1、BSI Standards PublicationBS EN 887:2016Chemicals used for treatmentof water intended for humanconsumption Aluminiumiron (III) sulfateBS EN 887:2016 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 887:2016. Itsupersedes BS EN 887:2004 which is withdrawn.The UK pa
2、rticipation 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 the necessaryprovisions of a contract. U
3、sers are responsible for its correctapplication. The British Standards Institution 2016. Published by BSI StandardsLimited 2016ISBN 978 0 580 90464 6ICS 13.060.20; 71.100.80Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the a
4、uthority of theStandards Policy and Strategy Committee on 30 April 2016.Amendments issued since publicationDate Text affectedBS EN 887:2016EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 887 March 2016 ICS 71.100.80 Supersedes EN 887:2004English Version Chemicals used for treatment of water int
5、ended for human consumption - Aluminium iron (III) sulfate Produits chimiques utiliss pour le traitement de leau destine la consommation humaine - Sulfate daluminium et de fer (III) Produkte zur Aufbereitung von Wasser fr den menschlichen Gebrauch - Aluminium-Eisen(III)-sulfatThis European Standard
6、was approved by CEN on 18 January 2016. 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
7、 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 of a CEN member into its own
8、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 Macedonia, France, Germany, Gr
9、eece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey andUnited Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG
10、 CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 887:2016 EBS EN 887:2016EN 887:2016 (E) 2 Contents Page European foreword . 4 Introduction 5 1 Scope 6 2 Normati
11、ve references 6 3 Description 6 3.1 Identification 6 3.1.1 Chemical name . 6 3.1.2 Synonym or common name . 6 3.1.3 Relative molecular mass 6 3.1.4 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
12、 3.3.1 Appearance . 7 3.3.2 Density 7 3.3.3 Solubility in water 7 3.3.4 Vapour pressure at 20 C . 7 3.3.5 Boiling point at 100 kPa . 8 3.3.6 Crystallization 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
13、3.4 Chemical properties . 8 4 Purity criteria . 9 4.1 General . 9 4.2 Composition of commercial product . 9 4.3 Impurities and main by-products . 9 4.4 Chemical parameters 9 5 Test methods . 10 5.1 Sampling 10 5.1.1 General 10 5.1.2 Solid 10 5.1.3 Liquid . 10 5.2 Analyses 11 6 Labelling - Transporta
14、tion - Storage . 11 6.1 Means of delivery . 11 6.2 Labelling according to the EU legislation)11 6.3 Transportation regulations and labelling 12 6.4 Marking . 13 6.5 Storage . 13 6.5.1 General 13 BS EN 887:2016EN 887:2016 (E) 3 6.5.2 Long term stability . 13 6.5.3 Storage incompatibilities 13 Annex A
15、 (informative) General information on aluminium iron (III) sulfate 14 A.1 Origin 14 A.1.1 Raw materials 14 A.1.2 Manufacturing process . 14 A.2 Quality of commercial product 14 A.3 Use . 16 A.3.1 Function . 16 A.3.2 Form in which it is used . 16 A.3.3 Treatment dose . 16 A.3.4 Means of application .
16、 16 A.3.5 Secondary effects 17 A.3.6 Removal of excess product . 17 Annex B (normative) General rules relating to safety 18 B.1 Rules for safe handling and use 18 B.2 Emergency procedures 18 B.2.1 First aid 18 B.2.2 Spillage . 18 B.2.3 Fire . 18 Bibliography . 19 BS EN 887:2016EN 887:2016 (E) 4 Euro
17、pean foreword This document (EN 887:2016) 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 publication of an identical text or by endorsement, at the lates
18、t by September 2016, and conflicting national standards shall be withdrawn at the latest by September 2016. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent r
19、ights. This document supersedes EN 887:2004. Significant technical differences between this edition and EN 887:2004 are as follows: a) addition of CAS Registry Numbers for aluminium sulfate tetradecahydrate, hexadecahydrate and octadecahydrate; b) addition of normative reference concerning the deter
20、mination of iron (III) sulfate; c) replacement of warning and safety precautions notes by labelling according to Regulation (EC) No 1272/2008”. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Stan
21、dard: 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, Slovakia, Slovenia, Sp
22、ain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 887:2016EN 887:2016 (E) 5 Introduction In respect of potential adverse effects on the quality of water intended for human consumption, caused by the product covered by this document: a) this document provides no information as to whether
23、 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 regulations concerning the use and/or the characteristics of this product remain in force. NOTE Confo
24、rmity with this document 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 document is subject to regulation or control by National Authorities. BS EN 887:2016EN 887:2016 (E) 6 1 Scope This document is
25、 applicable to aluminium iron (III) sulfate used for treatment of water intended for human consumption. It describes the characteristics of aluminium iron (III) sulfate and specifies the requirements for aluminium iron (III) sulfate and refers to the corresponding analytical methods. It gives inform
26、ation on its use in water treatment. It also determines the rules relating to safe handling and use of aluminium iron (III) sulfate (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 applicatio
27、n. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 890:2012, Chemicals used for treatment of water intended for human consumption - Iron (III) sulfate solution EN 1302, Chemicals used f
28、or treatment of water intended for human consumption - Aluminium-based coagulants - Analytical methods ISO 3165, Sampling of chemical products for industrial use Safety in sampling ISO 6206, Chemical products for industrial use Sampling Vocabulary ISO 8213, Chemical products for industrial use Sampl
29、ing techniques Solid chemical products in the form of particles varying from powders to coarse lumps 3 Description 3.1 Identification 3.1.1 Chemical name Aluminium iron (III) sulfate. 3.1.2 Synonym or common name Aluminium and iron sulfate. 3.1.3 Relative molecular mass Variable (see 3.1.4). 3.1.4 E
30、mpirical formula (AlxFe1-x)2(SO4)3where x is 0,70 to 0,95. 3.1.5 Chemical formula xAl2(SO4)3. (1 - x) Fe2(SO4)3. n H2O where n is variable and x varies from 0,70 to 0,95. BS EN 887:2016EN 887:2016 (E) 7 3.1.6 CAS Registry Number1)The following is a list of CAS Registry Numbers for the components: Al
31、2(SO4)3: 10043-01-3; Al2(SO4)3 14 H2O: 16828-12-9; Al2(SO4)316 H2O: 16828-11-8; Al2(SO4)318 H2O: 7784-31-8; Fe2(SO4)3: 10028-22-5. 3.1.7 EINECS reference2)The following is a list of EINECS reference numbers for the components: Al2(SO4)3: 233-135-0; Fe2(SO4)3: 233-072-9. 3.2 Commercial forms Aluminiu
32、m iron (III) sulfate is available in solid hydrated forms, with different particle sizes (slabs, kibbled, ground, granulated), and as aqueous solutions. 3.3 Physical properties 3.3.1 Appearance The product is a yellow to brown solid or liquid. 3.3.2 Density The density of aluminium iron (III) sulfat
33、e solution varies depending on the composition. For example: 1,330 g/ml for solution containing 36 g/kg of Al and 15 g/kg of Fe at 15 C. The bulk density (loose) of granulated solid product is approximately 0,9 g/cm3. 3.3.3 Solubility in water The solubility of aluminium iron (III) sulfate varies de
34、pending on the content of iron. For example: for a solid form containing 72 g/kg of aluminium and 30 g/kg of iron, at 0 C the solubility is: 36 g/kg of Al in solution; 15 g/kg of Fe in solution. 3.3.4 Vapour pressure at 20 C Not known. 1)Chemical Abstracts Service Registry Number. 2)European Invento
35、ry of Existing Commercial Chemical Substances. BS EN 887:2016EN 887:2016 (E) 8 3.3.5 Boiling point at 100 kPa3)120 C for a saturated solution. 3.3.6 Crystallization point The crystallization point of aluminium iron (III) sulfate varies, depending on the composition. For example: 13 C for composition
36、 containing 36 g/kg of Al and 15 g/kg of Fe. 3.3.7 Specific heat Not known. 3.3.8 Viscosity (dynamic) The viscosity of aluminium iron (III) sulfate solution varies greatly, depending on the composition and content of insoluble matters. For a typical commercially available solution with a composition
37、 containing 36 g/kg of Al and 15 g/kg of Fe, the viscosity is given in Table 1. Table 1 Viscosity Temperature Viscosity (C) (mPas) - 5 62 0 49 10 29 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 Al
38、uminium iron (III) sulfate is a slightly acidic hydrated salt or solution. Very dilute solutions hydrolyze and form a precipitate of aluminium hydroxide and iron hydroxide. NOTE The solubility of aluminium and the solubility of iron depend on the pH value and it is advised to use the product within
39、an appropriate pH range. 3)100 kPa = 1 bar. BS EN 887:2016EN 887:2016 (E) 9 4 Purity criteria 4.1 General This document specifies the minimum purity requirements for aluminium iron (III) sulfate used for the treatment of water intended for human consumption. Limits are given for impurities commonly
40、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 relevant authorities. Users of this product should check the national regulations in order to clarify whether it is
41、 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 products not stated in this document. Limits have been given for impurities and chemical parameters where these
42、 are likely to be present in significant quantities from the current production process and raw materials. If the production process or raw materials lead to significant quantities of impurities, by-products or additives being present, this shall be notified to the user. 4.2 Composition of commercia
43、l product The concentration of active matter (aluminium and iron ion contents) in the commercial product expressed as grams per kilogram of product shall be within 3 % of the manufacturers declared values. NOTE The concentration of water-soluble aluminium and water-soluble iron in commercial product
44、s varies. Typical values for concentration of active matter depending on the forms are given here below: Al (g/kg of product) Fe (g/kg of product) Solid forms 68 to 80 35 to 12 Solution forms 26 to 40 21 to 6 4.3 Impurities and main by-products In solid hydrated forms, the content of insoluble matte
45、r shall not exceed: 25 g/kg of Al + Fe for type 1 and type 2; 30 g/kg of Al + Fe in commercial product for type 3. In solutions, the content of insoluble matter shall not exceed: 25 g/kg of Al + Fe for type 1 and type 2; 15 g/kg of Al + Fe in commercial product for type 3. NOTE 1 The three types are
46、 defined in Table 2. NOTE 2 Insoluble matter consist of unreacted silica (SiO2) and/or aluminium and iron silicates, in various proportions. 4.4 Chemical parameters The product shall conform to the requirements specified in Table 2. BS EN 887:2016EN 887:2016 (E) 10 Table 2 Chemical parameters Parame
47、ter Limit mg/kg of Al + Fe type 1 type 2 type 3 Arsenic (As) max. 14 40 100 Cadmium (Cd) max. 3 50 100 Chromium (Cr) max. 30 700 1 000 Mercury (Hg) max. 4 10 20 Nickel (Ni) max. 20 700 1 000 Lead (Pb) max. 40 200 800 Antimony (Sb) max. 20 40 120 Selenium (Se) max. 20 40 120 NOTE Cyanide (CN-) is usu
48、ally not relevant because of the acidity of the product. Pesticides and polycyclic aromatic hydrocarbons are not relevant since the raw materials used in the manufacturing process are free of them. For maximum impact of the product on trace metal content in drinking water see A.2. 5 Test methods 5.1
49、 Sampling 5.1.1 General Observe the general rules of ISO 3165 and take into account ISO 6206. 5.1.2 Solid Prepare the laboratory sample(s) required by the relevant procedure described in ISO 8213. 5.1.3 Liquid 5.1.3.1 Sampling from drums and bottles 5.1.3.1.1 General 5.1.3.1.1.1 Mix the contents of the container to be sampled by shaking the container, by rolling it or by rocking it from side to side, taking care not to damage the container or spill any of the liquid. 5.1.3.1.1.2 If the design of the container is such (for example
