1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 16004:2011Chemicals used for treatmentof water intended for humanconsumption MagnesiumoxideBS EN 16004:2011 BRITISH STANDARDNational forewordThis British Standard is the UK
2、 implementation of EN 16004:2011. 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 be obtained on request to its secretary.This publication does not purport to include
3、all the necessary provisions of a contract. Users are responsible for its correct application. BSI 2011 ISBN 978 0 580 68718 1 ICS 13.060.20; 71.100.80 Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Stan
4、dards Policy and Strategy Committee on 31 December 2011.Amendments issued since publicationDate T e x t a f f e c t e dBS EN 16004:2011EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 16004 November 2011 ICS 71.100.80 English Version Chemicals used for treatment of water intended for human consu
5、mption - Magnesium oxide Produits chimiques utiliss pour le traitement de leau destine la consommation humaine - Oxyde de magnsium Produkte zur Aufbereitung von Wasser fr den menschlichen Gebrauch - Magnesiumoxid This European Standard was approved by CEN on 8 October 2011. CEN members are bound to
6、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 application to the CEN-CEN
7、ELEC 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 Management Centre has th
8、e same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Polan
9、d, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2011 CEN All rights of exploitation in any form and by an
10、y means reserved worldwide for CEN national Members. Ref. No. EN 16004:2011: EBS EN 16004:2011EN 16004:2011 (E) 2 Contents Page Foreword 4Introduction .51 Scope 62 Normative references 63 Description .63.1 Identification .63.1.1 Chemical name .63.1.2 Synonym or common name 63.1.3 Relative molecular
11、mass .63.1.4 Empirical formula.63.1.5 Chemical formula .63.1.6 CAS Registry Number 63.1.7 EINECS reference . 73.2 Commercial forms .73.3 Physical properties 73.3.1 Appearance 73.3.2 Density 73.3.3 Solubility in water 73.3.4 Particle size 73.4 Chemical properties 74 Purity criteria 74.1 General 74.2
12、Composition of commercial product .84.3 Impurities and main by-product .84.4 Chemical parameters 85 Test methods 95.1 Sampling .95.2 Analyses .96 Labelling - Transportation - Storage 96.1 Means of delivery .96.2 Risk and safety labelling according to the EU directives .96.3 Transportation regulation
13、s and labelling . 106.4 Marking 106.5 Storage . 106.5.1 Long term stability 106.5.2 Storage incompatibilities . 10Annex A (informative) General information on magnesium oxide 11A.1 Origin . 11A.1.1 Raw materials 11A.1.2 Manufacturing process 11A.2 Use . 11A.2.1 Function . 11A.2.2 Other properties 11
14、A.2.3 Form in which it is used . 11A.2.4 Treatment dose . 11BS EN 16004:2011EN 16004:2011 (E) 3 A.2.5 Means of application . 11A.2.6 Secondary effects 12A.2.7 Removal of excess product 12A.3 Rules for safe handling and use 12A.4 Emergency procedures . 12A.4.1 First aid . 12A.4.2 Spillage . 12A.4.3 F
15、ire 12Bibliography 13BS EN 16004:2011EN 16004:2011 (E) 4 Foreword This document (EN 16004:2011) 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 publicatio
16、n of an identical text or by endorsement, at the latest by May 2012, and conflicting national standards shall be withdrawn at the latest by May 2012. 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
17、held responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Esto
18、nia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 16004:2011EN 16004:2011 (E) 5 Introduction In respect of potenti
19、al adverse effects on the quality of water intended for human consumption, caused by the product covered by this Standard: this 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; it should be noted that, while awa
20、iting 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 the standard does not confer or imply acceptance or approval of the product in any of the Member States of the EU or E
21、FTA. The use of the product covered by this European Standard is subject to regulation or control by National Authorities. BS EN 16004:2011EN 16004:2011 (E) 6 1 Scope This European Standard is applicable to magnesium oxide used for treatment of water intended for human consumption. It describes the
22、characteristics of magnesium oxide and specifies the requirements and the corresponding test methods for magnesium oxide. It gives information on its use in water treatment. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated re
23、ferences, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 12485, Chemicals used for treatment of water intended for human consumption Calcium carbonate, high-calcium lime, half-burnt dolomite, magnesium oxid
24、e and calcium magnesium carbonate Test methods ISO 3165, Sampling of chemical products for industrial use Safety in sampling ISO 6206, Chemical products for industrial use Sampling Vocabulary 3 Description 3.1 Identification 3.1.1 Chemical name Magnesium oxide. 3.1.2 Synonym or common name Periklas/
25、magnesia. 3.1.3 Relative molecular mass 40,31. 3.1.4 Empirical formula MgO. 3.1.5 Chemical formula MgO. 3.1.6 CAS Registry Number 1)MgO: 1309-48-4. 1) Chemical Abstracts Service Registry Number. BS EN 16004:2011EN 16004:2011 (E) 7 3.1.7 EINECS reference 2). MgO: 215-171-9. 3.2 Commercial forms Magne
26、sium oxide is available in granular form of various particle size ranges. 3.3 Physical properties 3.3.1 Appearance The product is a grey material in round granular form. 3.3.2 Density The density is 3,6 g/cm3at 20 C. The bulk density is from 1,1 g/cm3to 1,3 g/cm3. 3.3.3 Solubility in water The solub
27、ility of product is equal to 0,0062 g/l at 20 C. 3.3.4 Particle size It varies depending on the application (see A.2.3). 3.4 Chemical properties Magnesium oxide product reacts as an alkali when dissolved in water. With carbon dioxide and water it hydrolyses and reacts to form magnesium hydrogen carb
28、onate. 4 Purity criteria 4.1 General This European Standard specifies the minimum purity requirements for calcium magnesium oxide 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 man
29、ufacturing 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 should check the national regulations in order to clarify whether it is of appropriate purity for treatment of water intended f
30、or human consumption, taking into account raw water quality, required dosage, contents of other impurities and additives used in the product not stated in this product standard. Limits have been given for impurities and toxic substances where these are likely to be present in significant quantities
31、from the current production process and raw materials. If a change in the production process or raw materials leads to significant quantities of other impurities or by-products being present, this shall be notified to the user. 2) European Inventory of Existing Commercial Chemical Substances. BS EN
32、16004:2011EN 16004:2011 (E) 8 4.2 Composition of commercial product The product shall conform to the requirements specified in Table 1: Table 1 Composition of commercial product Parameter in mass fraction in % Content of magnesium oxide (MgO), in dry substance 70 Loss of ignition (CO2and H2O) 254.3
33、Impurities and main by-product The product shall conform to the requirements specified in Table 2. Table 2 Impurities Impurity Limit in commercial product, in mass fraction in % Content of free calcium oxide and calcium hydroxide, expressed as CaO max. 5 Content of silicon dioxide, expressed as SiO2
34、max. 2 Content of aluminium oxide, expressed as Al2O3max. 1 Content of iron oxide expressed as Fe2O3max. 2 4.4 Chemical parameters The content of chemical parameters shall conform to the requirements specified in Table 3. BS EN 16004:2011EN 16004:2011 (E) 9 Table 3 Chemical parameters Parameter Limi
35、t of product mg/kg, in dry substance Antimony (Sb) max. 3 Arsenic (As) max. 3 Cadmium (Cd) max. 2 Chromium (Cr) max. 10 Lead (Pb) max. 10 Mercury (Hg) max. 0,5 Nickel (Ni) max. 10 Selenium (Se) max. 3 NOTE Other chemical parameters and indicator parameters are not relevant in magnesium oxide because
36、 the raw materials used in the manufacturing process are free of them. For parametric values of magnesium oxide on trace metal content in drinking water, see 1. 5 Test methods 5.1 Sampling Observe the general recommendations of ISO 3165 and take account of ISO 6206. Prepare the laboratory sample(s)
37、required by the relevant procedure described in EN 12485. 5.2 Analyses Use the relevant methods for analysis described in EN 12485. 6 Labelling - Transportation - Storage 6.1 Means of delivery Magnesium oxide can be delivered in bags, containers and as a bulk material. In order that the purity of th
38、e products 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 prepared before use. 6.2 Risk and safety labelling according to the EU directives 3)At the date of publication of this standard, no labelling is
39、 required. NOTE Regulation (EC) No 1907/2006 of the European Parliament and of the Council of 18 December 2006 concerning the Registration, Evaluation, Authorisation and Restriction of Chemicals (REACH), establishing a European Chemicals Agency, amending Directive 1999/45/EC and repealing Council Re
40、gulation (EEC) No 793/93 and Commission Regulation (EC) No 1488/94 as well as Council Directive 76/769/EEC and Commission Directives 91/155/EEC, 93/67/EEC, 93/105/EC and 2000/21/EC contains a list of substances classified by the EU. Substances not listed in this 3) See 2 and 4. BS EN 16004:2011EN 16
41、004:2011 (E) 10 regulation should be classified on the basis of their intrinsic properties according to the criteria in the Regulation by the person responsible for placing the product on the market. 6.3 Transportation regulations and labelling At the date of publication of this standard, Magnesium
42、oxide products are not classified as dangerous goods. 6.4 Marking The marking shall include the following: “magnesium oxide“, trade name and grade; net mass; name and address of supplier and/or manufacturer; the statement “this product conforms to EN 16004.“ 6.5 Storage 6.5.1 Long term stability Pro
43、duct can be stored for unlimited period of time if kept dry. 6.5.2 Storage incompatibilities Product shall be kept away from acids. BS EN 16004:2011EN 16004:2011 (E) 11 Annex A (informative) General information on magnesium oxide A.1 Origin A.1.1 Raw materials Natural periklas or industrially produc
44、ed magnesium oxide. A.1.2 Manufacturing process Magnesium oxide is manufactured by crushing and granulating. A.2 Use A.2.1 Function Magnesium oxide is used to adjust pH value and hardness in water. A.2.2 Other properties Magnesium oxide can also be used for neutralizing mineral acids. A.2.3 Form in
45、which it is used Magnesium oxide is used in the form of granular material. Table A.1 Usual particle size range Dimensions in millimetres 0,5 2,5 2,0 5,0 If the particle size range is quoted, the content of oversize and undersize should not exceed 10 %. A.2.4 Treatment dose The quantities of magnesiu
46、m oxide to be used depend on the application. A.2.5 Means of application Magnesium oxide is used in filters. BS EN 16004:2011EN 16004:2011 (E) 12 A.2.6 Secondary effects Filtration of suspended solids and removal of metals. A.2.7 Removal of excess product Not applicable. A.3 Rules for safe handling
47、and use Not relevant. A.4 Emergency procedures A.4.1 First aid Not relevant. A.4.2 Spillage The spillage of product should be removed mechanically. A.4.3 Fire The product is not combustible. BS EN 16004:2011EN 16004:2011 (E) 13 Bibliography 1 98/83/EC: Council Directive of 3 November 1998 on the qua
48、lity of water intended for human consumption 2 Regulation (EC) No 1272/2008 of the European Parliament and of the Council of 16 December 2008 on classification, labelling and packaging of substances and mixtures, amending and repealing Directives 67/548/EEC and 1999/45/EC, and amending Regulation (E
49、C) No 1907/2006 3 Regulation (EC) No 1907/2006 of the European Parliament and of the Council of 18 December 2006 concerning the Registration, Evaluation, Authorisation and Restriction of Chemicals (REACH), establishing a European Chemicals Agency, amending Directive 1999/45/EC and repealing Council Regulation (EEC) No 793
