SIST EN ISO 9455-9:2001

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Flußmittel zum Weichlöten - Prüfverfahren - Teil 9: Bestimmung des Ammoniumgehaltes (ISO 9455-9:1993)Flux de brasage tendre - Méthodes d'essai - Partie 9: Dosage de l'ammoniac (ISO 9455-9:1993)Soft soldering fluxes - Test methods - Part 9: Determination of ammonia content (ISO 9455-9:1993)25.160.50Trdo in mehko lotanjeBrazing and solderingICS:Ta slovenski standard je istoveten z:EN ISO 9455-9:1995SIST EN ISO 9455-9:2001en01-februar-2001SIST EN ISO 9455-9:2001SLOVENSKI
STANDARD



SIST EN ISO 9455-9:2001



SIST EN ISO 9455-9:2001



SIST EN ISO 9455-9:2001



SIST EN ISO 9455-9:2001



SIST EN ISO 9455-9:2001



INTERNATIONAL STANDARD IS0 9455-9 First edition 1993-04-I 5 Soft soldering fluxes - Test methods - Part 9: Determination of ammonia content Flux de brasage tendre - M&hodes d’essai - Partie 9: Dosage de /‘ammoniac Reference number IS0 9455-9:1993(E) SIST EN ISO 9455-9:2001



IS0 9455-9: 1993(E) Foreword IS0 (the International Organization for Standardization) is a worldwide federation of national standards bodies (IS0 member bodies). The work of preparing International Standards is normally carried out through IS0 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 work. IS0 collaborates closely with the International 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 bodies casting a vote. International Standard IS0 9455-9 was prepared by Technical Committee ISO/TC 44, Welding and allied processes, Sub-Committee SC 12, Soldering and brazing materials. IS0 9455 consists of the following parts, under the general title Soft soldering fluxes - Test methods: - Part I: Determination of non-volatile matter, gravimetric method - Part 2: Determjna tion of non-volatile matter, ebulliometric method - Part 3: Determination of acid value, potentiometric and visual titration methods - Part 5: Copper mirror test - Part 6: Determination of halide content - Part 8: De termination of zinc con tent - Part 9: Determination of ammonia content - Part IO: Flux efficacy tests, solder spread method - Part 11: Solubility of flux residues 0 IS0 1993 All rights reserved. No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without per- mission in writing from the publisher. International Organization for Standardization Case Postale 56 l CH-1211 Geneve 20 l Switzerland Printed in Switzerland ii SIST EN ISO 9455-9:2001



IS0 9455-9: 1993(E) - Part 12: Steel tube corrosion test - Part 13: Determination of flux spattering - Part 14: Assessment of tackiness of flux residues - Part 15: Copper corrosion test - Part 16: Flux efficacy tests, wetting balance method [Technical Report] - Part 17: Determination of surface insulation resistance of flux resi- dues (Comb test) - Part 18: Electrochemical migration test for flux residues SIST EN ISO 9455-9:2001



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INTERNATIONAL STANDARD IS0 9455-9: 1993(E) Soft soldering fluxes - Test methods - Part 9: Determination of ammonia content 1 Scope This part of IS0 9455 specifies a distillation method for the determination of the ammonia content of solid, paste or liquid fluxes. The method is applicable to fluxes of class 3.1.1 only, as defined in IS0 9454-l. 2 Normative reference The following standard contains provisions which, through reference in this text, constitute provisions of this part of IS0 9455. At the time of publication, the edition indicated was valid. All standards are subject to revision, and parties to agreements based on this part of IS0 9455 are encouraged to investigate the possibility of applying the most recent edition of the standard indicated below. Members of IEC and IS0 maintain registers of currently valid International Standards. IS0 9454-l :I 990, Soft soldering fluxes - Classi- fica tion and requirements - Part 7: Classification, labelling and packaging. 3 Principle The prepared flux solution is distilled with sodium hy- droxide to expel the ammonia present in the flux. The resulting distillate is passed into a standard sulfuric acid solution. The excess acid is then titrated with sodium hydroxide solution and the ammonia content of the flux is calculated. 4 Reagents 4.1 General Use only reagents of recognized analytical quality and only distilled, or deionized, water. 4.2 Sodium hydroxide solution, 1,O mol/l standard solution, commercially available. Alternatively, use an approximately I,0 mol/l solution of sodium hydroxide, prepared by the following method. Dissolve 40 g of sodium hydroxide in water and cool. Transfer the solution to a 1 litre volumetric flask, dilute to the mark and mix well. Standardize this solution with 0,5 mol/l sulfuric acid solution (4.3). 4.3 Sulfuric acid, 0,5 mol/l, standard solution, com- mercially available. Alternatively, use
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