1、INTERNATIONAL STANDARD ISO 10349-9 First edition 19924 2-l 5 Photography - Photographit-grade chemicals - Test methods - Part 9: Reaction to ammoniacal silver nitrate Photographie - Produits chimiques de qualitk photographique - Methodes dessai - Partie 9: R6action au nitra te dargen t ammoniacal Re
2、ference number ISO 10349-9:1992(E) ISO 10349=9:1992(E) 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 normally carried out through ISO technical committees.
3、 Esch 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 work. ISO collaborates closely with the Interna
4、tional Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. 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 bod
5、ies casting a vote. International Standard ISO 10349-9 was prepared by Technical Committee lSO/TC 42, Photography. ISO 10349 consists of the following Parts, under the general title Pho- tography - Photographit-grade chemicals - Test methods: - Part 1: General - Part 2: Determination of matter insol
6、uble in wa ter - Part 3: Determination of matter insoluble in ammonium hydroxide Solution - Part 4: Determination of residue after ignition - Part 5: Determination of heavy metals and iron content - Part 6: De fermination of halide tonten t - Part 7: Determination of alkalinity or acidity - Part 8:
7、Determination of vola tile matter - Part 9: Reaction to ammoniacal silver nitrate - Part 10: Determination of sulfide con tent 0 ISO 1992 All rights reserved. No part. of this publication may be reproduced or utilized in any form or by any means, electronie or mechanical, including photocopying and
8、microfilm, without per- mission in writing from the publisher. International Organization for Standardization Case Postale 56 l CH-l 211 Geneve 20 l Switzerland Printed in Switzerland ii ISO 10349=9:1992(E) - Part 11: Determination of specific gravity - Part 12: Determination of density This page in
9、tentionally left blank INTERNATIONAL STANDARD ISO 10349=9:1992(E) Photography - Photographit-grade chemicals - Test methods - Part 9: Reaction to ammoniacal silver nitrate 1 Scope This part of ISO 10349 specifies a general test method for the determination of the reaction to am- moniacal silver nitr
10、ate, for photographit-grade chemi- cals. 2 Normative refere The following Standard contains provisions which, through reference in this text, constitute provisions of this part of ISO 10349. At the time of publication, the edition indicated was valid. All Standards are sub- ject to revision, and Par
11、ties to agreements based on this part of ISO 10349 are encouraged to investigate the possibility of applying the most recent edition of the Standard indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO 10349-1: 1992, Photography - Photographic- g
12、rade chemicals - Test methods - Part 7: General. 3 Hazards See ISO 10349-1 for general hazard warnings and for details of the hazard code System used in this part of ISO 10349. 4 Reagents See ISO 10349-1 for general requirements. 4.l Ammonium hydroxide solutioa, NH,OH, P zz 0,91 g/ml (DANGER: ). 4.2
13、 mmoniacai siBwer witrate Thoroughly mix equal voiumes of silver nitrate sol- ution (100 g/ljl and (4.7) ( ). ammonium hydroxide Solution ” See ISO 10349-1 for ire requ ments for glassvvare. Ei”8 Two matehed essler colour-comparison cylinders, each with a capacity of 50 ml. 6 Sampling See ISO 10349-
14、1. 7 Procedure Weigh a test Portion of 2,O g k OJ g and dissolve it in 40 mI of water. Transfer 20 ml of this Solution to each of the two Nessler colour-comparison cylinders (5.1). Prepare a test Solution by adding 10 ml of freshly prepared ammoniacal silver nitrate Solution 1) This tan be prepared
15、from silver nitrate (DANGER: ) ISO 10349=9:1992(E) (4.2) to one of the Nessler colour-comparison cylin- ders and mix weil. Prepare a blank Solution by adding 5 ml of the ammonium hydroxide Solution (4.1) and 5 ml of water to the other Nessler colour-comparison cylinder and mix weil. Allow the soluti
16、ons to stand for 2 min. Compare the colour and turbidity of the two solutions. Any colour or turbidity produced in the test Solution shall not exceed that produced in the blank solution. WARNING - After completing the test, imme- diately dispose of the test solution and excess re- agent to prevent p
17、ossible formation of explosive compounds (feather powder or silver azide). 8 Test report The test report shall specify the method used and the test result obtained. lt shall also mention all operating details not specified in this part of ISO 10349, or regarded as optional, to- gether with details o
18、f any incidents which may have influenced the test result. The test report shall include all information necessary for the complete identification of the Sample. 2 This page intentionally left blank ISO 10349=9:1992(E) UDC 771.7i543.721 Descriptors: photography, nitrates, comparison analysi photographic materials, photographic chemicals, tests, Chemical analysis, Chemical reactivity, silver Price based on 2 pages
