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GB/T 22398-2008 English PDF

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GB/T 22398-2008: Photography -- Processing chemicals -- Specifications for potassium hydroxide
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GB/T 22398-2008English134 Add to Cart 3 days [Need to translate] Photography -- Processing chemicals -- Specifications for potassium hydroxide Valid GB/T 22398-2008

PDF similar to GB/T 22398-2008


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Basic data

Standard ID GB/T 22398-2008 (GB/T22398-2008)
Description (Translated English) Photography -- Processing chemicals -- Specifications for potassium hydroxide
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard G84
Classification of International Standard 37.040.30
Word Count Estimation 7,745
Date of Issue 2008-09-24
Date of Implementation 2009-05-01
Quoted Standard GB/T 20432.1-2006; GB/T 20432.5-2007; GB/T 20432.6-2008; GB/T 20432.7-2007
Adopted Standard ISO 3625-1994, IDT
Regulation (derived from) National Standard Approval Announcement 2008 No.16 (Total No.129)
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 chemical photographic grade potassium hydroxide (danger: {C}) purity requirements and test methods for testing purity.

GB/T 22398-2008: Photography -- Processing chemicals -- Specifications for potassium hydroxide

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Photography. Processing chemicals. Specifications for potassium hydroxide ICS 37.040.30 G84 National Standards of People's Republic of China GB/T 22398-2008/ISO 3625.1994 Photography - Processing chemicals - potassium hydroxide (ISO 3625.1994, IDT) Posted 2008-09-24 2009-05-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard is identical with ISO 3625.1994 "Photography - Processing chemicals - potassium norms" (in English). This standard is equivalent translation ISO 3625.1994. For ease of use, this standard made the following editorial changes. --- "This International Standard" or "ISO 3625" to "this standard"; "." --- With a decimal point instead of a comma as the decimal point, ""; --- Delete ISO 3625.1994 Foreword Introduction; --- The Chapter 2, "Normative References" section listed in international documents equivalents translated national standards instead. Please note that some of the content of this standard may involve patents, the issuing authority of this standard should not bear the responsibility to identify these patents. The standard proposed by China Petroleum and Chemical Industry Association. The photosensitive material standard by the National Standardization Technical Committee (SAC/TC102) centralized. This standard was drafted. China Lucky Film Group Corporation Baoding Lucky Chemical Co., photography. Drafters of this standard. Jingbo places. GB/T 22398-2008/ISO 3625.1994 Photography - Processing chemicals - potassium hydroxide

1 Scope

This standard specifies the photographic grade chemical potassium hydroxide (danger. "C") Test Method 1) purity requirements and test purity. 1) Hazard warning symbol as defined in GB/T 20432.1-2006 in Chapter 4.

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/T 20432.1-2006 Photographic grade chemicals - Test methods - Part 1. General (ISO 10349-1.2002, IDT) Determination of heavy metals and iron content. GB/T 20432.5-2007 Photographic grade chemicals - Test methods - Part 5 (ISO 10349-5.1992, IDT) Determination of halide content. GB/T 20432.6-2008 Photographic grade chemicals - Test methods - Part 6 (ISO 10349-6.1992, IDT) Determination of acidity or alkalinity. GB/T 20432.7-2007 Photographic grade chemicals - Test methods - Part 7 (ISO 10349-7.1992, IDT)

3 Overview

3.1 Physical properties Potassium hydroxide (KOH) as a white strip, spherical, tabular grains or powder, relative molecular mass of 56.11. 3.2 Hazard Potassium hydroxide is corrosive (dangerous. "C"), Avoid contact with eyes, skin and clothing. Avoid breathing dust. See the manufacturer's material Quality safety data sheets (MSDS) Additional Information. 3.3 HANDLING AND STORAGE Potassium hydroxide should be stored in airtight posted a complete identification of the plastic container, hygroscopic exothermic violent reaction with acids.

4 Requirements

Requirement in Table 1. Table 1 Requirements Project Test Limit Test Standard Terms Content /% ≥ 85.0 7.1 This standard Heavy metal content (Pb) /% ≤ 0.002 7.2 GB/T 20432.5-2007 Iron content (as Fe) /% ≤ 0.0005 7.3 GB/T 20432.5-2007 Halide content (Cl- meter) /% ≤ 0.3 7.4 GB/T 20432.6-2008 Carbonate content (as CO 2-3 meter) /% ≤ 1.3 7.5 This standard Appearance transparent solution without insolubles (except micro floc) 7.6 standard GB/T 22398-2008/ISO 3625.1994

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