GB/T 623-2024 English PDF

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GB/T 623-2024: Chemical reagent - Perchloric acid
Status: Valid

GB/T 623: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 623-2024	199	Add to Cart	3 days	Chemical reagent - Perchloric acid	Valid
GB/T 623-2011	209	Add to Cart	3 days	Chemical reagent -- Perchloric acid	Valid
GB/T 623-1992	279	Add to Cart	3 days	Chemical reagent--Perchloric acid	Obsolete

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Basic data

Standard ID: GB/T 623-2024 (GB/T623-2024)
Description (Translated English): Chemical reagent - Perchloric acid
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G62
Classification of International Standard: 71.040.30
Word Count Estimation: 10,147
Date of Issue: 2024-09-29
Date of Implementation: 2025-04-01
Older Standard (superseded by this standard): GB/T 623-2011
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 623-2024: Chemical reagent - Perchloric acid

---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-Perchloric acid Chemical reagents. Perchloric acid ICS 71.040.30 CCS G62 National Standard of the People's Republic of China Replaces GB/T 623-2011 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 623-2011 "Chemical reagent perchloric acid". Compared with GB/T 623-2011, except for the structural adjustment and compilation In addition to logical changes, the main technical changes are as follows. The determination methods of manganese, iron, copper, silver and lead have been changed (see 6.14, 5.14, 5.15, 5.16, 5.17, 5.18); The packaging and labeling have been changed (see Chapter 8, Chapter 7 of the.2011 edition). - 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 Guangshi Reagent Technology Co., Ltd., Beijing Chemical Reagent Research Institute Co., Ltd., Guangdong Guanghua Technology Co., Ltd., Cangzhou Xinyuanquan Chemical Co., Ltd., and Shanghai Aladdin Biochemical Technology Co., Ltd. The main drafters of this document are. Zhang Junxiang, Cao Juan, Wu Ronghui, Li Binghua, Zhao Jifei, Wang Yuhua, Han Baoying, Xu Bin, Wang Zengyun, Xu Jiuzhen. This document was first issued in 1965, revised for the first time in 1977, revised for the second time in.1992, and revised for the third time in.2011. Fourth revision. Chemical reagents. Perchloric acid WARNING. Some of the test procedures specified in this document may result in hazardous situations and it is the user's responsibility to take appropriate safety and health measures.

1 Scope

This document specifies the properties, technical requirements, test methods, inspection rules, packaging and marking of the chemical reagent perchloric acid. This document applies to the inspection of the chemical reagent perchloric acid. Note. The molecular formula of chemical reagent perchloric acid is HClO4, the relative molecular mass is 100.45 (according to the 2022 International Relative Atomic Mass), and the CAS number is 7601﹘90﹘3.

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 605 General method for colorimetric determination of 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 9727 General method for determination of phosphate in chemical reagents GB/T 9728 General method for determination of sulfate in chemical reagents GB/T 9729 General method for determination of chloride in chemical reagents GB/T 9741-2008 General method for determination of ignition residue of chemical reagents GB/T 9742 General method for determination of silicate in chemical reagents GB 15258 Provisions for the preparation of chemical safety labels GB 15346 Chemical reagent packaging and marking 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

Perchloric acid is a colorless, transparent liquid with strong corrosiveness and oxidizing properties. It is very likely to explode when in contact with organic matter or metal powders or when heated. ......

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