SIST EN 899:2009

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Kemikalije, ki se uporabljajo za pripravo pitne vode - Žveplova kislinaProdukte Zur Aufbereitung von Wasser für den menschlichen Gebrauch - SchwefelsäureProduits chimiques utilisés pour le traitement de l'eau destinée à la consommation humaine - Acide sulfuriqueChemicals used for treatment of water intended for human consumption - Sulphuric acid71.100.80Chemicals for purification of water13.060.20Pitna vodaDrinking waterICS:Ta slovenski standard je istoveten z:EN 899:2009SIST EN 899:2009en,fr,de01-maj-2009SIST EN 899:2009SLOVENSKI
STANDARDSIST EN 899:20031DGRPHãþD



SIST EN 899:2009



EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 899March 2009ICS 71.100.80Supersedes EN 899:2003
English VersionChemicals used for treatment of water intended for humanconsumption - Sulphuric acidProduits chimiques utilisés pour le traitement de l'eaudestinée à la consommation humaine - Acide sulfuriqueProdukte Zur Aufbereitung von Wasser für denmenschlichen Gebrauch - SchwefelsäureThis European Standard was approved by CEN on 8 February 2009.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN 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 translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre:
Avenue Marnix 17,
B-1000 Brussels© 2009 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 899:2009: ESIST EN 899:2009



EN 899:2009 (E)
2 Contents page Foreword . 3Introduction . 41Scope . 52Normative references . 53Description . 53.1Identification . 53.2Commercial forms . 63.3Physical properties . 63.4Chemical properties . 84Purity criteria . 84.1General . 84.2Composition of commercial product . 84.3Chemical parameters and indicator parameters . 95Test methods . 95.1Sampling . 95.2Analyses . 106Labelling - Transportation - Storage . 136.1Means of delivery . 136.2Risk and safety labelling according to the EU Directives
...................................................................... 136.3Transportation regulations and labelling .................................................................................................. 146.4Marking ......................................................................................................................................................... 156.5Storage .......................................................................................................................................................... 15Annex A (informative)
General information on sulfuric acid . 16A.1Origin . 16A.2Use . 16Annex B (normative)
General rules relating to safety . 17B.1Rules for safe handling and use . 17B.2Emergency procedures . 17Bibliography . 18 SIST EN 899:2009



EN 899:2009 (E) 3 Foreword This document (EN 899:2009) 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 2009, and conflicting national standards shall be withdrawn at the latest by September 2009. 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 899:2003. Differences between this edition and EN 899:2003 are editorial to harmonize the text with other standards in this series. Annex A is informative; Annex B is normative. 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, Cyprus, Czech Republic, Denmark, Estonia, 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.
SIST EN 899:2009



EN 899:2009 (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 standard: a) this standard provides no information as to whether the product may be used without restriction in any of 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 the 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. SIST EN 899:2009



EN 899:2009 (E) 5 1 Scope This European Standard is applicable to sulfuric acid used for treatment of water intended for human consumption. It describes the characteristics of sulfuric acid and specifies the requirements and the corresponding test methods for sulfuric acid. 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 references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 1483, Water quality – Determination of mercury – Method using atomic absorption spectrometry EN 26595, Water quality - Determination of total arsenic – Silver diethyldithiocarbamate spectrophotometric method (ISO 6595:1982) EN ISO 3696, Water for analytical laboratory use – Specification and test methods (ISO 3696:1987) EN ISO 11885, Water quality – determination of 33 elements by inductively coupled plasma atomic emission spectroscopy (ISO 11885:1996) ISO 910, Sulphuric acid and oleum for industrial use – Determination of total acidity, and calculation of free sulphur trioxide content of oleum – Titrimetric method ISO 3165, Sampling of chemical products for industrial use – Safety in sampling ISO 3423, Sulphuric acid and oleums for industrial use – Determination of sulphur dioxide content - Iodometric method ISO 6206, Chemical products for industrial use – Sampling – Vocabulary ISO 6332, Water quality – Determination of iron – Spectrometric method using 1,10-phenanthroline ISO 8288, 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 Sulfuric acid. 3.1.2 Synonym or common name Oil of vitriol. SIST EN 899:2009



EN 899:2009 (E)
6 3.1.3 Relative molecular mass 98. 3.1.4 Empirical formula H2SO4. 3.1.5 Chemical formula H2SO4. 3.1.6 CAS Registry Number 1) 7664-93-9. 3.1.7 EINECS reference 2) 231-639-5. 3.2 Commercial forms Sulfuric acid is available as aqueous solutions. NOTE For some water treatment applications, diluted acid can be used. 3.3 Physical properties 3.3.1 Appearance The product is clear or slightly turbid, colourless liquid. 3.3.2 Density 1,84 g/ml for sulfuric acid concentration of mass fraction of 96 % at 20 °C. 1,71 g/ml for sulfuric acid concentration of mass fraction of 78 % at 20 °C. 1,18 g/ml for sulfuric acid concentration of mass fraction of 25 % at 20 °C. 3.3.3 Solubility in water At all concentrations, the product is miscible with water.
1) Chemical Abstracts Service Registry Number. 2) European Inventory of Existing Commercial Chemical Substances. SIST EN 899:2009



EN 899:2009 (E) 7 3.3.4 Vapour pressure Below 0,00001 kPa for sulfuric acid concentration of mass fraction of 96 % at 20 °C. Below 0,1 kPa for sulfuric acid concentration of mass fraction of 78 % at 20 °C. Below 1,9 kPa for sulfuric acid concentration of mass fraction of 25 % at 20 °C. 3.3.5 Boiling point at 100 kPa 3) + 310 °C for sulfphuric acid concentration of mass fraction of 96 %. Approximately + 200 °C for sulfuric acid concentration of mass fraction of 78 %. + 106,5 °C for sulfuric acid concentration of mass fraction of 25 %. 3.3.6 Melting point + 5 °C for sulfuric acid concentration of mass fraction of 98 %. - 10 °C for sulfuric acid concentration of mass fraction of 96 %. - 11 °C for sulfuric acid concentration of mass fraction of 78 %. - 22 °C for sulfuric acid concentration of mass fraction of 25 %. 3.3.7 Specific heat 1,465 kJ/(kg.K) for sulfuric acid concentration of mass fraction of 96 % at 20 °C. 3.3.8 Viscosity (dynamic) 22 mPa.s for sulfuric acid concentration of mass fraction of 96 % at 20 °C. 16,7 mPa.s for sulfuric acid concentration of mass fraction of 78 % at 20 °C. 3.3.9 Critical temperature Not applicable. 3.3.10 Critical pressure Not applicable. 3.3.11 Physical hardness Not applicable.
3) 100 kPa = 1 bar. SIST EN 899:2009



EN 899:2009 (E)
8 3.4 Chemical properties Concentrated sulfuric acid reacts violently:  with bases or with water (exothermic reaction);  with reducing agents due to oxidizing properties;  with combustible materials due to oxidizing and dehydrating properties. The concentrated acid is a strong oxidizing agent and can cause ignition in contact with organic materials. Sulfuric acid (of sulfuric acid content less than a mass fraction of 70 % attacks most common metals, e.g. iron, zinc, liberating the flammable gas hydrogen. WARNING — Mixing with water produces a marked temperature rise. Therefore ALWAYS ADD THE ACID TO THE WATER (NEVER THE REVERSE), slowly and agitating continuously. 4 Purity criteria 4.1 General This European Standard specifies the minimum purity requirements for sulfuric acid 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 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 for human consumption, taking into account raw water quality, contents of other impurities and additives used in the products not stated in the 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 usual commercial concentrations of sulfuric acid available have a mass fraction of 96 % or 98 %. Other concentrations of sulfuric acid between a mass fraction of 25 % and 80 % are also available. If sold as concentrated acid, the mass fraction of sulfuric acid shall be in the range of 92 % to 98 %. The concentration of sulfuric acid shall be within a mass fraction of ± 1 % of the manufacturer's declared value. SIST EN 899:2009



EN 899:2009 (E)
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