GB/T 20200-2022Sodium alpha-olefin sulfonate (English PDF)

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules for Standardization Documents" drafting.

This document replaces GB/T 20200-2006 "Sodium alpha-Alkenyl Sulfonate". Compared with GB/T 20200-2006, except for structural adjustment and editing In addition to sexual changes, the main technical changes are as follows.

a) Changed the color requirements (see 5.3, 4.3 of the 2006 edition);

b) The test method for active substance content (method 2) has been added (see 6.3.2);

c) Changed the test method for the content of unsulfonated substances (see 6.4, 5.3 of the 2006 edition);

d) Added the test method for sodium sulfate content (method 2) (see 6.5.2);

e) Changed the color test method (see 6.7, 5.6 of the 2006 edition);

f) Deleted "Colorimetric Method for Determination of Color of Sodium alpha-Alkenyl Sulfonate" (see Appendix A of the 2006 edition).

1 Scope

This document specifies the technical requirements, test methods, inspection rules, marking, packaging, transportation and storage.

This document is applicable to the production of single-carbon or mixed-carbon alpha-olefins with an alkane chain length of C12~C18 through the gas sulfur trioxide membrane sulfonation process. Sodium alpha-alkenyl sulfonate used in washing and other fields.

2 Normative references

The contents of the following documents constitute the essential provisions of this document through normative references in the text. Among them, dated references For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document.

GB/T 3143 Method for Determination of Color of Liquid Chemical Products (Hazen Unit --- Platinum-Cobalt Color Number)

GB/T 5173 Determination of content of anionic active substances in surfactant detergents Direct two-phase titration method

GB/T 6365 Determination of free alkalinity or free acidity of surfactants by titration

GB/T 6366-2012 Determination of Inorganic Sulfate Content in Surfactant Titrimetric Method

GB/T 6682 Analytical laboratory water specifications and test methods

GB/T 8170 Numerical rounding off rules and expression and determination of limit values

GB/T 38729-2020 Surfactant industry primary alkyl sodium sulfate test method

QB/T 4970 Determination of Anionic Surfactant Content in Surfactant Raw Materials and Formulated Products

3 Terms and Definitions

This document does not have terms and definitions that need to be defined.

4 Classification and labeling