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GB/T 23959-2009Hydroquinone for industrial use (English PDF)

工业用对苯二酚

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

June 2, 2009

Implementation date

February 1, 2010

Scope

GB/T 23959-2009 is the English-translated version of 工业用对苯二酚.

GB/T 23959-2009 is the Chinese standard "Hydroquinone for industrial use". Its scope clause reads: This standard specifies the industrial use of hydroquinone technical requirements, test methods, inspection rules and signs, packaging, transportation, storage, and security.

This standard applies to phenol hydroxylation law or legal system of industrial aniline hydroquinone production, testing and marketing. Molecular formula. C6H6O2 Structure. handkerchief handkerchief handkerchief Division division division --- division division division OH OH Molecular weight.

110.11 (according to 2007 international relative atomic mass). Its clauses include requirements.

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Document preview — GB/T 23959-2009

National Standard of the People's Republic of China

ICS
71.080.90
Classification
G 17

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Contents

  • 1 Scope
  • 2 Normative references
  • 3 Requirements
  • 3.1 Appearance

1 Scope

This standard specifies the industrial use of hydroquinone technical requirements, test methods, inspection rules and signs, packaging, transportation, storage, and security.

This standard applies to phenol hydroxylation law or legal system of industrial aniline hydroquinone production, testing and marketing.

Molecular formula. C6H6O2

Structure. handkerchief handkerchief handkerchief

Division division division

--- division division 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

Preparation of GB/T 601-2002 Chemical Reagent standard titration solution

GB/T 602-2002 Chemical Reagent preparation impurity standard solution was determined by (ISO 6353-1. 1982, NEQ)

GB/T 603-2002 Chemical Reagent Test Methods Preparations with (ISO 6353-1. 1982, NEQ)

GB/T 617-2006 Chemical Reagent melting range determination General Method

Representation GB/T 1250 limit values and 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)

3 Requirements

3.1 Appearance

excellent product is white or nearly white solid, qualified as a white or light-colored solid.

3.2

Industrial hydroquinone should meet the technical requirements in Table 1 below.

Table 1 Technical Requirements project index

Excellence Qualified

Hydroquinone, w1/99.0 to 100.5%

Catechol, w1 /% <= 0.05

Final melting point/°C 171 ~ 175

Residue on ignition, w1 /% <= 0.10 0.30

Heavy metals (Pb), w1 /% <= 0.002 -

GB/T 22053-2020 | GB/T 26026-2010 | GB/T 24768-2009 | GB/T 23953-2025 | GB/T 23963-2023 | GB/T 23962-2023 | […]

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

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