GB/T 23960-2009 English PDF

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GB/T 23960-2009: Catechol for industrial use
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 23960-2009	229	Add to Cart	3 days	Catechol for industrial use	Valid

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Basic data

Standard ID: GB/T 23960-2009 (GB/T23960-2009)
Description (Translated English): Catechol for industrial use
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G17
Classification of International Standard: 71.080.90
Word Count Estimation: 10,133
Date of Issue: 2009-06-02
Date of Implementation: 2010-02-01
Quoted Standard: GB 190; GB/T 617-2006; GB/T 1250; GB/T 6678-2003; GB/T 6679-2003; GB/T 6682-2008; GB/T 7531-2008
Regulation (derived from): National Standard Approval Announcement 2009 No.8 (Total No.148)
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard specifies the requirements for industrial catechol, test methods, inspection rules, signs, packaging, transport, storage and security. This standard applies to the legal system of phenol hydroxylation industrial production of ortho -diphenol stupid, inspection and sales.

GB/T 23960-2009: Catechol for industrial use

---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.
Catechol for industrial use ICS 71.080.90 G17 National Standards of People's Republic of China Industrial catechol Posted 2009-06-02 2010-02-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

Appendix A of this standard is a normative appendix. The standard proposed by China Petroleum and Chemical Industry Association. This standard by the National Standardization Technical Committee branch of organic chemistry (SAC/TC63/SC2) centralized. This standard was drafted. Chemical Industry Co., Ltd. Lianyungang Sanjili. Participated in the drafting of this standard. Rhodia Zhenjiang Chemicals Limited. The main drafters of this standard. Liu marked, Chensu Qing, Xu Juan, Wang Hengqi. Industrial catechol

1 Scope

This standard specifies the requirements for industrial use catechol, test methods, inspection rules, marking, packaging, transportation, storage, and security. This standard applies to legal hydroxylation of phenol was catechol industrial production, testing and marketing. Molecular formula. C6H6O2 Structure. handkerchief  division OH OH Molecular weight. 110.11 (according to 2007 international relative atomic mass)

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. GB 190 packaging and marking of dangerous goods GB/T 617-2006 Chemical Reagent melting range determination General Method Representation GB/T 1250 limit values \u200b\u200band the method of determining GB/T 6678-2003 General Principles for Sampling Chemical Products GB/T 6679-2003 General rules for sampling solid chemical products GB/T 6682-2008 analytical laboratory use specifications and test methods (ISO 3696. 1987, MOD) GB/T 7531-2008 organic chemical products Determination of residue on ignition (ISO 6353-1. 1982, NEQ)

3 Requirements

3.1 Appearance. light gray to light brown crystals. 3.2 Industrial catechol shall comply with the technical requirements in Table 1 below. Table 1 Technical Requirements project index Excellence Qualified Catechol, w1 /% ≥ 99.0 98.0 Final melting point/℃ 103 ~ 106 Residue on ignition, w1 /% ≤ 0.04 Test Method 4 4.1 Warning Some test procedures prescribed test method can lead to dangerous situations, the operator should take appropriate safety and health practices. Standards with nitric acid, hydrochloric acid and other corrosive chemicals, care should be taken to avoid skin contact. 4.2 General provisions Unless otherwise indicated in the analysis using only recognized as an analytical reagent and water in line with GB/T 6682-2008 stipulated. ......

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