, C14~16 alcohol, C16~18 alcohol, C8 alcohol, C10 alcohol, C12 alcohol, C14 alcohol, C16 alcohol and C18 alcohol based on carbon chain length, and the molecular formula and average relative molecular mass are shown in Table 1.
Table 1 Molecular formula and average relative molecular mass of various natural fatty alcohols
Category Molecular formula Average relative molecular mass
C8~10 alcohol C8~10H17~21OH 130~158
C12~14 alcohol C12~14H25~29OH 186~214
C14~16 alcohol C14~16H29~33OH 214~242
C16~18 alcohol C16~18H33~37OH 242~270
C8 alcohol C8H17OH 130
C10 alcohol C10H21OH 158
C12 alcohol C12H25OH 186
C14 alcohol C14H29OH 214
C16 alcohol C16H33OH 242
C18 alcohol C18H37OH 270
4 Requirements
Natural fatty alcohols have inherent characteristic odor, and their physical and chemical indexes shall meet those specified in Table 2, and shall also meet those specified in Table 3 when the natural fatty alcohols are used as raw materials of cosmetics.
Foreword i
1 Scope
2 Normative references
3 Product classification
4 Requirements
5 Test methods
6 Inspection rules
7 Marking, packaging, transportation and storage
