GB/T 4482-2018Water treatment chemicals—Ferric chloride (English PDF)

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009.

This standard replaces GB/T 4482-2006 "water treatment agent ferric chloride." This standard compares with GB/T 4482-2006 The changes are as follows.

--- Modify the indicator of ferric chloride for water treatment agent (see Table 1, 2006 version of Table 1);

--- Increased zinc content determination (see 6.7);

--- Removed the arsenic speckle method for the determination of arsenic content and replaced it with atomic fluorescence spectrometry (see 6.8.1, 2006 version 5.5.1);

--- Removed spectrophotometric determination of mercury content, instead of atomic fluorescence spectrometry (see 6.10.1, 2006 version 5.7.1);

--- Change the determination of chromium [Cr(VI)] content to chromium content, and change the method to electric heating atomic absorption spectrometry (see 6.12, 2006 edition of 5.9).

1 Scope

This standard specifies the classification, requirements, test methods, inspection rules, signs, packaging, transportation and storage of ferric chloride as a water treatment agent.

This standard applies to water treatment agent ferric chloride. The product is mainly used for drinking water, industrial water, waste water treatment and sludge dewatering treatment.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this document. For undated references, the latest version (including all amendments) applies to this document.

GB 190 Dangerous Goods Packaging Mark

GB/T 601 Preparation of Chemical Reagent Standard Titration Solution

GB/T 602 Preparation of standard solution for determination of impurities in chemical reagents

GB/T 603 Preparation of preparations and products used in chemical reagent test methods

GB/T 610-2008 General method for arsenic determination of chemical reagents

GB/T 6678 sampling rules for chemical products

GB/T 6682 Analysis Laboratory Water Specifications and Test Methods

GB 6944-2012 Dangerous Goods Classification and Article No.

GB/T 8170 Representation and Determination of Numerical Rounding Rules and Limit Values

GB/T 22594-2008 General rules for the determination of water treatment agent density

3 Molecular formula

Molecular Formula. FeCl3 or FeCl3·6H2O

Relative molecular mass. 162.20 or 270.30 (calculated as international relative atomic mass in 2013)

4 Category

The water treatment agent ferric chloride is divided into two categories according to its use.

--- I. For the treatment of drinking water, the soluble acid in the raw materials of this application should use industrial synthetic hydrochloric acid, iron should be high purity iron;

--- Class II. Industrial water, waste water treatment and sludge dewatering treatment.

5 Requirements