1、BRITISH STANDARD BS ISO 17531:2002 Photography Processing chemicals Specifications for 4-(N-ethyl-N-2- methanesulfonylaminoethyl)- 2-methylphenylenediamine sesquisulfate monohydrate ICS 37.040.30 BS ISO 17531:2002 This British Standard, having been prepared under the direction of the Consumer Produc
2、ts and Services Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 30 September 2002 BSI 30 September 2002 ISBN 0 580 40491 9 National foreword This British Standard reproduces verbatim ISO 17531:2002 and implements it as the UK
3、national standard. The UK participation in its preparation was entrusted to Technical Committee CPW/42, Photography, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implem
4、ent international publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport
5、 to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee a
6、ny enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the ISO title page, pages ii to v, a
7、blank page, pages 1 to 9 and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date Comments Reference number ISO 17531:2002(E)INTERNATIONAL STANDARD ISO 17531 First edition 2002-06-15 Photography
8、 Processing chemicals Specifications for 4-(N-ethyl-N-2- methanesulfonylaminoethyl)-2- methylphenylenediamine sesquisulfate monohydrate Photographie Produits chimiques de traitement Spcifications pour 4-(N-thyle-N-2-sulfonylaminothyle de mthane)-2-phnylndiamine de mthyle sesquisulfate monohydrat BSI
9、SO17531:2002BSISO17531:2002iiIS:13571 O2002(E) I SO 2002 All irthgs ersedevr iiiContents Page Foreword.iv Introduction.v 1 Scope 1 2 Normative references1 3 General2 3.1 Physical properties2 3.2 Hazardous properties2 3.3 Handling and storage2 4 Requirements.2 5 Reagents and glassware.3 6 Sampling.3
10、7 Test methods .3 7.1 Assay 3 7.2 Identity test.4 7.3 Residue after ignition5 7.4 Heavy metals content5 7.5 Iron content 6 7.6 Volatile matter 6 7.7 Appearance of solution.6 7.8 Photographic-use test.6 Annex A (informative) Preparation of standard ammonium cerium (IV) hexanitrate solution, c(NH4)2Ce
11、(NO3)6 = 0,05 mol/l (27,41 g/l)8 BSISO17531:2002iiiIS:13571 O2002(E) vi I SO 2002 All irthgs ersedevr Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normall
12、y carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the
13、work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3. The main task of technical committees is to prepare In
14、ternational Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of
15、 the elements of this International Standard may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 4834 was prepared by Technical Committee ISO/TC 42, Photography. Annex A of this International Standard is for information only. BSIS
16、O17531:2002ivIS:13571 O2002(E) I SO 2002 All irthgs ersedevr vIntroduction This International Standard is one of a series that establishes criteria of purity for chemicals used in processing photographic materials. General test methods and procedures cited in this International Standard are compiled
17、 in ISO 10349-1. This International Standard is intended for use by individuals with a working knowledge of analytical techniques, which may not always be the case. Some of the procedures utilize caustic, toxic, or otherwise hazardous chemicals. Safe laboratory practice for the handling of chemicals
18、 requires the use of safety glasses or goggles and, in some cases, other protective apparel such as rubber gloves, face masks or aprons. Normal precautions for the safe performance of any chemical procedure shall be exercised at all times, but specific details have been provided for hazardous materi
19、als. Hazard warnings designated by a letter enclosed in angle brackets, , are used as a reminder in those steps detailing handling operations and are defined in ISO10349-1. More detailed information regarding hazards, handling and use of these chemicals may be available from the manufacturer. This I
20、nternational Standard provides chemical and physical requirements for the suitability of a photographic-grade chemical. The tests correlate with undesirable photographic effects. Purity requirements are set as low as possible consistent with these photographic effects. These criteria are considered
21、to be the minimum requirements necessary to assure sufficient purity for use in photographic processing solutions; however, if the purity of a commonly available grade of chemical exceeds photographic processing requirements and if there is no economic penalty in its use, the purity requirements hav
22、e been set to take advantage of the availability of the higher quality material. Every effort has been made to keep the number of requirements to a minimum. Inert impurities are limited to amounts that will not unduly reduce the assay. All tests are performed on samples “as received” to reflect the
23、condition of materials furnished for use. Although the ultimate criterion for suitability of such a chemical is its successful performance in an appropriate use test, the shorter, more economical test methods described in this International Standard are generally adequate. Assay procedures have been
24、 included in all cases where a satisfactory method is available. An effective assay requirement serves not only as a safeguard of chemical purity, but also as a valuable complement to the identity test. Identity tests have been included whenever a possibility exists that another chemical or mixture
25、of chemicals could pass the other tests. All requirements listed in clause 4 are mandatory. The physical appearance of the material and any footnotes are for general information only and are not part of the requirements. Efforts have been made to employ tests that are capable of being run in any nor
26、mally equipped laboratory and, wherever possible, to avoid tests that require highly specialized equipment or techniques. Instrumental methods have been specified only as alternative methods or alone in those cases where no other satisfactory method is available. Over the past several years, great i
27、mprovements have been made in instrumentation for various analyses. Where such techniques have equivalent or greater precision, they may be used in place of the tests described in this International Standard. Correlation of such alternative procedures with the given method is the responsibility of t
28、he user. In case of disagreement in results, the method called for in the specification shall prevail. Where a requirement states “to pass test”, however, alternative methods shall not be used. BSISO17531:2002vINTENRATIONAL TSANDADR IS:13571 O2002(E)I SO 2002 All irthgs ersedevr 1Photography Process
29、ing chemicals Specifications for 4-(N- ethyl-N-2-methanesulfonylaminoethyl)-2-methylphenylenediamine sesquisulfate monohydrate 1 Scope This International Standard establishes criteria for the purity of photographic-grade 4-(N-ethyl-N-2-methanesulfonyl- aminoethyl)-2-methylphenylenediamine sesquisulf
30、ate monohydrate 1)2)and specifies the test methods to be used to determine the purity. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this International Standard. For dated references, subsequent amendments
31、to, or revisions of, any of these publications do not apply. However, parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition o
32、f the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 565, Test sieves Metal wire cloth, perforated metal plate and electroformed sheet Nominal sizes of openings ISO 10349-1:1992, Photography Photographic-grade chemica
33、ls Test methods Part 1: General ISO 10349-4:1992, Photography Photographic-grade chemicals Test methods Part 4: Determination of residue after ignition ISO 10349-5:1992, Photography Photographic-grade chemicals Test methods Part 5: Determination of heavy metals and iron content ISO 10349-8:1992, Pho
34、tography Photographic-grade chemicals Test methods Part 8: Determination of volatile matter 1) Sold under such trade names as: CD-3 (Eastman Chemicals), FCD-03 (Fuji), and Color Developer 3 (Merck). 2) Other names: N-ethyl-N-(-methylsulfonamidoethyl)-3-methyl-p-phenylenediamine sesquisulfate monohyd
35、rate 4-amino-N-ethyl-N-(-methanesulfonamidoethyl)-m-toluidine sesquisulfate monohydrate 4-amino-N-(-methanesulfonamidoethyl)-3-methylaniline sesquisulfate monohydrate N-(4-amino-N-ethyl-m-toluidine)-ethylmethanesulfonamide sesquisulfate monohydrate BSISO17531:20021IS:13571 O2002(E) 2 I SO 2002 All i
36、rthgs ersedevr 3 General 3.1 Physical properties 4-(N-ethyl-N-2-methanesulfonylaminoethyl)-2-methylphenylenediamine sesquisulfate monohydrate (C 12 H 21 N 3 O 2 S . 3/2 H 2 SO 4 . H 2 O) exists in the form of white to medium-tan or light-pink coloured granules or powder. It has a relative molecular
37、mass of 436,52. 3.2 Hazardous properties 4-(N-ethyl-N-2-methanesulfonylaminoethyl)-2-methylphenylenediamine sesquisulfate monohydrate may cause skin irritation and allergic skin reaction. Also, this material is corrosive and should under no circumstances be swallowed. (DANGER: C S ) NOTE Hazard warn
38、ing codes are defined in ISO 10349-1. 3.3 Handling and storage Handle this material carefully, avoid contact with skin and avoid breathing the dust. Store in tightly sealed containers and protect from light at room temperature. 4 Requirements A summary of the requirements is shown in Table 1. Table
39、1 Summary of requirements Test Limit Subclause International Standard in which test method is given Assay Minimum: 99,0 % Maximum: 102,9 %7.1 ISO 17531 Identity test Infrared spectrum Equivalent to Figure 1 7.2 ISO 17531 Residue after ignition Maximum: 0,10 % 7.3 ISO 10349-4 Heavy metals content (as
40、 Pb) Maximum: 0,002 % 7.4 ISO 10349-5 Iron content (Fe) Maximum: 0,002 % 7.5 ISO 10349-5 Volatile matter Maximum: 0,60 % 7.6 ISO 10349-8 Appearance of solution Clear and colourless or pale pink colour and free from insoluble matter 7.7 ISO 17531 Photographic-use test To pass test7.8 ISO 17531 NOTE %
41、 equals mass fraction. BSISO17531:20022IS:13571 O2002(E) I SO 2002 All irthgs ersedevr 35 Reagents and glassware All reagents, materials and glassware shall conform to the requirements specified in ISO 10349-1, unless otherwise noted. The hazard warning symbols, used as a reminder in those steps det
42、ailing handling operations, are defined in ISO 10349-1. These symbols are used to provide information to the user and are not meant to provide conformance with hazardous labelling requirements, as these vary from country to country. 6 Sampling For details on sampling, see ISO 10349-1. 7 Test methods
43、 7.1 Assay 7.1.1 Specification Content of 4-(N-ethyl-N-2-methanesulfonylaminoethyl)-2-methylphenylenediamine sesquisulfate monohydrate shall be between 99,0 % and 102,9 %. 7.1.2 Reagents 7.1.2.1 Ammonium cerium (IV) hexanitrate, c(NH 4 ) 2 Ce(NO 3 ) 6 = 0,050 0 mol/l (27,41 g/l) Commercially availab
44、le analytical reagent solution is recommended. If the solution is to be prepared, see any quantitative analytical chemistry text. NOTE A procedure for the preparation and standardization of this solution is given in annex A. 7.1.2.2 Ferrous sulfate, c(FeSO 4 ) = 0,025 mol/l (3,80 g/l) Dissolve 4,25
45、g of FeSO 4 . H 2 O in 1 litre of water. (Alternatively 5,60 g/l of FeSO 4 . 4H 2 O, 6.05 g of FeSO 4 . 5H 2 O or 6,95 g of FeSO 4 . 7H 2 O may be used.) 7.1.2.3 Ferroin solution Dissolve 1,48 g of 1,10-phenanthroline in 100 ml of 0,025 mol/l ferrous sulfate (7.1.2.2). 7.1.2.4 Sulfuric acid, c(H 2 S
46、O 4 ) = 0,5 mol/l (DANGER: C ) NOTE This may be prepared from sulfuric acid, 1,84 g/l (DANGER: C ). 7.1.3 Apparatus 7.1.3.1 Potentiometric titrator, automatic titrator or equivalent, equipped with a 20-ml or 25-ml burette. 7.1.3.2 Indicator electrode, platinum electrode. 7.1.3.3 Reference electrode,
47、 double-junction reference electrode. 7.1.3.4 Stirring apparatus, magnetic or the equivalent. BSISO17531:20023IS:13571 O2002(E) 4 I SO 2002 All irthgs ersedevr 7.1.4 Procedure Weigh, to the nearest 0,000 1 g, a test portion of about 0,10 g into a 250-ml beaker. Add 60 ml of 0,5 mol/l sulfuric acid (
48、7.1.2.4) and dissolve the sample. While starting to titrate, add 5 drops of ferroin solution (7.1.2.3). Set the solution on a potentiometric titrator (7.1.3.1). Titrate the solution with 0,05 mol/l ammonium cerium (IV) hexanitrate (7.1.2.1). Determine the endpoint in accordance with the instruction
49、of the automatic titrator or a textbook for potentiometric titration. 7.1.5 Expression of results The assay, expressed as a percentage by mass, for 4-(N-ethyl-N-2-methanesulfonylaminoethyl)-2-methyl- phenylenediamine sesquisulfate monohydrate (C 12 H 21 N 3 O 2 S . 3/2 H 2 SO 4 . H 2 O), may be given automatically on the automatic titrator, or is given by 21 ,83 cV A m = where A is the assay, express
