1、September 2016 English price group 16No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 71.100.80This standard has bee
2、n included in the body of DVGW Technical Rules.!%0J“2561339www.din.deDIN EN 939Chemicals used for treatment of water intended for human consumption Hydrochloric acid;English version EN 939:2016,English translation of DIN EN 939:2016-09Produkte zur Aufbereitung von Wasser fr den menschlichen Gebrauch
3、 Salzsure;Englische Fassung EN 939:2016,Englische bersetzung von DIN EN 939:2016-09Produits chimiques utiliss pour le traitement de leau destine la consommation humaine Acide chlorhydrique;Version anglaise EN 939:2016,Traduction anglaise de DIN EN 939:2016-09SupersedesDIN EN 939:2010-01www.beuth.deD
4、ocument comprises 33 pagesDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritative.08.16 DIN EN 939:2016-09 2 A comma is used as the decimal marker. National foreword This document (EN 939:2016) has been prepared by Technical Committee CEN/T
5、C 164 “Water supply” (Secretariat: AFNOR, France). The responsible German body involved in its preparation was DIN-Normenausschuss Wasserwesen (DIN Standards Committee Water Practice), DIN-DVGW Joint Working Committee NA 119-07-13 AA Aufbereitungsstoffe und -anlagen. Users of this standard are advis
6、ed of the reservations stated in the Introduction of the European Standard and should note that national regulations exist in Germany dealing with water for human consumption, in particular the Trinkwasserverordnung (TrinkwV 2001) (German Drinking Water Ordinance). The DIN Standards corresponding to
7、 the International Standards referred to in this document are as follows, whereby EN ISO Standards are only listed below if these have not been published as DIN EN ISO Standards with the same number: EN ISO 3696 DIN ISO 3696 ISO 9174 DIN EN 1233 Amendments This standard differs from DIN EN 939:2010-
8、01 as follows: a) specifications concerning hazard and safety related symbols have been brought in line with the Globally Harmonized System of Classification, Labelling and Packaging of Chemicals (GHS); b) normative references and the Bibliography have been updated. Previous editions DIN 19610: 1958
9、-07, 1975-11 DIN EN 939: 2000-04, 2009-04, 2010-01 DIN EN 939:2016-09 3 National Annex NA (informative) Bibliography DIN EN 1233, Water quality Determination of chromium Atomic absorption spectrometric methods DIN ISO 3696, Water for analytical laboratory use Specification and test methods Verordnun
10、g ber die Qualitt von Wasser fr den menschlichen Gebrauch (Trinkwasserverordnung TrinkwV 2001) (German Drinking Water Ordinance), as of 10 March 2016 (BGBI. I, p. 459)*)*)Obtainable from: Bundesministerium der Justiz (German Federal Ministry of Justice) (Internet: http:/www.gesetze-im-internet.de).
11、DIN EN 939:2016-09 4 This page is intentionally blank EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 939 May 2016 ICS 71.100.80 Supersedes EN 939:2009English Version Chemicals used for treatment of water intended for human consumption - Hydrochloric acid Produits chimiques utiliss pour le trai
12、tement de leau destine la consommation humaine - Acide chlorhydrique Produkte zur Aufbereitung von Wasser fr den menschlichen Gebrauch - Salzsure This European Standard was approved by CEN on 18 March 2016. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the
13、 conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard
14、exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national
15、 standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovaki
16、a, Slovenia, Spain, Sweden, Switzerland, Turkey andUnited Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CEN All rights of exploitation in any form and by any means re
17、served worldwide for CEN national Members. Ref. No. EN 939:2016 EEN 939:2016 (E) 2 Contents Page European foreword . 4 Introduction 5 1 Scope 6 2 Normative references 6 3 Description 6 3.1 Identification 6 3.1.1 Chemical name . 6 3.1.2 Synonym or common names . 6 3.1.3 Relative molecular mass . 6 3.
18、1.4 Empirical formula . 6 3.1.5 Chemical formula 6 3.1.6 CAS Registry Number). 7 3.1.7 EINECS reference). 7 3.2 Commercial forms . 7 3.3 Physical properties . 7 3.3.1 Appearance 7 3.3.2 Density 7 3.3.3 Solubility 7 3.3.4 Vapour pressure 7 3.3.5 Boiling point at 100 kPa . 7 3.3.6 Melting or freezing
19、point 8 3.3.7 Specific heat 8 3.3.8 Viscosity (dynamic) 8 3.3.9 Critical temperature 8 3.3.10 Critical pressure 8 3.3.11 Physical hardness . 8 3.4 Chemical properties . 8 4 Purity criteria . 8 4.1 General 8 4.2 Composition of commercial product 8 4.3 Impurities and main by-products . 9 4.4 Chemical
20、parameters . 9 5 Test methods 9 5.1 Sampling . 9 5.2 Analysis . 9 5.2.1 Determination of hydrochloric acid content (main product) . 9 5.2.2 Impurities . 10 5.2.3 Chemical parameters 14 6 Labelling Transportation Storage 16 6.1 Means of delivery . 16 6.2 Labelling according to the EU legislation)16 6
21、.3 Transportation regulations and labelling . 18 6.4 Marking 18 6.5 Storage . 18 DIN EN 939:2016-09EN 939:2016 (E) 3 6.5.1 Containers . 18 6.5.2 Long term stability . 18 6.5.3 Storage incompatibilities . 18 Annex A (informative) General information on hydrochloric acid . 19 A.1 Origin 19 A.1.1 Raw m
22、aterials 19 A.1.2 Manufacturing process . 19 A.2 Use 19 A.2.1 Function . 19 A.2.2 Form in which it is used 19 A.2.3 Treatment dose . 19 A.2.4 Mean of application 19 A.2.5 Secondary effects 19 A.2.6 Removal of excess product 20 A.3 Routine analyses . 20 Annex B (normative) General rules relating to s
23、afety 21 B.1 Rules for safe handling and use . 21 B.2 Emergency procedures . 21 B.2.1 First aid 21 B.2.2 Spillage . 21 B.2.3 Fire . 21 Annex C (normative) Determination of arsenic, antimony and selenium (atomic absorption spectrometry hydride technique) 22 C.1 Safety precautions 22 C.2 General princ
24、iple 22 C.3 Interferences 22 C.4 Reagents . 22 C.5 Apparatus 24 C.6 Procedure 26 C.6.1 Preparation of the apparatus . 26 C.6.2 Preparation of calibration solutions . 27 C.6.3 Preparation of test solutions and standard solutions . 27 C.6.4 Determination of arsenic with sodium borohydride . 27 C.6.5 D
25、etermination of selenium with sodium borohydride . 27 C.6.6 Determination of antimony with sodium borohydride 28 C.7 Calculation. 28 Bibliography . 29 DIN EN 939:2016-09EN 939:2016 (E) 4 European foreword This document (EN 939:2016) has been prepared by Technical Committee CEN/TC 164 “Water supply”,
26、 the secretariat of which is held by AFNOR. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by November 2016, and conflicting national standards shall be withdrawn at the latest by November 2016. Att
27、ention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 939:2009. Significant technical differences between this edit
28、ion and EN 939:2009 are as follows: a) deletion of reference to EU Directive 67/548/EEC of June 27, 1967 in order to take into account the latest Regulation in force (see 2); b) use of the changed classification and labelling (see 2). According to the CEN/CENELEC Internal Regulations, the national s
29、tandards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania
30、, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. DIN EN 939:2016-09EN 939:2016 (E) 5 Introduction In respect of potential adverse effects on the quality of water intended for human consumption, caused
31、by the product covered by this European Standard: a) this European Standard provides no information as to whether the product may be used without restriction in any of the Member States of the EU or EFTA; b) it should be noted that, while awaiting the adoption of verifiable European criteria, existi
32、ng national regulations concerning the use and/or the characteristics of this product remain in force. NOTE Conformity with this European Standard does not confer or imply acceptance or approval of the product in any of the Member States of the EU or EFTA. The use of the product covered by this Euro
33、pean Standard is subject to regulation or control by National Authorities. DIN EN 939:2016-09EN 939:2016 (E) 6 1 Scope This European Standard is applicable to hydrochloric acid used for treatment of water intended for human consumption. It describes the characteristics of hydrochloric acid and speci
34、fies the requirements and the corresponding test methods for hydrochloric acid. It gives information on its use in water treatment (see Annex A). It also determines the rules relating to safe handling and use of hydrochloric acid (see Annex B). 2 Normative references The following documents, in whol
35、e or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN ISO 3696, Water for analytical labor
36、atory use Specification and test methods (ISO 3696) EN ISO 12846, Water quality Determination of mercury Method using atomic absorption spectrometry (AAS) with and without enrichment (ISO 12846) ISO 904, Hydrochloric acid for industrial use Determination of total acidity Titrimetric method ISO 3165,
37、 Sampling of chemical products for industrial use Safety in sampling ISO 6206, Chemical products for industrial use Sampling Vocabulary ISO 6685, Chemical products for industrial use General method for determination of iron content 1,10-Phenanthroline spectrophotometric method ISO 8288, Water qualit
38、y Determination of cobalt, nickel, copper, zinc, cadmium and lead Flame atomic absorption spectrometric methods ISO 9174, Water quality Determination of chromium Atomic absorption spectrometric methods 3 Description 3.1 Identification 3.1.1 Chemical name Hydrochloric acid. 3.1.2 Synonym or common na
39、mes Muriatic acid, hydrogen chloride. 3.1.3 Relative molecular mass 36,46. 3.1.4 Empirical formula HCl. 3.1.5 Chemical formula HCl. DIN EN 939:2016-09EN 939:2016 (E) 7 3.1.6 CAS Registry Number1)7647-01-0. 3.1.7 EINECS reference2)231-595-7. 3.2 Commercial forms The product is supplied as aqueous sol
40、utions of hydrochloric acid with mass fraction of 25 % to 38 % (concentrated acid). Dilutions of these solutions are also available. 3.3 Physical properties 3.3.1 Appearance The solution is colourless to yellow and slightly fuming to strongly fuming, depending on concentration. 3.3.2 Density The den
41、sity is between 1,135 g/ml and 1,185 g/ml at 20 C, depending on concentration. 3.3.3 Solubility The product is miscible with water in any proportion. 3.3.4 Vapour pressure The vapour pressure for HCl at mass fraction 30 % depending on temperature is given in Table 1. Table 1 Vapour pressure of hydro
42、chloric acid solutions Temperature ptotal pHCl pH2O C kPa kPa kPa 20 2,13 1,41 0,72 50 13,73 9,46 4,27 3.3.5 Boiling point at 100 kPa The boiling point of HCl depending on concentration is given in Table 2. Table 2 Boiling point of hydrochloric acid solutions Concentration Boiling point at 100 kPa a
43、Mass fraction in % C 25 104 30 90 38 50,5 a100 kPa = 1 bar. 1) Chemical Abstracts Service Registry Number. 2) European Inventory of Existing Commercial Chemical Substances. DIN EN 939:2016-09EN 939:2016 (E) 8 3.3.6 Melting or freezing point The melting or freezing point of HCl depending on concentra
44、tion is given in Table 3. Table 3 Melting or freezing point Concentration Melting or freezing point Mass fraction in % C 38 27 25 75 3.3.7 Specific heat 3,14 kJ/(kg K) at 18 C for HCl at mass fraction 16,83 %. 3.3.8 Viscosity (dynamic) The viscosity of a HCl at mass fraction 30 %, solution at 15 C,
45、is 1,9 mPa.s. 3.3.9 Critical temperature Not applicable. 3.3.10 Critical pressure Not applicable. 3.3.11 Physical hardness Not applicable. 3.4 Chemical properties The solution of hydrochloric acid is a strong mineral acid. 4 Purity criteria 4.1 General This European Standard specifies the minimum pu
46、rity requirements for hydrochloric acid used for the treatment of water intended for human consumption. Limits are given for impurities commonly present in the product. Depending on the raw material and the manufacturing process other impurities may be present and, if so, this shall be notified to t
47、he user and when necessary to relevant authorities. Users of this product should check the national regulations in order to clarify whether it is of appropriate purity for treatment of water intended for human consumption, taking into account raw water quality, required dosage, contents of other imp
48、urities and additives used in the product not stated in this product standard. Limits have been given for impurities and chemical parameters where these are likely to be present in significant quantities from the current production process and raw materials. If the production process or raw material
49、s leads to significant quantities of impurities, by-products or additives being present, this shall be notified to the user. 4.2 Composition of commercial product As concentrated acid the concentration of HCl solution shall be at least at mass fraction of 25 %. More diluted solutions are commercially available; the concentration of hydrochloric acid shall be equal to or greater than the manufacturer specified valu
