1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 16038:2012Chemicals used for treatmentof water for swimming pools Sodium hydrogen sulfateBS EN 16038:2012 BRITISH STANDARDNational forewordThis British Standard is the UK i
2、mplementation of EN 16038:2012.The UK participation in its preparation was entrusted to TechnicalCommittee CII/59, Chemicals for drinking water treatment.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all
3、the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2012. Published by BSI StandardsLimited 2012ISBN 978 0 580 69595 7ICS 71.100.80Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Stand
4、ard was published under the authority of theStandards Policy and Strategy Committee on 31 August 2012.Amendments issued since publicationDate Text affectedBS EN 16038:2012EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 16038 July 2012 ICS 71.100.80 English Version Chemicals used for treatment o
5、f water for swimming pools - Sodium hydrogen sulfate Produits chimiques utiliss pour le traitement de leau des piscines - Hydrognosulfate de sodium Produkte zur Aufbereitung von Schwimm- und Badebeckenwasser - Natriumhydrogensulfat This European Standard was approved by CEN on 24 May 2012. CEN membe
6、rs 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 may be obtained on applicatio
7、n 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 notified to the CEN-CENELEC Manageme
8、nt 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, Iceland, Ireland, Italy, Latvia, L
9、ithuania, 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: Avenue Marnix 17, B-1000 Bru
10、ssels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 16038:2012: EBS EN 16038:2012EN 16038:2012 (E) 2 Contents Page Foreword 3Introduction .41 Scope 52 Normative references 53 Description .54 Purity criteria 75 Test methods 8
11、6 Labelling Transportation Storage 8Annex A (informative) General information on sodium hydrogen sulfate . 11Annex B (normative) General rules relating to safety 12Bibliography . 13BS EN 16038:2012EN 16038:2012 (E) 3 Foreword This document (EN 16038:2012) has been prepared by Technical Committee CEN
12、/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 publication of an identical text or by endorsement, at the latest by January 2013, and conflicting national standards shall be withdrawn at the latest
13、 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 shall not be held responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national stan
14、dards organisations 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, L
15、uxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 16038:2012EN 16038:2012 (E) 4 Introduction In respect of potential adverse effects on the quality of water for swimming pools, caused by the product
16、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, existing national reg
17、ulations 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 European Standard i
18、s subject to regulation or control by National Authorities. BS EN 16038:2012EN 16038:2012 (E) 5 1 Scope This European Standard is applicable to sodium hydrogen sulfate used for treatment of swimming pool water. It describes the characteristics of sodium hydrogen sulfate and specifies the requirement
19、s and the corresponding test methods for sodium hydrogen sulfate. It gives information on its use in water treatment for swimming pools. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dat
20、ed references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 16037, Chemicals used for treatment of water intended for human consumption Sodium hydrogen sulfate. 3 Description 3.1 Identification 3.1.1 Chem
21、ical name Sodium hydrogen sulfate. 3.1.2 Synonym or common name Sodium bisulfate. 3.1.3 Relative molecular mass 120,06 g/mol. 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. 1) Chemical Abtracts
22、Service Registry Number. 2) European Inventory of Existing Commercial Chemical Substances. BS EN 16038:2012EN 16038:2012 (E) 6 3.3 Physical properties 3.3.1 Appearance and odour White to slightly yellow, odourless. 3.3.2 Density The bulk density of the product is approximately between 1 400 kg/m3and
23、 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 180 C. Note 1 to entry: The product decomposes at higher temperatures to sodium disulfate and water. 3.3.7
24、Specific heat Not applicable. 3.3.8 Viscosity (dynamic) Not applicable. 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. 3) 100 kPa = 1 bar. BS EN 16038:2012EN
25、16038:2012 (E) 7 Aqueous solutions of the product exhibit an acid reaction and 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 require
26、ments for sodium hydrogen sulfate used for the treatment of water for swimming pools. 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 n
27、ecessary to the 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 for swimming pools, taking into account raw water quality, required dosage, contents of other impurities and additives used
28、 in the product not stated in the product standard. 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 qua
29、ntities of impurities, by-products or additives being 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 92 %. 4.3 Impurities and by-products The content of impurities and by-
30、products shall be in accordance with Table 1. Table 1 Impurities and by-products Parameter Limit in % (mass fraction) Sodium Sulfate max. 8 Water max. 0,8Water insoluble substances max. 0,05 Iron max. 0,01BS EN 16038:2012EN 16038:2012 (E) 8 4.4 Chemical Parameters The product shall conform to the re
31、quirements specified in Table 2. Table 2 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 hydroc
32、arbons and halogenated organic substances are not by-products of the manufacturing process. 5 Test methods The sampling and the analytical methods are those described in EN 16037. 6 Labelling Transportation Storage 6.1 Means of delivery Sodium hydrogen sulfate shall be delivered in polyethylene bags
33、, with net contents of 1 kg to 25 kg, or in flexible bulk containers, with net contents of a maximum of 1 000 kg. In order that the purity of the product is not affected, the means of delivery shall not have been used previously for any different product or it shall have been specially cleaned and p
34、repared before use. 6.2 Labelling according to the EU legislation4)At the date of publication of this standard, the following labelling requirements shall apply to sodium hydrogen sulfate: 4) See 1. BS EN 16038:2012EN 16038:2012 (E) 9 Hazard pictogram Figure 1 GHS05 Signal word : Danger Hazard state
35、ment H318: Causes serious eye damage NOTE Precautionary statements (P statements) should be provided by the company being responsible for the marketing of the substance. They should be indicated on the packaging label and in the extended safety data sheet (eSDS) of the substance. NOTE The regulation
36、 1, and its amendments for the purposes of its adaptation to technical and scientific progress contains a list of substances classified by the EU. Substances not listed in this regulation should be classified on the basis of their intrinsic properties according to the criteria in the regulation by t
37、he person responsible for the marketing of the substance. 6.3 Transportation regulations and labelling At the date of publication of this standard, Sodium hydrogen sulfate is not listed as UN Number5)and not classified by the manufacturers as a dangerous good according to the transport regulations R
38、ID6), ADR7), IMDG8)and IATA9). 6.4 Marking The marking shall include the following: the name: “sodium hydrogen sulfate” and trade name; the net mass; the name and address of supplier and/or manufacturer; the statement “This product conforms to EN 16038”. 5) United Nations Number. 6) Regulations conc
39、erning the International Carriage of Dangerous Goods by Rail. 7) European Agreement concerning the International Carriage of Dangerous Goods by Road. 8) International Maritime Transport of Dangerous Goods Code. 9) International Air Transport Association. Dangerous Goods Regulations. BS EN 16038:2012
40、EN 16038:2012 (E) 10 6.5 Storage 6.5.1 General Store the product in original packages or in tightly closed plastic containers in a cool and dry place. Do not use containers made of common construction metals (mild steel, stainless steel, zinc coated steel, etc.). Keep away from any sources of heat (
41、avoid heat of 60 C to prevent agglomeration) or incompatible materials. 6.5.2 Long term stability Stable when stored under conditions described in 6.5.1. 6.5.3 Storage incompatibilities Avoid contact with alkaline substances (intense reaction). Avoid contact with common construction metals (corrosio
42、n, release of highly flammable hydrogen gas). Avoid mixtures with hypochlorites and other compounds containing active chlorine (intense reaction, release of toxic chlorine gas). BS EN 16038:2012EN 16038:2012 (E) 11 Annex A (informative) General information on sodium hydrogen sulfate A.1 Origin A.1.1
43、 Raw materials Sodium hydrogen sulfate is usually manufactured from sulfuric acid and sodium chloride. It can be made from sulfuric acid and sodium sulfate, or from sulfuric acid and sodium hydroxide or from sulfuric acid and sodium carbonate. A.1.2 Manufacturing process The usual manufacturing proc
44、ess is the reaction of solid sodium chloride (salt) or sodium sulfate with equivalent amounts of concentrated sulfuric acid under heating according to the reaction formulae: H2SO4+ NaCl NaHSO4+ HCl (A.1) H2SO4+ Na2SO4 2 NaHSO4(A.2) A.2 Use A.2.1 Function It is used for adjustment of pH value. A.2.2
45、Form in which it is used The product is usually used as delivered, but it could also be used as an aqueous solution. A.2.3 Treatment dose The treatment dose depends of the pool water quality and the desired pH. A.2.4 Means of application The solid product is directly added into the pool water. The a
46、queous solution of the product is usually applied using a metering pump. A.2.5 Secondary effects Not applicable. A.2.6 Removal of excess product Addition of alkaline agents (e.g. calcium carbonate) is used to neutralize the excess acidity. BS EN 16038:2012EN 16038:2012 (E) 12 Annex B (normative) Gen
47、eral rules relating to safety B.1 Rules for safe handling and use The supplier shall provide current safety instructions. B.2 Emergency procedures B.2.1 First aid Skin: wash thoroughly with plenty of water and soap. Eyes: rinse immediately and thoroughly with plenty of water for at least 15 min and
48、seek medical advice. Inhalation: remove person to fresh air, if breathing is difficult seek medical help immediately. Ingestion: give plenty of water to drink. Do not induce vomiting. Seek medical advice. B.2.2 Spillage Sweep up and collect in plastics containers (no metallic containers). Observe lo
49、cal waste disposal regulations. Rinse residues away with plenty of water. Clean contaminated tools with plenty of water. B.2.3 Fire Product itself does not burn. Cool endangered containers with water spray jet. Adapt extinguishing measure to the surrounding fire as foam, carbon dioxide, dry powder. Do not use water. BS EN 16038:2012EN 16038:2012 (E) 13 Bibliography 1 Regulation (EC) No 1272/2008 of the European Parliament and of the Council of 16 December 2008 on classification, labell
