1、September 2012 Translation by DIN-Sprachendienst.English price group 15No 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).
2、ICS 71.100.80!$1“1915814www.din.deDDIN EN 16037Chemicals used for treatment of water intended for humanconsumption Sodium hydrogen sulfate;English version EN 16037:2012,English translation of DIN EN 16037:2012-09Produkte zur Aufbereitung von Wasser fr den menschlichen Gebrauch Natriumhydrogensulfat;
3、Englische Fassung EN 16037:2012,Englische bersetzung von DIN EN 16037:2012-09Produits chimiques utiliss pour le traitement de leau destine la consommationhumaine Hydrognosulfate de sodium;Version anglaise EN 16037:2012,Traduction anglaise de DIN EN 16037:2012-09www.beuth.deIn case of doubt, the Germ
4、an-language original shall be considered authoritative.Document comprises 27 pages 08.12 DIN EN 16037:2012-09 2 A comma is used as the decimal marker. National foreword This standard has been prepared by Technical Committee CEN/TC 164 “Water supply” (Secretariat: AFNOR, France). The responsible Germ
5、an body involved in its preparation was the Normenausschuss Wasserwesen (Water Practice Standards Committee), Working Committee NA 119-04-02 AA Wasseraufbereitung. Users of this standard are advised of the reservations stated in the Introduction of the European Standard and should note that national
6、 regulations exist in Germany dealing with water for human consumption, in particular the Trinkwasserverordnung (TrinkwV2001) (German Drinking Water Ordinance). The DIN Standards corresponding to the International Standards referred to in this document are as follows, whereby EN ISO Standards are on
7、ly listed below if these have not been published as DIN EN ISO Standards with the same number: EN ISO 3696 DIN ISO 3696 ISO 6332 DIN 38406-1 National Annex NA (informative) Bibliography DIN ISO 3696, Water for analytical laboratory use Specification and test methods DIN 38406-1, German standard meth
8、ods for the examination of water, waste water and sludge Cations (group E) Determination of iron (E 1) Verordnung ber die Qualitt von Wasser fr den menschlichen Gebrauch (Trinkwasserverordnung TrinkwV 2001) (German Drinking Water Ordinance), as of 28 November 2011, Bundesgesetzblatt (German Federal
9、Law Gazette) Part 1 (2011), No. 61, pp. 2370 2396 ) Recorded in the DITR database of DIN Software GmbH, obtainable from Beuth Verlag GmbH, 10772 Berlin, Germany. EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 16037 July 2012 ICS 71.100.80 English Version Chemicals used for treatment of water i
10、ntended for human consumption - Sodium hydrogen sulfate Produits chimiques uitiliss pour le traitement de leau destine la consommation humaine - Hydrognosulfate de sodium Produkte zur Aufbereitung von Wasser fr den menschlichen Gebrauch - Natriumhydrogensulfat This European Standard was approved by
11、CEN on 24 May 2012. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the 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
12、may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard 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 notifie
13、d to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Icela
14、nd, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre:
15、 Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 16037:2012: EEN 16037:2012 (E) 2 Contents Page Foreword 3Introduction .31 Scope 52 Normative references 53 Description .54 Purity criteria 75 T
16、est methods 86 Labelling Transportation Storage . 14Annex A (informative) General information on sodium hydrogen sulfate . 16Annex B (normative) General rules relating to safety 18Annex C (normative) Determination of arsenic, antimony and selenium (atomic absorption spectrometry hydride technique) 1
17、9Bibliography . 25DIN EN 16037:2012-09 EN 16037:2012 (E) 3 Foreword This document (EN 16037:2012) has been prepared by Technical Committee CEN/TC 164 “Water supply”, the secretariat of which is held by AFNOR. This European Standard shall be given the status of a national standard, either by publicat
18、ion of an identical text or by endorsement, at the latest by January 2013, and conflicting national standards shall be withdrawn at the latest by January 2013. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC sha
19、ll not be held responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Den
20、mark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. DIN EN 16037:
21、2012-09 EN 16037:2012 (E) 4 Introduction In respect of potential adverse effects on the quality of water intended for human consumption, caused by the product covered by this European Standard: a) this European Standard provides no information as to whether the product may be used without restrictio
22、n 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, existing national regulations concerning the use and/or the characteristics of this product remain in force. NOTE Conformity with this European Standard does not
23、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 European Standard is subject to regulation or control by National Authorities. DIN EN 16037:2012-09 EN 16037:2012 (E) 5 1 Scope This European Standard is applic
24、able to sodium hydrogen sulfate used for treatment of water intended for human consumption. It describes the characteristics of sodium hydrogen sulfate and specifies the requirements and the corresponding test methods for sodium hydrogen sulfate. It gives information on its use in water treatment. 2
25、 Normative references The following documents, in whole 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 amendm
26、ents) applies. EN 1233, Water quality Determination of chromium Atomic absorption spectrometric methods EN 1483, Water quality Determination of mercury Method using atomic absorption spectrometry EN ISO 3696, Water for analytical laboratory use Specification and test methods (ISO 3696) ISO 2479, Sod
27、ium chloride for industrial use Determination of matter insoluble in water or in acid and preparation of principal solutions for other determinations ISO 2483, Sodium chloride for industrial use Determination of the loss of mass at 110 degrees C ISO 3165, Sampling of chemical products for industrial
28、 use Safety in sampling ISO 6206, Chemical products for industrial use Sampling Vocabulary ISO 6332, Water quality Determination of iron Spectrometric method using 1,10-phenanthroline ISO 8213, Chemical products for industrial use Sampling techniques Solid chemical products in the form of particles
29、varying from powders to coarse lumps ISO 8288, Water quality Determination of cobalt, nickel, copper, zinc, cadmium and lead Flame atomic absorption spectrometric methods 3 Description 3.1 Identification 3.1.1 Chemical name Sodium hydrogen sulfate. 3.1.2 Synonym or common name Sodium bisulfate. 3.1.
30、3 Relative molecular mass 120,06 g/mol. DIN EN 16037:2012-09 EN 16037:2012 (E) 6 3.1.4 Empirical formula NaHSO4. 3.1.5 CAS-Registry-Number1)7681-38-1. 3.1.6 EINECS-Number2)231-665-7. 3.2 Commercial form Powder or beads, free flowing. 3.3 Physical properties 3.3.1 Appearance and odour White to slight
31、ly yellow, odourless. 3.3.2 Density The bulk density of the product is approximately between 1 400 kg/m3and 1 450 kg/m3. 3.3.3 Solubility in water Approximately 1 080 g/l at 25 C. 3.3.4 Vapour pressure Not applicable. 3.3.5 Boiling point Not applicable. 3.3.6 Melting point at 100 kPa3)Approximately
32、180 C. Note 1 to entry: The product decomposes at higher temperatures to sodium disulfate and water. 3.3.7 Specific heat Not applicable. 3.3.8 Viscosity (dynamic) Not applicable. 1) Chemical Abtracts Service Registry Number. 2) European Inventory of Existing Commercial Chemical Substances. 3) 100 kP
33、a = 1 bar. DIN EN 16037:2012-09 EN 16037:2012 (E) 7 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 Sodium hydrogen sulfate is hygroscopic. Aqueous solutions of the product exhibit a acid reaction an
34、d are corrosive to metals: acid constant pKS= 1,99 a solution with a mass fraction of 20 % has a pH value between 1 and 1,2 at 25 C. 4 Purity criteria 4.1 General This European Standard specifies the minimum purity requirements for sodium hydrogen sulfate used for the treatment of water intended for
35、 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 the user and when necessary to the relevant authorities. NOTE Users of this product s
36、hould 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 impurities and additives used in the product not stated in the product standar
37、d. Limits have been given for impurities and chemicals 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 materials leads to significant quantities of impurities, by-products or additives b
38、eing present, this shall be notified to the user. 4.2 Composition of commercial product The commercial product shall contain a mass fraction of sodium hydrogen sulfate greater than 95,2 %. 4.3 Impurities and by-products The content of impurities and by-products shall be in accordance with Table 1. D
39、IN EN 16037:2012-09 EN 16037:2012 (E) 8 Table 1 Impurities and by-products Parameter Limit in % (mass fraction) Sodium sulfate max. 4,8 Water max. 0,8Water insoluble substances max. 0,05 Iron max. 0,014.4 Chemical Parameters The product shall conform to the requirements specified in Table 2. Table 2
40、 Chemical parameters Parameter Limit in mg/kg NaHSO4Arsenic (As) max. 0,1 Cadmium (Cd) max. 0,1 Chromium (Cr) max. 1 Mercury (Hg) max. 0,1 Nickel (Ni) max. 1 Lead (Pb) max. 1 Antimony (Sb) max. 1 Selenium (Se) max. 1 NOTE Pesticides, polycyclic aromatic hydrocarbons and halogenated organic substance
41、s are not by-products of the manufacturing process. For parametric values on chemical parameters content in drinking water, see 1. 5 Test methods 5.1 Sampling Prepare the laboratory sample(s) required by the relevant procedure described in ISO 8213. Observe the general recommendations of ISO 3165 an
42、d take account of ISO 6206. 5.2 Analysis 5.2.1 Determination of sodium hydrogen sulfate 5.2.1.1 Principle Alkalimetric titration with sodium hydroxide solution. 5.2.1.2 Reagents 5.2.1.2.1 All reagents shall be of a recognized analytical grade. De-ionized water (conforming to grade 3 of EN ISO 3696)
43、is sufficient. 5.2.1.2.2 Sodium hydoxide solution, c(NaOH) = 0,1 mol/l DIN EN 16037:2012-09 EN 16037:2012 (E) 9 5.2.1.3 Apparatus Ordinary laboratory apparatus and glassware together with the following. 5.2.1.3.1 Potentiometric titrimeter 5.2.1.3.2 Automatic burette, volume 50 ml, equipped with an i
44、njection tip. 5.2.1.3.3 Electromechanical stirrer 5.2.1.3.4 Glass beaker, capacity 250 ml 5.2.1.4 Procedure 5.2.1.4.1 Test solution Weigh, to the nearest 0,1 mg, a test portion of approximately 0,2 g into a dry, clean beaker (5.2.1.3.4). 5.2.1.4.2 Determination Input the calculation data in the titr
45、ation microprocessor in accordance with the instruction manual. Place the pH electrode in the titration beaker and titrate with the sodium hydroxide solution (5.2.1.2.2). Record the titration curve and determine the inflection point as the equivalent point of the potentiometric titration. 5.2.1.5 Ex
46、pression of results The sodium hydrogen sulfate content, C1, expressed as a percentage by mass, is given by the following formula (1): mcVC1201= (1) where V is the volume, expressed in millilitres, of the sodium hydroxide solution (5.2.1.2.2) used for the titration; c is the concentration, in moles
47、per litre, of the sodium hydroxide solution (5.2.1.2.2); m is the mass of the test portion, expressed in grams. 120 is the mass equivalent of sodium hydrogen sulfate in grams corresponding to 1 000 ml of sodium hydroxide solution with c(NaOH) = 0,1 mol/l. 5.2.1.6 Repeatability limit The absolute dif
48、ference between two single test results, obtained under repeatability conditions, shall not be greater than the repeatability value, r, as calculated from the following formula: r = 0,001 z where DIN EN 16037:2012-09 EN 16037:2012 (E) 10 z is the mean of the two results, expressed in mass fraction %. NOTE Repeatibility conditions are conditions where mutually independent test results are obtained with the same method on identical test ma
