1、November 2014 Translation by DIN-Sprachendienst.English price group 12No 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).I
2、CS 71.100.80!%1n“2271475www.din.deDDIN EN 12518Chemicals used for treatment of water intended for humanconsumption High-calcium lime;English version EN 12518:2014,English translation of DIN EN 12518:2014-11Produkte zur Aufbereitung von Wasser fr den menschlichen Gebrauch Weikalk;Englische Fassung EN
3、 12518:2014,Englische bersetzung von DIN EN 12518:2014-11Produits chimiques pour le traitement de leau destine la consommation humaine Chaux;Version anglaise EN 12518:2014,Traduction anglaise de DIN EN 12518:2014-11SupersedesDIN EN 12518:2008-04www.beuth.deDocument comprises 18 pagesIn case of doubt
4、, the German-language original shall be considered authoritative.11.14 DIN EN 12518:2014-11 2 A comma is used as the decimal marker. National foreword This document (EN 12518:2014) has been prepared by Technical Committee CEN/TC 164 “Water supply” (Secretariat: AFNOR, France). The responsible German
5、 body involved in its preparation was the DIN-Normenausschuss Wasserwesen (DIN Standards Committee Water Practice), 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 na
6、tional regulations exist in Germany dealing with water for human consumption, in particular the Trinkwasserverordnung (TrinkwV 2001) (German Drinking Water Ordinance). Amendments This standard differs from DIN EN 12518:2008-04 as follows: a) specifications concerning hazard and safety related symbol
7、s have been brought in line with the Globally Harmonized System of Classification, Labelling and Packaging of Chemicals (GHS); b) transportation regulations and labelling have been updated. Previous editions DIN 19611: 1958-05, 1970-02, 1983-04 DIN 19613: 1961-03, 1970-02 DIN 19614: 1961-03, 1970-02
8、 DIN EN 12518: 2000-09, 2008-04 National Annex NA (informative) Bibliography Verordnung ber die Qualitt von Wasser fr den menschlichen Gebrauch (Trinkwasserverordnung TrinkwV 2001) (German Drinking Water Ordinance), as of 02 August 2013 (BGBI. (German Federal Law Gazette) I, 2013, no. 46, p. 2977-30
9、04), as amended by Article 4, Paragraph 22 of the Act of 07 August 2013 (BGBI. I, no. 48, p. 3154-3211)*)*)Obtainable from: Bundesministerium der Justiz (German Federal Ministry of Justice) (Internet: http:/www.gesetze-im-internet.de). EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12518 July
10、2014 ICS 71.100.80 Supersedes EN 12518:2008English Version Chemicals used for treatment of water intended for human consumption - High-calcium lime Produits chimiques pour le traitement de leau destine la consommation humaine - Chaux Produkte zur Aufbereitung von Wasser fr den menschlichen Gebrauch
11、- Weikalk This European Standard was approved by CEN on 20 June 2014. 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 bibliographi
12、cal references concerning such national standards 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
13、 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 standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of
14、Macedonia, France, Germany, Greece, Hungary, Iceland, 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
15、 EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12518:2014 EEN 12518:2014 (E) 2 Contents Page Foreword 3 Introduction .4 1 Scope
16、5 2 Normative references 5 3 Description .5 4 Purity criteria 8 5 Test methods . 10 6 Labelling - Transportation - Storage . 10 Annex A (informative) General information on high-calcium lime 13 A.1 Origin . 13 A.1.1 Raw materials 13 A.1.2 Manufacturing process 13 A.2 Use . 13 A.2.1 Function . 13 A.2
17、.2 Form in which it is used . 13 A.2.3 Other properties 13 A.2.4 Treatment dose . 13 A.2.5 Means of application 14 A.2.6 Secondary effects . 14 A.2.7 Removal of excess product . 14 Annex B (normative) General rules relating to safety . 15 B.1 Rules for safe handling and use . 15 B.2 Emergency proced
18、ures 15 B.2.1 First aid 15 B.2.2 Spillage 15 B.2.3 Fire . 15 Bibliography . 16 DIN EN 12518:2014-11 EN 12518:2014 (E) 3 Foreword This document (EN 12518:2014) has been prepared by Technical Committee CEN/TC 164 “Water supply”, the secretariat of which is held by AFNOR. This European Standard shall b
19、e given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by January 2015 and conflicting national standards shall be withdrawn at the latest by January 2015. Attention is drawn to the possibility that some of the elements of this document
20、 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 12518:2008. The significant technical difference between this edition and EN 12518:2008 is the replacement of warning and safety precautio
21、n notes by labelling according to REGULATION (EC) No 1272/2008 (see 2). 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, Denma
22、rk, 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 12518:20
23、14-11 EN 12518:2014 (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 restriction
24、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 co
25、nfer 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 12518:2014-11 EN 12518:2014 (E) 5 1 Scope This European Standard is applicab
26、le to high-calcium lime used for treatment of water intended for human consumption. It describes the characteristics of high-calcium lime and specifies the requirements and the corresponding test methods for high-calcium lime. It gives information on its use in water treatment. It also determines th
27、e rules relating to safe handling and use (see Annex B). 2 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 lates
28、t 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 oxide and calcium magnesium carbonate - Test methods 3 Description 3.1 Identi
29、fication 3.1.1 General High-calcium limes are calcium oxide, calcium hydroxide and aqueous suspension of calcium hydroxide (milk of lime). 3.1.2 Chemical names a) Calcium oxide. b) Calcium hydroxide. 3.1.3 Synonym or common names a) Calcium oxide: Pulverized high-calcium lime, quicklime, lump high-c
30、alcium lime. b) Calcium hydroxide: Hydrated high-calcium lime, calcium hydroxide - aqueous suspension (milk of lime). 3.1.4 Relative molecular mass a) Calcium oxide: 56,08. b) Calcium hydroxide: 74,09. 3.1.5 Empirical formula a) Calcium oxide: CaO. b) Calcium hydroxide: Ca(OH)2. 3.1.6 Chemical formu
31、la a) Calcium oxide: CaO. b) Calcium hydroxide: Ca(OH)2. DIN EN 12518:2014-11 EN 12518:2014 (E) 6 3.1.7 CAS Registry Number 1)a) Calcium oxide: 1305-78-8. b) Calcium hydroxide: 1305-62-0. 3.1.8 EINECS reference 2)a) Calcium oxide: 215-138-9. b) Calcium hydroxide: 215-137-3. 3.2 Commercial forms High
32、-calcium lime is available in the following commercial forms: pulverized high calcium lime (quicklime): white powder (CaO); lump high-calcium lime (quicklime): white lump (CaO); hydrated high-calcium lime: white powder, (Ca(OH)2); milk of lime: aqueous suspension of calcium hydroxide (usual content
33、of calcium hydroxide is a mass fraction between 10 % to 40 %). 3.3 Physical properties 3.3.1 Appearance a) Calcium oxide: white, lumps or powder. b) Calcium hydroxide: white powder. c) Calcium hydroxide suspension: aqueous, milky suspension. 3.3.2 Density a) Calcium oxide: 3,35 kg/dm3at 20 C. Bulk d
34、ensity: 800 kg/m3to 1 200 kg/m3; b) Calcium hydroxide: 2,24 kg/dm3at 20 C. Bulk density: 300 kg/m3to 600 kg/m3. 3.3.3 Solubility (in water) Calcium oxide: not applicable. Calcium hydroxide: 1,85 g/l at 0 C 1,65 g/l at 20 C 1,53 g/l at 30 C 1) Chemical Abstracts Service Registry Number. 2) European I
35、nventory of Existing Commercial Chemical Substances. DIN EN 12518:2014-11 EN 12518:2014 (E) 7 1,40 g/l at 40 C 1,28 g/l at 50 C 1,16 g/l at 60 C 1,04 g/l at 70 C 0,92 g/l at 80 C 0,81 g/l at 90 C 0,71 g/l at 100 C 3.3.4 Vapour pressure Not applicable. 3.3.5 Boiling point at 100 kPa3)a) Calcium oxide
36、: 2 850 C. b) Calcium hydroxide: Decomposes at 580 C and forms calcium oxide and water. 3.3.6 Melting point a) Calcium oxide: 2 570 C. b) Calcium hydroxide: Decomposes at 580 C and forms calcium oxide and water. c) Calcium hydroxide suspension: freezes at 0 C. 3.3.7 Specific heat Not applicable. 3.3
37、.8 Viscosity (dynamic) For calcium hydroxide suspension: depends on concentration and particle size. 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 Aqueous suspensions are strongly alkaline. Calcium
38、 oxide (CaO) reacts with water to form calcium hydroxide Ca(OH)2, and with acids to form calcium salts. These reactions are highly exothermic. 3) 100 kPa = 1 bar. DIN EN 12518:2014-11 EN 12518:2014 (E) 8 4 Purity criteria 4.1 General This European Standard specifies the minimum purity requirements f
39、or high-calcium lime 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 the user and when ne
40、cessary 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 impurities and additiv
41、es 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 materials leads to signific
42、ant quantities of impurities, by-products or additives being present, this shall be notified to the user. 4.2 Composition of commercial product The products shall conform to the requirements specified in Table 1. Table 1 Major constituents and grading Parameter Pulverized high-calcium lime Lump high
43、-calcium lime Hydrated high-calcium lime Milk of limebClass 1 Class 2 Class 3 Class 1 Class 2 Class 3 Class 1 Class 2 Class 3 Class 1 Class 2 Class 3 Content of water-soluble CaO expressed as CaO in mass fraction in % 87a 84 80 87a 84 80 Content of water-soluble Ca(OH)2in dry substance expressed as
44、Ca(OH)2in mass fraction in % 92a 87 83 92a 87 83 Retention on sieving in mass fraction in % dry substance 0,60 mm 0,1 0,1 0,1 not applicable 0,1 0,1 0,1 0,1 0,1 0,1 0,09 mm 7,0 7,0 7,0 not applicable 5,5 5,5 5,5 5,5 5,5 5,5 aThe user may specify a higher content of lime. bSee A.2.3 (for solubility i
45、ndex). 4.3 Impurities The products shall conform to the requirements specified in Table 2. DIN EN 12518:2014-11 EN 12518:2014 (E) 9 Table 2 Impurities Impurity Limit in mass fraction in % of dry product Grade 1 Grade 2 Grade 3 Si expressed as SiO2max. 2,5 3,0 4,0 Al expressed as Al2O3max. 0,5 1,0 2,
46、0 Fe expressed as Fe2O3max. 0,5 1,0 1,5 Mn expressed as MnO2max. 0,2 0,4 0,5 CaCO3max. 7,0 8,0 9,0 NOTE The user can specify a lower content of impurities. 4.4 Water insoluble matter The product shall conform to the requirements specified in Table 3. Table 3 Water insoluble matter Parameter Pulveriz
47、ed / Lump high calcium lime Hydrated high calcium lime / milk of lime Grade A Grade B Grade C Grade A Grade B Grade C Content of water insoluble matter in mass fraction in % 13 16 20 8 13 17 NOTE The user can specify a lower value for water insoluble matter. 4.5 Chemical parameters The product shall
48、 conform to the requirements specified in Table 4. Table 4 Chemical parameters Parameter Limit in mg/kg of dry product Type 1 Type 2 Arsenic (As) max. 5 20 Cadmium (Cd) max. 2 2 Chromium (Cr) max. 20 20 Mercury (Hg) max. 0,3 0,5 Nickel (Ni) max. 10 20 Lead (Pb) max. 10 50 Antimony (Sb) max. 3 4 Selenium (Se) max. 3 4 NOTE 1 Other chemical parameters and indicator parameters are not relevant in high-calcium lime because the raw materi
