GB/T 19591-2023Nano-titanium dioxide (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 19591-2004 "Nano titanium dioxide". Compared with GB/T 19591-2004, except for structural adjustment and editing in addition to sexual changes, the main technical changes are as follows.

a) Added a chapter on terms and definitions (see Chapter 3);

b) The classification has been changed (see 5.1, Chapter 3 of the 2004 edition);

c) Added code name (see 5.2);

d) The indicator parameters have been changed, adjusted according to the new product classification, and the indicator item of moisture has been changed to 105°C volatile matter (see 6.2, 4.2 of the 2004 edition), the index items and parameters of tap density and iron oxide are added (see 6.2), and the packing density is deleted degree indicator items (see 4.2 of the 2004 version);

e) Change the test method for moisture determination to 105°C volatile matter determination (see 7.5, 5.12 of the 2004 edition);

f) Added test method for determination of pH value of titanium dioxide by gas phase method (see 7.8.2);

g) Test method with added tap density (see 7.12);

h) The test method for determination of arsenic content has been changed (see 7.13, 5.10 of the 2004 edition);

i) The test method for determination of lead content has been changed (see 7.14, 5.11 of the 2004 edition);

j) The test method for mercury content determination has been changed (see 7.15, 5.9 of the 2004 edition);

k) Added test methods for determination of ferric oxide content (see 7.16);

l) The test method for bulk density determination has been deleted (see 5.15 of the 2004 edition).

1 Scope

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

This document applies to unmodified uncoated titanium dioxide nanoparticles.

Note: This product is mainly used in the manufacturing fields of functional chemical fibers, high-grade plastics, paints, inks, coatings, electronic ceramics, catalysts and their carriers.

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/T 191-2008 Packaging, storage and transportation pictorial markings

GB/T 1706-2006 Titanium dioxide pigment

GB/T 3049-2006 General method for determination of iron content in industrial chemical products 1,10-phenanthroline spectrophotometry

GB 5009.11 National food safety standard Determination of total arsenic and inorganic arsenic in food

GB 5009.12 National food safety standard Determination of lead in food

GB 5009.17 National food safety standard Determination of total mercury and organic mercury in food

GB 5009.75 National Food Safety Standard Determination of Lead in Food Additives

GB 5009.76 National Food Safety Standard Determination of Arsenic in Food Additives

GB/T 6678 General principles for sampling of chemical products

GB/T 6682-2008 Specifications and test methods for water used in analytical laboratories

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

GB/T 9086-2007 Standard white plates for colorimetric and photometric measurements

GB/T 19587 Determination of specific surface area of solid materials by gas adsorption BET method

GB/T 20020-2013 Fumed silica

GB/T 21354 General method for determination of tap density of powder products

GB/T 23769-2009 General method for determination of pH value in aqueous solutions of inorganic chemical products

GB/T 23947.2 General method for determination of arsenic in inorganic chemical products Part 2: Arsenic spot method

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

3 Terms and definitions

The following terms and definitions apply to this document.