GB/T 39952-2021Titanium dioxide-based dispersion for photocatalysis (English PDF)
二氧化钛基光催化分散液
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
April 30, 2021
Implementation date
November 1, 2021
Scope
GB/T 39952-2021 is the English-translated version of 二氧化钛基光催化分散液.
GB/T 39952-2021 is the product standard for water-miscible photocatalytic dispersions based on titanium dioxide that respond to ultraviolet or visible light.
It divides the products into an ultraviolet (UV) responsive type and a visible light (VIS) responsive type, and requires the label to state the total solid content, the titanium mass fraction calculated as TiO2, the pH value and the product category.
It sets the requirements, starting with a uniform dispersion without obvious stratification, together with the test methods, inspection rules, marking, packaging, transport and storage.
Its normative references include the general sampling rules of GB/T 6678 and GB/T 6680 and the laboratory water specification GB/T 6682. Manufacturers and testing bodies can use it to classify and check these dispersions. It was issued on 30 April 2021 and has applied since 1 November 2021.
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Document preview — GB/T 39952-2021
National Standard of the People's Republic of China
- ICS
- 87.040
- Classification
- G 52
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Foreword
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Product classification and marking
- 5 Requirements
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
1 Scope
This standard specifies the product classification and marking, requirements, test methods, inspection rules, markings, packaging, Transportation and storage.
This standard is mainly applicable to water-miscible titanium dioxide-based photocatalytic dispersions that are responsive to ultraviolet light and visible light.
2 Normative references
The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this document. For undated reference documents, the latest version (including all amendments) is applicable to this document.
GB/T 6678 General Rules for Sampling of Chemical Products
GB/T 6680 General Rules for Sampling of Liquid Chemical Products
GB/T 6682 Analytical laboratory water specifications and test methods
Cosmetic safety technical specifications (2015 edition)
3 Terms and definitions
The following terms and definitions apply to this document.
4 Product classification and marking
4.1 Classification
According to different responsive light sources, products can be divided into two categories.
a) Ultraviolet (UV) responsive type;
b) Visible light (VIS) response type.
4.2 Marking
The product label should indicate the total solid content, titanium mass fraction (calculated as TiO2), pH value and product category.
5 Requirements
5.1 Appearance
Uniform dispersion, no obvious stratification.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Referenced standards
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Related Standards
GB/T 6678-2003 — General principles for sampling chemical products
GB/T 6680-2003 — General rules for sampling liquid chemical products
GB/T 6682-2008 — Water for analytical laboratory use - Specification and test methods
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GB/T 39952-2021
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