GB/T 1621-2023Ferric chloride 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 1621-2008 "Industrial Ferric Chloride". Compared with GB/T 1621-2008, except for structural adjustments and editorial changes, in addition, the main technical changes are as follows.

a) Changed the "scope" (see Chapter 1, Chapter 1 of the 2008 edition);

b) Changed "Molecular formula and relative molecular mass" (see Chapter 4, Chapter 3 of the 2008 edition);

c) "Classification" has been changed (see Chapter 5, Chapter 4 of the 2008 edition);

d) Added the appearance and index requirements for ferric chloride hexahydrate in the "Requirements" (see Chapter 6);

e) Changed the index requirements for industrial ferric chloride (see 6.2, 5.2 of the 2008 edition);

f) The determination method of free acid (calculated as HCl) content has been changed (see 7.6, 6.7 of the 2008 edition);

g) Added methods for determination of sulfate (calculated as SO4), cadmium, arsenic, lead, mercury, chromium and zinc content (see 7.8, 7.9, 7.10, 7.11, 7.12, 7.13, 7.14);

h) Added type inspection (see 8.1);

i) Product packaging, transportation, and storage conditions have been changed (see Chapter 10, Chapter 9 of the 2008 edition).

1 Scope

This document specifies the classification, requirements, test methods, inspection rules, signs, labels and accompanying documents, packaging, transportation and storage.

This document applies to industrial ferric chloride.

Note: This product is mainly used as industrial etchants, catalysts in the chemical industry, extractants in the metallurgical industry, concrete waterproofing and anti-corrosion agents, industrial water treatment and raw materials for preparing other iron salts and pigments, etc.

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 191-2008 Packaging, storage and transportation pictorial markings

GB/T 4472-2011 Determination of density and relative density of chemical products

GB/T 4482-2018 Water treatment agent ferric chloride

GB/T 6678 General principles for sampling of chemical products

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

GB/T 6682 Specifications and test methods for water used in analytical laboratories

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

HG/T 3696.1 Preparation of standard solutions, preparations and products for chemical analysis of inorganic chemical products Part 1: Standard titration solution Preparation of liquid

HG/T 3696.3 Preparation of standard solutions, preparations and products for chemical analysis of inorganic chemical products Part 3: Preparations and products Preparation

HG/T 4538-2022 Water treatment agent ferrous chloride

3 Terms and definitions

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

4 Molecular formula and relative molecular mass

Molecular formula of anhydrous ferric chloride: FeCl3; relative molecular mass: 162.20 (according to the 2022 international relative atomic mass).

The molecular formula of ferric chloride hexahydrate: FeCl3·6H2O; relative molecular mass: 270.29 (according to the 2022 international relative atomic mass).