1、Chemicals used for treatment of water intended for human consumption - Modified starchesBS EN 1406:2017BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06National forewordThis British Standard is the UK implementation of EN 1406:2017. It supersedes BS EN 1406:2009, whic
2、h is withdrawn.The UK participation in its preparation was entrusted to Technical Committee CII/59, Chemicals for drinking water treatment.A list of organizations represented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 all the necessary
3、provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2017 Published by BSI Standards Limited 2017ISBN 978 0 580 92171 1ICS 71.100.80; 13.060.20Compliance with a British Standard cannot confer immunity from legal obligations. This British Stan
4、dard was published under the authority of the Standards Policy and Strategy Committee on 30 November 2017.Amendments/corrigenda issued since publicationDate Text affected BRITISH STANDARDBS EN 1406:2017EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 1406November 2017ICS 71.100.80 Supersedes EN 140
5、6:2009EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGCEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017 CEN Ref. No. EN 1406:2017: EAll rights of exploitation in any form and by any means reserved worldwide for CEN national Member
6、sChemicals used for treatment of water intended for human consumption - Modified starchesProduits chimiques utiliss pour le traitement de leau destine la consommation humaine - Amidons modifisProdukte zur Aufbereitung von Wasser fr den menschlichen Gebrauch - Modifizierte StrkenThis European Standar
7、d was approved by CEN on 11 September 2017.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 s
8、uch 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 ow
9、n 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, G
10、reece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.English VersionEN 1406:2017 (E)European forewordThis document (EN 1406:2017) has been prepa
11、red 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 latest by May 2018and conflicting national standards shall be
12、withdrawn at the latest by May 2018.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.This document supersedes EN 1406:2009 .The signific
13、ant technical difference between this edition and EN 1406:2009 is a wider possible degree of substitution. The main modifications are as follows: Subclause 3.1.4 empirical formulae; Subclause 3.1.5 chemical formulae; Subclause 3.3.2 density; Subclause 3.3.3 solubility; Subclause 4.2 composition of c
14、ommercial product; Subclause A.1.2 manufacturing process; Subclause A.2.2 form in which it is used.Annex A is informative and gives some information on origin, use and handling of modified starches.According to the CEN-CENELEC Internal Regulations, the national standards organizations of the followi
15、ng 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, Luxembourg, Malta, Netherlands, Nor
16、way, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.2BS EN 1406:2017EN 1406:2017 (E)IntroductionIn respect of potential adverse effects on the quality of water intended for human consumption, caused by the product covered by this Euro
17、pean Standard:1) 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;2) it should be noted that, while awaiting the adoption of verifiable European criteria, existing national regulations concerning th
18、e 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 is subject to regulation
19、 or control by National Authorities.3BS EN 1406:2017EN 1406:2017 (E)European foreword 2Introduction . 3European foreword 5Introduction . 61 Scope . 72 Normative references 73 Description . 73.1 Identification 73.1.1 Chemical names 73.1.2 Synonyms or common names . 73.1.3 Relative molecular mass 73.1
20、.4 Empirical formulae 83.1.5 Chemical formulae 83.1.6 CAS Registry Numbers . 93.1.7 EINECS reference . 93.2 Commercial form. 93.3 Physical properties 93.3.1 Appearance . 93.3.2 Density 93.3.3 Solubility 103.3.4 Vapour pressure 103.3.5 Boiling point at 100 kPa . 103.3.6 Melting point 103.3.7 Specific
21、 heat 103.3.8 Viscosity, dynamic 103.3.9 Critical temperature .103.3.10 Critical pressure 103.3.11 Physical hardness .103.4 Chemical properties 104 Purity criteria .104.1 General 104.2 Composition of commercial product . 114.3 Impurities and main by-products 114.4 Chemical Parameters 115 Test method
22、s 115.1 Sampling 115.2 Analyses . 115.2.1 General. 115.2.2 Main product 125.2.3 Impurities . 136 Labelling Transportation Storage .136.1 Means of delivery . 136.2 Labelling in accordance with the EU legislation 136.3 Transportation regulations and labelling . 136.4 Marking 136.5 Storage 136.5.1 Long
23、 term stability 136.5.2 Storage incompatibilities . 14Annex A (informative) General information on modified starches .15Bibliography .184Contents PageBS EN 1406:2017EN 1406:2017 (E)European forewordThis document (EN 1406:2017) has been prepared by Technical Committee CEN/TC 164 “Water supply”, the s
24、ecretariat 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 May 2018and conflicting national standards shall be withdrawn at the latest by May 2018.Attention is drawn to t
25、he 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.This document supersedes EN 1406:2009 .The significant technical difference between this edition and EN 1406:2
26、009 is a wider possible degree of substitution. The main modifications are as follows: Subclause 3.1.4 empirical formulae; Subclause 3.1.5 chemical formulae; Subclause 3.3.2 density; Subclause 3.3.3 solubility; Subclause 4.2 composition of commercial product; Subclause A.1.2 manufacturing process; S
27、ubclause A.2.2 form in which it is used.Annex A is informative and gives some information on origin, use and handling of modified starches.According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard:
28、 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, Serbia, Slovakia, Slovenia,
29、 Spain, Sweden, Switzerland, Turkey and the United Kingdom.5BS EN 1406:2017EN 1406:2017 (E)IntroductionIn respect of potential adverse effects on the quality of water intended for human consumption, caused by the product covered by this European Standard:1) this European Standard provides no informa
30、tion as to whether the product may be used without restriction in any of the Member States of the EU or EFTA;2) 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
31、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 is subject to regulation or control by National Authorities.6BS EN 1406:2017EN 1406
32、:2017 (E)1 ScopeThis European Standard is applicable to modified starches used for treatment of water intended for human consumption. It describes the characteristics of modified starches and specifies the requirements and the corresponding test methods for modified starches.2 Normative referencesTh
33、e 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 amendments) applies.EN ISO 166
34、6 , Starch Determination of moisture content Oven-drying methods (ISO 1666)EN ISO 3696 , Water for analytical laboratory use Specification and test methods (ISO 3696)EN ISO 5377 , Starch hydrolysis products Determination of reducing power and dextrose equivalent Lane and Eynon constant titre method
35、(ISO 5377)ISO 3165, Sampling of chemical products for industrial use - Safety in samplingISO 6206, Chemical products for industrial use -Sampling - VocabularyISO 8213, Chemical products for industrial use - Sampling techniques - Solid chemical products in the form of particles varying from powders t
36、o coarse lumps3 Description3.1 Identification3.1.1 Chemical namesChemical names of typical modified starches are listed:a) non-ionic starch: poly-D-glucose;b) cationic starch: starch 2-hydroxy-3-(trimethylamino) propylether, chloride;c) anionic starch: starch carboxymethyl ether, sodium salt;d) star
37、ch succinate, sodium salt.Other modified starches may be used.3.1.2 Synonyms or common namesa) starch;b) modified starch;c) starch flocculants.3.1.3 Relative molecular massUndegraded potato starch derivatives: typically in the range of 106to 108.7BS EN 1406:2017EN 1406:2017 (E)3.1.4 Empirical formul
38、aeEmpirical formulae for typical modified starches are:a) non-ionic starch: (C6H10O5) n;b) cationic starch: (C6H10O5)(C12H24ONCl)0,7 n ;c) anionic starch: (C6H10O5) (C8H11O7Na)0,5 n”;d) starch succinate, sodium salt: (C6H10O5)(C10H13O8Na)0,1 n.3.1.5 Chemical formulaeChemical formulae for typical mod
39、ified starches are: non-ionic starch:Figure 1 cationic starch:Figure 2 anionic starch:Figure 38 BS EN 1406:2017EN 1406:2017 (E) stach succinate, sodium salt:Figure 43.1.6 CAS Registry Numbers1)a) Non-ionic starch: 9005-25-8; b) cationic starch: 56780-58-6;c) anionic starch: 9063-38-1;d) starch succi
40、nate: 39316-70-6.3.1.7 EINECS reference2)Non-ionic starches have the following EINECS number: 232-679-6. Modify starches are exempt from REACH registration providing the reactants used to carry out the modification are REACH registered.3.2 Commercial formAs specified in this European Standard, modif
41、ied starches are white to pale yellow solid available as granules, flakes or powder or white to yellowish viscous aqueous solutions. Solid form starches contain a small amount of residual moisture.3.3 Physical properties3.3.1 AppearanceModified starches are white to pale yellow solids in the form of
42、 granule, flake or powder or white to yellowish viscous aqueous solutions.3.3.2 DensityThe bulk densities are as follows3):a) starch powders: 0,2 0,7 kg/dm3;b) starch granules: 0,6 - 0,85 kg/dm3;c) aqueous solution: 1,0 1,2 kg/dm3.1) Chemical Abstracts Service Registry Number.2) European Inventory o
43、f Existing Commercial Chemical Substances.3) Those values are indicative.9BS EN 1406:2017EN 1406:2017 (E)3.3.3 SolubilityThe products are soluble in hot or cold water. Their solubility is limited only by viscosity.3.3.4 Vapour pressureNot applicable.3.3.5 Boiling point at 100 kPaNot applicable.3.3.6
44、 Melting pointNot applicable.3.3.7 Specific heatNot applicable.3.3.8 Viscosity, dynamicNot applicable.3.3.9 Critical temperatureNot applicable.3.3.10 Critical pressureNot applicable.3.3.11 Physical hardnessNot applicable.3.4 Chemical propertiesStarch and starch derivatives are non-hazardous material
45、s and not intrinsically reactive. However, in common with many other organic compounds, a strong exothermic reaction will occur if they are brought into dry or liquid neat state with a strong oxidizing agent or strong acid.NOTE In dilute solution, there can be a reaction with, or destruction by, som
46、e of the disinfection and oxidizing agents used in water treatment.4 Purity criteria4.1 GeneralThis European Standard specifies the minimum purity requirements for modified starches used for the treatment of water intended for human consumption. Limits are given for impurities commonly present in th
47、e 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 shall check the national regulations in order to clarify whether it is of appropriate
48、 purity for treatment of water intended for human consumption, taking into account raw water quality, 10 BS EN 1406:2017EN 1406:2017 (E)required dosage, contents of other impurities and additives used in the product not stated in the product standard.Limits have been given for impurities and chemica
49、ls 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 lead to significant quantities of impurities, by-products or additives being present, this shall be notified to the user.4.2 Composition of commercial productThe following requirements shall apply to modified starch products (this specification applies to dry starch): starch content: 70 % mass fraction to 96 % mass fraction; moisture content: 4 % mass frac
