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GB/T 22407-2008 English PDF

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GB/T 22407-2008: Photography -- Processing chemicals -- Specifications for sodium tetraborate decahydrate
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GB/T 22407-2008English114 Add to Cart 3 days [Need to translate] Photography -- Processing chemicals -- Specifications for sodium tetraborate decahydrate Valid GB/T 22407-2008

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Basic data

Standard ID GB/T 22407-2008 (GB/T22407-2008)
Description (Translated English) Photography -- Processing chemicals -- Specifications for sodium tetraborate decahydrate
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard G84
Classification of International Standard 37.040.30
Word Count Estimation 6,624
Date of Issue 2008-10-10
Date of Implementation 2009-06-01
Quoted Standard GB/T 20432.1-2006; GB/T 20432.5-2007; GB/T 20432.9-2007
Adopted Standard ISO 3621-1994, IDT
Regulation (derived from) National Standard Approval Announcement 2008 No.17 (Total No.130)
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 test methods for photographic grade sodium tetraborate decahydrate purity requirements and test purity.

GB/T 22407-2008: Photography -- Processing chemicals -- Specifications for sodium tetraborate decahydrate


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Photography. Processing chemicals. Specifications for sodium tetraborate decahydrate ICS 37.040.30 G84 National Standards of People's Republic of China GB/T 22407-2008/ISO 3621.1994 Photography - Processing chemicals - sodium tetraborate decahydrate (ISO 3621.1994, IDT) Posted 2008-10-10 2009-06-01 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 3621.1994 "photographic processing chemicals --- --- sodium tetraborate decahydrate norms" (in English). This standard is equivalent translation ISO 3621.1994. For ease of use, this standard made the following editorial changes. --- "This International Standard" or "ISO 3621" to "this standard"; "." --- With a decimal point instead of a comma as the decimal point, ""; --- Delete ISO 3621.1994 Foreword Introduction; --- The international instruments listed in Chapter 2, "Normative references" instead equivalents translate national standards. 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 22407-2008/ISO 3621.1994 Photography - Processing chemicals - sodium tetraborate decahydrate

1 Scope

This standard specifies the test method for a photographic grade sodium tetraborate decahydrate purity requirements and test purity.

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) Part 9 GB/T 20432.9-2007 Photographic grade chemicals - Test method. Reaction of silver nitrate and ammonia solution (ISO 10349-9.1992, IDT)

3 Overview

3.1 Physical properties Sodium tetraborate decahydrate (Na2B4O7 · 10H2O) as a white crystalline powder, relative molecular mass of 381.37. 3.2 Hazard Sodium tetraborate decahydrate no risk in taking the usual protection operation. 3.3 HANDLING AND STORAGE Sodium tetraborate decahydrate should be stored in airtight containers at room temperature.

4 Requirements

Requirement in Table 1. Table 1 Requirements Project Test Limit Test Standard Terms Content /% ≥ 99.0 7.1 This standard The mass fraction of heavy metals (Pb) /% ≤ 0.002 7.2 GB/T 20432.5-2007 The mass fraction of iron (as Fe) /% ≤ 0.003 7.3 GB/T 20432.5-2007 The reaction of ammonia and silver nitrate solution qualified 7.4 GB/T 20432.9-2007 pH value of 9.14 ~ 9.34 7.5 standard Appearance transparent solution without insolubles (except micro floc) 7.6 standard

5 Reagents and glassware

Unless otherwise specified, all reagents, glassware and materials shall comply with GB/T 20432.1-2006 requirements. Detailed operation step Hazard warning symbol for step instructions, see GB/T 20432.1-2006. These symbols are only to provide information for the user, not GB/T 22407-2008/ISO 3621.1994

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