GB/T 23963-2023Diethylamine for industrial use (English PDF)

Foreword

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

This document replaces GB/T 23963-2009 "Diethylamine for Industrial Use". Compared with GB/T 23963-2009, except for structural adjustment and editing In addition to sexual changes, the main technical changes are as follows.

---Deleted the qualified product indicator and canceled the product grade (see Table 1 of the 2009 version);

---"Diethylamine" was changed from ">=99.5%" (excellent product) to ">=99.7%" (see Table 1, Table 1 of the 2009 version);

---Changed the determination method of moisture (see 5.3, 4.5 of the 2009 edition);

---The "Safety" part has been adjusted to an informative appendix (see Appendix A, Chapter 7 of the 2009 edition).

1 Scope

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

This document applies to industrial diethylamine produced by catalytic ammoniation using ethanol as raw material in the presence of hydrogen.

Note: Diethylamine molecular formula. C4H11N, structural formula. CH3-CH2-NH-CH2-CH3, relative molecular mass. 73.14 (according to the 2022 International Relative Atoms quality).

2 Normative reference documents

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

GB 190 Dangerous goods packaging markings

GB/T 3143 Liquid chemical product color determination method (Hazen unit---platinum-cobalt color number)

GB/T 6283 Determination of moisture content in chemical products Karl Fischer method (general method)

GB/T 6324.8 Test methods for organic chemical products Part 8: Determination of moisture content of liquid products by Karl Fischer coulombometry

GB/T 6678 General principles for sampling of chemical products

GB/T 6680 General rules for sampling of liquid chemical products

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

GB/T 23961 Determination of low-carbon fatty amine content by gas chromatography

3 Terms and definitions

There are no terms or definitions to be defined in this document.

4 Requirements

4.1 Appearance. Transparent liquid, no visible mechanical impurities.

4.2 Diethylamine for industrial use should comply with the technical requirements in Table 1.