SIST EN 15039:2014
(Main)Chemicals used for treatment of water intended for human consumption - Antiscalants for membranes - Polycarboxilic acids and salts
Chemicals used for treatment of water intended for human consumption - Antiscalants for membranes - Polycarboxilic acids and salts
EN 15039 is applicable to polycarboxylic acids and salts used as antiscalants for membranes for the treatment of water intended for human consumption. It describes the characteristics and specifies the requirements and the corresponding analytical methods for polycarboxylic acids and salts. It gives information on their use as antiscalants for membranes in water treatment.
Produkte zur Aufbereitung von Wasser für den menschlichen Gebrauch - Antiscalants für Membranen - Polycarbonsäuren und deren Salze
Diese Europäische Norm gilt für Polycarbonsäuren und deren Salze (Polycarboxylate), die als Antiscalants (Kesselsteingegenmittel) für Membranen zur Aufbereitung von Wasser für den menschlichen Gebrauch bestimmt sind. Sie beschreibt die Eigenschaften und legt die Anforderungen sowie die entsprechenden Analysenverfahren für Polycarbonsäuren und Polycarboxylate fest. Sie enthält Angaben zu deren Verwendung als Antiscalants für Membranen in der Wasseraufbereitung.
Produits chimiques pour le traitement de l’eau destinée à la consommation humaine - Produits antitartre pour membranes - Acides polycarboxyliques et sels
La présente Norme européenne s’applique aux acides polycarboxyliques et leurs sels utilisés comme produits antitartre pour membranes dans le traitement de l’eau destinée à la consommation humaine. Elle décrit les caractéristiques et spécifie les exigences et les méthodes d’analyse correspondantes des acides polycarboxyliques et de leurs sels. Elle donne des informations pour leur emploi comme produits antitartre pour membranes dans le traitement de l’eau.
Kemikalije, ki se uporabljajo za pripravo pitne vode - Sredstva proti apnencu na membranah - Polikarboksilne kisline in soli
Standard EN 15039 obravnava polikarboksilne kisline in soli, ki se uporabljajo kot sredstva proti apnencu na membranah za pripravo pitne vode. Opisuje značilnosti polikarboksilne kisline in soli ter določa zahteve in ustrezne preskusne metode zanje. Standard podaja informacije o njihovi uporabi proti apnencu na membranah pri pripravi pitne vode.
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Kemikalije, ki se uporabljajo za pripravo pitne vode - Sredstva proti apnencu na membranah - Polikarboksilne kisline in soliProdukte zur Aufbereitung von Wasser für den menschlichen Gebrauch - Antiscalants für Membranen - Polycarbonsäuren und deren SalzeProduits chimiques pour le traitement de l’eau destinée à la consommation humaine - Produits antitartre pour membranes - Acides polycarboxyliques et selsChemicals used for treatment of water intended for human consumption - Antiscalants for membranes - Polycarboxilic acids and salts71.100.80Chemicals for purification of water13.060.20Pitna vodaDrinking waterICS:Ta slovenski standard je istoveten z:EN 15039:2014SIST EN 15039:2014en,fr,de01-junij-2014SIST EN 15039:2014SLOVENSKI
STANDARDSIST EN 15039:20061DGRPHãþD
SIST EN 15039:2014
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 15039
March 2014 ICS 71.100.80 Supersedes EN 15039:2006English Version
Chemicals used for treatment of water intended for human consumption - Antiscalants for membranes - Polycarboxilic acids and salts
Produits chimiques pour le traitement de l'eau destinée à la consommation humaine - Produits antitartre pour membranes - Acides polycarboxyliques et sels
Produkte zur Aufbereitung von Wasser für den menschlichen Gebrauch - Antiscalants für Membranen - Polycarbonsäuren und deren Salze This European Standard was approved by CEN on 5 January 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 bibliographical 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 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 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
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR 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 15039:2014 ESIST EN 15039:2014
EN 15039:2014 (E) 2 Contents Page Foreword . 3 Introduction . 4 1 Scope . 5 2 Normative references . 5 3 Description . 5 3.1 Identification . 5 3.2 Commercial forms . 8 3.3 Physical properties . 8 3.4 Chemical properties . 9 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 5.2 Analyses . 11 6 Labelling - Transportation - Storage . 15 6.1 Means of delivery . 15 6.2 Risk and safety labelling according to the EU legislation . 15 6.3 Transportation regulations and labelling . 15 6.4 Marking . 15 6.5 Storage . 15 Annex A (informative)
General information on polycarboxylic acids and salts . 17 A.1 Origin . 17 A.2 Use . 17 A.3 General rules relating to safety . 18 Annex B (normative)
Analytical methods for polycarboxylic acids and salts . 19 B.1 Determination of dry solid . 19 B.2 Determination of acrylic acid . 20 B.3 Assessment of product quality . 23 Annex C (informative) Environmental, health and safety precautions within chemical laboratory . 24 Bibliography . 25
SIST EN 15039:2014
EN 15039:2014 (E) 3 Foreword This document (EN 15039:2014) 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 latest by September 2014 and conflicting national standards shall be withdrawn at the latest by September 2014. This document supersedes EN 15039:2006. Significant technical differences between this edition and EN 15039:2006 are as follows: • 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 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, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. SIST EN 15039:2014
EN 15039:2014 (E) 4 Introduction In respect of potential adverse effects on the quality of water intended for human consumption, caused by the products covered by this European Standard: a) this European Standard provides no information as to whether the products 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 these products remain in force. NOTE Conformity with this European Standard does not confer or imply acceptance or approval of the products in any of the Member States of the EU or EFTA. The use of the products covered by this European Standard is subject to regulation or control by National Authorities. SIST EN 15039:2014
EN 15039:2014 (E) 5 1 Scope This European Standard is applicable to polycarboxylic acids and salts used as antiscalants for membranes for the treatment of water intended for human consumption. It describes the characteristics and specifies the requirements and the corresponding analytical methods for polycarboxylic acids and salts. It gives information on their use as antiscalants for membranes in water treatment. 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 latest edition of the referenced document (including any amendments) applies. EN ISO 3696, Water for analytical laboratory use - Specification and test methods (ISO 3696) EN ISO 5961, Water quality - Determination of cadmium by atomic absorption spectrometry (ISO 5961) EN ISO 11885, Water quality - Determination of selected elements by inductively coupled plasma optical emission spectrometry (ICP-OES) (ISO 11885) EN ISO 11969, Water quality - Determination of arsenic - Atomic absorption spectrometric method (hydride technique) (ISO 11969) EN ISO 12846, Water quality - Determination of mercury - Method using atomic absorption spectrometry (AAS) with and without enrichment (ISO 12846) ISO 3165, Sampling of chemical products for industrial use — Safety in sampling ISO 6206, Chemical products for industrial use — Sampling — Vocabulary ISO 6703-1, Water quality — Determination of cyanide — Part 1: Determination of total cyanide ISO 8213, Chemical products for industrial use — Sampling techniques — Solid chemical products in the form of particles varying from powders to coarse lumps ISO 8288:1986, Water quality — Determination of cobalt, nickel, copper, zinc, cadmium and lead — Flame atomic absorption spectrometric methods ISO 9174, Water quality — Determination of chromium — Atomic absorption spectrometric methods ISO 9965, Water quality — Determination of selenium — Atomic absorption spectrometric method (hydride technique) 3 Description 3.1 Identification 3.1.1 Chemical name Homopolymers: a) polyacrylic acid; b) polymethacrylic acid; SIST EN 15039:2014
EN 15039:2014 (E) 6 c) polymaleic acid; d) polyaspartic acid. These acids can also be used as sodium, potassium, and ammonium salts. Copolymers of acrylic acid, methacrylic acid, maleic acid, vinylsulfonic acid, allyl sulfonic acid, methylallyl sulfonic acid, 2-acrylamido-2-methyl-1-propanesulfonic acid, vinyl phosphonic acid, 2-methoxyethylphosphonic acid, ethyleneoxide, .-olefines, acrylamide, benzene sulfonic acid, 4-[(2-methyl-2-propenyl)oxy]-, sodium salt, benzene sulfonic acid, 4-vinyl-, sodium salt and 1-propanesulfonic acid, 2-hydroxy-3-(2-propenyloxy)-, monosodium salt. Polymers of polyetherdiamines and phosphorous acid. The acid monomers can also be used as sodium, potassium, and ammonium salts. 3.1.2 Synonym or common names Nil. 3.1.3 Relative molecular mass < 100 000 g/mol. 3.1.4 Empirical formula Nil. 3.1.5 Chemical formula Homopolymers: a) (C2H3COOH)n; b) (C3H5COOH)n; c) (HOOCC2H2COOH)n; d) (C4H5NO4)n. Monomers for the copolymers: C2H3COOH, C3H5COOH, HOOCC2H2COOH, C2H4O3S, C3H6O3S, C4H8O3S, C7H13NO4S, C2H5O3P, C3H9O4P, C3H5NO, C10H12O4SNa, C8H8O3SNa, C6H12O5SNa. Polymer made from polyetherdiamines H2N-C(R)HCH2-(OCH2C(R)H)a-(OCH2C(R)H)b-NH2, a = 2 to 12, b = 0 to 1 and R is hydrogen or methyl, and H3O3P. 3.1.6 CAS Registry Number1) Homopolymers (acids): a) 9003-01-4; b) 25087-26-7;
1) Chemical Abstracts Service Registry Number. SIST EN 15039:2014
EN 15039:2014 (E) 7 c) 26099-09-2; d) 25608-40-6. Table 1 — Salts
Na+ K+ NH4+ Acrylic acid 9003–04–7
(part. neutralized)
25549–84–2 25608–12–2 9003–03–6
(part. neutralized)
28214–57–6 Methacrylic acid 54193–36–1 29297–93–6 28805–15–4 Maleic acid 30915–61–8
Copolymers: Polyacrylic acid-acrylamide: 9003-06-9; Acrylic acid-methacrylic acid: 25751-21-7; Acrylic acid-itaconic acid: 258948-33-8; Acrylic acid-maleic acid: 29132-58-9; Acrylic acid-methacrylic acid-ethyleneoxide: 1246089-72-4; Maleic acid-.-olefine: 39612-00-5; Conversion of acrylic acid with hypophosphite: 129898-01-7; Conversion of acrylic acid with bisulfite: 68479-09-4; Conversion of acrylic acid with isopropanol: 113133-74-7. Monomers: Benzene sulfonic acid, 4-[(2-methyl-2-propenyl)oxy]-, sodium salt: 1208-67-9; Benzene sulfonic acid, 4-ethenyl-, sodium salt: 2695-37-6; 1-Propanesulfonic acid, 2-hydroxy-3-(2-propenyloxy)-, monosodium salt: 52556-42-0. 3.1.7 EINECS reference2) The EINECS-declarations for all mentioned polymers are: POLYMER (All used monomers are listed on the EINECS inventory).
2) European Inventory of Existing Commercial Chemical Substances. SIST EN 15039:2014
EN 15039:2014 (E) 8 3.2 Commercial forms The polycarboxylic acids and polyacrylates are available as aqueous solutions and as in granular and powder form. All concentrations mentioned refer to the active matter and shall be calculated accordingly. 3.3 Physical properties 3.3.1 Appearance The products in solution are a colourless to amber solution and in solid form are white to yellow particles. 3.3.2 Density The density of solid in granular and powder form has typical values between 400 g/dm3 to 1200 g/dm3. The density of solution is 1,00 g/ml to 1,40 g/ml for a product concentration from mass fraction 20 % to 50 % of active matter at 20 °C. 3.3.3 Solubility in water Solid: it is soluble in all portions of pure water; Liquid: it is miscible in all proportions of pure water. 3.3.4 Vapour pressure Not applicable. 3.3.5 Boiling point at 100 kPa3) Solid: not applicable; Liquid: approximately 100 °C . 3.3.6 Solidification point Solid: not applicable; Liquid: within –25 °C and 0 °C (aqueous product solution). 3.3.7 Specific heat Not known. 3.3.8 Viscosity (dynamic) For the liquid the viscosity is equal from 1 mPa.s to 25 mPa.s for a product concentration of 50 g/l. 3.3.9 Critical temperature Not applicable.
3) 100 kPa = 1 bar. SIST EN 15039:2014
EN 15039:2014 (E) 9 3.3.10 Critical pressure Not applicable. 3.3.11 Physical hardness Not applicable. 3.4 Chemical properties The polycarboxylic acids and solutions of polycarboxylic acid salts have acidic to alkaline reactions. The pH value of an aqueous solution of a mass fraction of 1 % is approximately between 2 to 11. 4 Purity criteria 4.1 General This European Standard specifies the minimum purity requirements for polycarboxylic acids and salts used as antiscalants for the membranes in the treatment of water intended for human consumption. Limits are given for impurities commonly present in the products. 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 these products 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 additives used in the products not stated in this 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 lead to significant quantities of impurities, by-products or additives being present, this shall be notified to the user. 4.2 Composition of commercial product The product in solid form shall have a polymer content in mass fraction between 85 % to 100 %. The product in aqueous solution shall conform to the following requirements on a dry mass basis : — polymer content : mass fraction of (20 to 50) %. If additional requirements are agreed between the customer and the manufacturer/supplier, the latter should provide the necessary test methods, if requested, so that the customer can carry out his own quality checks. A certificate of analysis should be provided by the manufacturer/supplier if requested. 4.3 Impurities and main by-products The content of acrylic acid in polycarboxylic acids and salts shall not exceed 1 500 mg/kg of dry product. 4.4 Chemical parameters Content of various metals depends on the origin of the raw materials, most of these elements are present only as traces. The product shall conform to the requirements specified in Table 2. SIST EN 15039:2014
EN 15039:2014 (E) 10 Table 2 — Chemical parameters Parameter
Limit
mg/kg of dry product Antimony (Sb) max. 3 Arsenic (As) max. 3 Cadmium (Cd) max. 3 Chromium (Cr) max. 10 Cyanide (CNˉ) max. 5 Lead (Pb) max. 10 Mercury (Hg) max. 1 Nickel (Ni) max. 10 Selenium (Se) max. 3 NOTE Pesticides and polycyclic aromatic hydrocarbons are not relevant in these products. For other parameters see [1]. 5 Test methods 5.1 Sampling 5.1.1 General Observe the recommendations 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 each 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, a narrow-necked bottle) that it is impracticable to use a sampling implement, take a sample by pouring after the contents have been thoroughly mixed. Otherwise, proceed as described in 5.1.3.1.1.3. 5.1.3.1.1.3 Examine the surface of the liquid. If there are signs of surface contamination, take samples from the surface as described in 5.1.3.1.2; otherwise, take samples as described in 5.1.3.1.3. 5.1.3.1.2 Surface sampling Take a sample using a suitable ladle. Lower the ladle into the liquid until the rim is just below the surface, so that the surface layer runs into it. Withdraw the ladle just before it fills completely and allow any liquid adhering to the ladle to drain off. If necessary, repeat this operation so that, when the other selected containers have been sampled in a similar manner, the total volume of sample required for subsequent analysis is obtained. 5.1.3.1.3 Bottom sampling SIST EN 15039:2014
EN 15039:2014 (E) 11 Take a sample using an open sampling tube, or a bottom-valve sampling tube, suited to the size of container and the viscosity of the liquid. When using an open sampling tube, close it at the top and then lower the bottom end to the bottom of the container. Open the tube and move it rapidly so that the bottom of the tube traverses the bottom of the container before the tube is filled. Close the tube, withdraw it from the container and allow any liquid adhering to the outside of the tube to drain off. When using a bottom-valve sampling tube, close the valve before lowering the tube into the container and then proceed in a similar manner to that when using an open sampling tube. 5.1.3.2 Sampling from tanks and tankers From each access point, take samples as follows: a) from the surface of the liquid, using a ladle as described in 5.1.3.1.2; b) from the bottom of the tank or tanker, using a sampling tube as described in 5.1.3.1.3 or using a specially designed bottom-sampling apparatus; c) from one or more positions, depending on the overall depth, between the bottom and the surface using a weighted sampling can. 5.2 Analyses 5.2.1 Polymer content (main product) 5.2.1.1 General The concentration of polymer (polycarboxilic acid) shall be determined by potentiometric titration. 5.2.1.2 Principle Determination of the amount of polycarboxilic acid by potentiometric titration where the total amount of carboxylic groups is measured, whether they are acidic or neutralized. Dilution of the polymer and the solution is b
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