GB/T 674-2024 English PDF

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GB/T 674-2024: Chemical reagent - Cupric oxide powder
Status: Valid

GB/T 674: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 674-2024	279	Add to Cart	3 days	Chemical reagent - Cupric oxide powder	Valid
GB/T 674-2003	139	Add to Cart	2 days	Chemical reagent -- Copper (Ⅱ) oxide powder	Valid
GB/T 674-1978	199	Add to Cart	2 days	Chemical reagents--Powdered copper oxide	Obsolete

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Basic data

Standard ID: GB/T 674-2024 (GB/T674-2024)
Description (Translated English): Chemical reagent - Cupric oxide powder
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G62
Classification of International Standard: 71.040.30
Word Count Estimation: 14,127
Date of Issue: 2024-09-29
Date of Implementation: 2025-04-01
Older Standard (superseded by this standard): GB/T 674-2003
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 674-2024: Chemical reagent - Cupric oxide powder

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Chemical reagent - Cupric oxide powder Chemical reagent powdered copper oxide ICS 71.040.30 CCS G62 National Standard of the People's Republic of China Replace GB/T 674-2003 Released on 2024-09-29 2025-04-01 Implementation State Administration for Market Regulation The National Standardization Administration issued

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents" Drafting is required. This document replaces GB/T 674-2003 "Chemical reagent powdered copper oxide". Compared with GB/T 674-2003, in addition to the structural adjustment In addition to editorial changes, the main technical changes are as follows. Added high purity levels and technical requirements, and determination methods (see Chapter 5 and Chapter 6); - Added technical requirements and determination methods for analytically pure and chemically pure sodium, magnesium, potassium and calcium (see Chapter 5, 6.10, 6.11); Added the calculation formula of hydrochloric acid insoluble matter (see 6.3); - The determination methods of chloride and sulfur compounds have been changed (see 6.5, 6.6, 5.3, 5.4 of the.2003 edition); - Salicylic acid x hypochlorite colorimetric method with added total nitrogen (see 6.7); - Added the calculation formula for cuprous oxide (see 6.9); - Added the determination method of analytically pure and chemically pure iron by inductively coupled plasma atomic emission spectrometry (see 6.11.1); - Changes to packaging and labeling (see Chapter 8, Chapter 7 of the.2003 edition); - The specifications and tests for hydrogen sulfide non-precipitate (see Chapter 4 and 5.9 of the.2003 edition) have been deleted. Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents. This document was proposed by the China Petroleum and Chemical Industry Federation. This document is under the jurisdiction of the Chemical Reagents Subcommittee of the National Technical Committee for Chemical Standardization (SAC/TC 63/SC 3). This document was drafted by. Guangdong Guanghua Technology Co., Ltd., Beijing Institute of Chemical Reagents Co., Ltd., Beijing Huateng Testing Certification Co., Ltd. and Xi'an Zhongjianke Testing and Certification Technology Co., Ltd. The main drafters of this document are. Zhou Yilang, Xu Bin, Liao Huana, Lin Chuqing, Wang Yuhua, Han Baoying, Zhao Jifei, Ju Rongling, Peng Hui, Yang Peijie and Zhang Minli. This document was first issued in 1965, revised for the first time in 1978, revised for the second time in.2003, and this is the third revision. Chemical reagent powdered copper oxide

1 Scope

This document specifies the properties, technical requirements, test methods, inspection rules, packaging and marking of powdered copper oxide as a chemical reagent. This document applies to the inspection of powdered copper oxide in chemical reagents. Note. The molecular formula of chemical reagent powdered copper oxide is CuO, the relative molecular mass is 79.55 (according to the 2022 international relative atomic mass), and the CAS number is 1317﹘38﹘0.

2 Normative references

The contents of the following documents constitute the essential clauses of this document through normative references in this document. For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies. in this document. GB/T 601 Preparation of standard titration solutions for chemical reagents GB/T 602 Preparation of standard solutions for determination of impurities in chemical reagents GB/T 603 Preparation of preparations and products used in chemical reagent test methods GB/T 609-2018 General method for determination of total nitrogen in chemical reagents GB/T 610-2008 General method for determination of arsenic in chemical reagents GB/T 6682 Specifications and test methods for water used in analytical laboratories GB/T 9723-2007 General rules for flame atomic absorption spectrometry of chemical reagents GB/T 9728 General method for determination of sulfate in chemical reagents GB 15346 Chemical reagent packaging and marking GB/T 21191 Atomic Fluorescence Spectrometer GB/T 23942-2009 General rules for inductively coupled plasma atomic emission spectrometry of chemical reagents HG/T 3921 Chemical Reagent Sampling and Acceptance Rules

3 Terms and definitions

There are no terms or definitions that require definition in this document.

4 Properties

Powdered copper oxide is a black powder that is insoluble in water but soluble in acid.

5 Technical requirements

The technical requirements for powdered copper oxide are shown in Table 1. ......

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