SANS 50899-2008 Chemicals used for treatment of water intended for human consumption - Sulfuric acid《人用水处理作业中使用的化学品 硫酸》.pdf

《SANS 50899-2008 Chemicals used for treatment of water intended for human consumption - Sulfuric acid《人用水处理作业中使用的化学品 硫酸》.pdf》由会员分享，可在线阅读，更多相关《SANS 50899-2008 Chemicals used for treatment of water intended for human consumption - Sulfuric acid《人用水处理作业中使用的化学品 硫酸》.pdf（21页珍藏版）》请在麦多课文档分享上搜索。

1、 Collection of SANS standards in electronic format (PDF) 1. Copyright This standard is available to staff members of companies that have subscribed to the complete collection of SANS standards in accordance with a formal copyright agreement. This document may reside on a CENTRAL FILE SERVER or INTRA

2、NET SYSTEM only. Unless specific permission has been granted, this document MAY NOT be sent or given to staff members from other companies or organizations. Doing so would constitute a VIOLATION of SABS copyright rules. 2. Indemnity The South African Bureau of Standards accepts no liability for any

3、damage whatsoever than may result from the use of this material or the information contain therein, irrespective of the cause and quantum thereof. ISBN 978-0-626-21422-7 SANS 50899:2008Edition 1EN 899:2003Edition 2SOUTH AFRICAN NATIONAL STANDARD Chemicals used for treatment of water intended for hum

4、an consumption Sulfuric acid This national standard is the identical implementation of EN 899:2003 and is adopted with the permission of CEN, rue de Stassart 36, B-1050 Brussels. Published by Standards South Africa 1 dr lategan road groenkloof private bag x191 pretoria 0001 tel: 012 428 7911 fax: 01

5、2 344 1568 international code + 27 12 www.stansa.co.za Standards South Africa SANS 50899:2008 Edition 1 EN 899:2003 Edition 2 Table of changes Change No. Date Scope National foreword This South African standard was approved by National Committee StanSA TC 5140.19, Water, in accordance with procedure

6、s of Standards South Africa, in compliance with annex 3 of the WTO/TBT agreement. This SANS document was published in April 2008. EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 899June 2003ICS 71.100.80 Supersedes EN 899:1996English versionChemicals used for treatment of water intended for humanc

7、onsumption - Sulfuric acidProduits chimiques utiliss pour le traitement de leaudestine la consommation humaine - Acide sulfuriqueProdukte zur Aufbereitung von Wasser fr denmenschlichen Gebrauch - SchwefelsureThis European Standard was approved by CEN on 25 April 2003.CEN members are bound to comply

8、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 Management Centr

9、e 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 Management Centre has the same status as the officialversio

10、ns.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and UnitedKingdom.EUROPEAN COMMITTEE FOR STANDARDIZ

11、ATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2003 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 899:2003 ESANS 50899:2008This s tandard may only be used and

12、 printed by approved subscription and freemailing clients of the SABS .EN 899:2003 (E)2Contents pageForeword3Introduction .41 Scope 52 Normative references 53 Description .53.1 Identification.53.2 Commercial forms .63.3 Physical properties63.4 Chemical properties 84 Purity criteria84.1 General84.2 C

13、omposition of commercial product .84.3 Chemical parameters and indicator parameters 95 Test methods95.1 Sampling.95.2 Analyses .106 Labelling - Transportation - Storage136.1 Means of delivery.136.2 Risk and safety labelling according to the EU Directives 136.3 Transportation regulations and labellin

14、g 146.4 Marking .156.5 Storage15Annex A (informative) General information on sulfuric acid 16A.1 Origin.16A.2 Use.16Annex B (normative) General rules relating to safety .17B.1 Rules for safe handling and use.17B.2 Emergency procedures .17Bibliography 18SANS 50899:2008This s tandard may only be used

15、and printed by approved subscription and freemailing clients of the SABS .EN 899:2003 (E)3ForewordThis document (EN 899:2003) has been prepared by Technical Committee CEN/TC 164 “Water supply”, thesecretariat of which is held by AFNOR.This European Standard shall be given the status of a national st

16、andard, either by publication of an identical text orby endorsement, at the latest by December 2003, and conflicting national standards shall be withdrawn at the latestby December 2003.This document supersedes EN 899:1996.Significant technical differences between this edition and EN 899:1996 are as

17、follows:a) new procedure for sampling ;b) taking into account the new EU Directive 98/83/EC ;c) expansion of Table 2 to include more details of materials for containers.Annex A is informative.Annex B is normative.NOTE Conformity with the standard does not confer or imply acceptance or approval of th

18、e product in any of the MemberStates of the EU or EFTA. The use of the product covered by this European Standard is subject to regulation or control byNational Authorities.According to the CEN/CENELEC Internal Regulations, the national standards organizations of the followingcountries are bound to i

19、mplement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal,Slovakia, Spain, Sweden, Switzerland and the United Kingdom.SANS 50899:2008This s tandard may only be used a

20、nd printed by approved subscription and freemailing clients of the SABS .EN 899:2003 (E)4IntroductionIn respect of potential adverse effects on the quality of water intended for human consumption, caused by theproduct covered by this standard:a) this standard provides no information as to whether th

21、e product may be used without restriction in any ofMember States of the EU or EFTA ;b) it should be noted that, while awaiting the adoption of verifiable European criteria, existing national regulationsconcerning the use and/or the characteristics of this product remain in force.SANS 50899:2008This

22、s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .EN 899:2003 (E)51 ScopeThis 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

23、 the requirements and the corresponding test methodsfor sulfuric acid. It gives information on its use in water treatment.2 Normative referencesThis European Standard incorporates by dated or undated reference, provisions from other publications. Thesenormative references are cited at the appropriat

24、e places in the text, and the publications are listed hereafter. Fordated references, subsequent amendments to or revisions of any of these publications apply to this EuropeanStandard only when incorporated in it by amendment or revision. For undated references the latest edition of thepublication r

25、eferred to applies (including amendments).EN 1483, Water quality Determination of mercury.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 (I

26、SO 3696:1987).EN ISO 11885, Water quality determination of 33 elements by inductively coupled plasma atomic emissionspectroscopy (ISO 11885:1996).ISO 910, Sulfuric acid and oleum for industrial use Determination of total acidity, and calculation of free sulfurtrioxide content of oleum Titrimetric me

27、thod.ISO 3165, Sampling of chemical products for industrial use Safety in sampling.ISO 3423, Sulfuric acid and oleums for industrial use Determination of sulphur dioxide content - Iodometricmethod.ISO 6206, Chemical products for industrial use Sampling Vocabulary.ISO 6332, Water quality Determinatio

28、n of iron Spectrometric method using 1,10-phenanthroline.ISO 8288, Water quality Determination of cobalt, nickel, copper, zinc, cadmium and lead Flame atomicabsorption spectrometric methods.ISO 9174, Water quality Determination of chromium Atomic absorption spectrometric methods.ISO 9965, Water qual

29、ity Determination of selenium Atomic absorption spectrometric method (hydridetechnique).3 Description3.1 Identification3.1.1 Chemical nameSulfuric acid.3.1.2 Synonym or common nameOil of vitriol.SANS 50899:2008This s tandard may only be used and printed by approved subscription and freemailing clien

30、ts of the SABS .EN 899:2003 (E)63.1.3 Relative molecular mass98.3.1.4 Empirical formulaH2SO4.3.1.5 Chemical formulaH2SO4.3.1.6 CAS Registry Number 1)7664-93-9.3.1.7 EINECS reference 2)231-639-5.3.2 Commercial formsSulfuric acid is available as aqueous solutions.NOTE For some water treatment applicat

31、ions diluted acid can be used.3.3 Physical properties3.3.1 AppearanceThe product is clear or slightly turbid, colourless liquid.3.3.2 Density1,84 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

32、 for sulfuric acid concentration of mass fraction of 25 % at 20 C.3.3.3 Solubility in water3.3.4 At all concentrations, the product is miscible with water.Vapour pressureBelow 0,000 01 kPa for sulfuric acid concentration of mass fraction of 96 % at 20 C.Below 0,1 kPa for sulfuric acid concentration

33、of mass fraction of 78 % at 20 C.Below 1,9 kPa for sulfuric acid concentration of mass fraction of 25 % at 20 C.1) Chemical Abstracts Service Registry Number.2) European Inventory of Existing Commercial Chemical Substances.SANS 50899:2008This s tandard may only be used and printed by approved subscr

34、iption and freemailing clients of the SABS .EN 899:2003 (E)73.3.5 Boiling point at 100 kPa 3)+ 310 C for sulfuric 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 2

35、5 %.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 heat1,4

36、65 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 temperatureNot applicable.3.3.10

37、 Critical pressureNot applicable.3.3.11 Physical hardnessNot applicable.3) 100 kPa = 1 bar.SANS 50899:2008This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .EN 899:2003 (E)83.4 Chemical propertiesConcentrated sulfuric acid reacts violently :with

38、 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 a

39、cid 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 ACIDTO THE WATER (NEVER THE REVERSE), slowly and agitating continuously.4 Purity cri

40、teria4.1 GeneralThis European Standard specifies the minimum purity requirements for sulfuric acid used for the treatment of waterintended for human consumption. Limits are given for impurities commonly present in the product. Depending onthe raw material and the manufacturing process other impuriti

41、es may be present and, if so, this shall be notified tothe user and when necessary to relevant authorities.NOTE Users of this product should satisfy themselves that it is of appropriate purity for treatment of water intended forhuman consumption, taking into account raw water quality, required dosag

42、e, contents of other impurities and additives used inthe products not stated in the product standard, and other relevant factors.Limits have been given for impurities and chemicals parameters where these are likely to be present in significantquantities from the current production process and raw ma

43、terials. If the production process or raw materials lead tosignificant quantities of impurities, by-products or additives being present, this shall be notified to the user.4.2 Composition of commercial productThe usual commercial concentrations of sulfuric acid available have a mass fraction of 96%

44、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 % sulfuric acid.The concentration of sulfuric acid shall be within a mass fraction of 1 % (m/

45、m) of the manufacturers declaredvalue.SANS 50899:2008This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .EN 899:2003 (E)94.3 Chemical parameters and indicator parametersThe product shall conform to the requirements specified in Table 1.Table 1 Ch

46、emical parameters and indicator parametersParameter Limit in mg/kg of H2SO4Sulfur dioxide (SO2) max. 100Iron (Fe) max. 100Arsenic (As) max. 0,4Cadmium (Cd) max. 0,1Chromium (Cr) max. 4Mercury (Hg) max. 0,1Nickel (Ni) max. 4Lead (Pb) max. 4Antimony (Sb) max. 1Selenium (Se) max. 1NOTE For chemical par

47、ameter values of sulfuric acid on trace metal contentin drinking water, see 1.5 Test methods5.1 Sampling5.1.1 GeneralObserve the recommendations of ISO 3165 and take account of ISO 6206.NOTE The sampling is carried out at the premises of the manufacturer of the concentrated sulfuric acid unless thec

48、ustomer has adequate facilities to carry out this operation safely at his own premises.5.1.2 Sampling from drums and bottles5.1.2.1 General5.1.2.1.1 Mix the contents of the container to be sampled by shaking the container, by rolling it or by rocking itfrom side to side, taking care not to damage th

49、e container or spill any of the liquid.5.1.2.1.2 If the design of the container is such (for example, a narrow-necked bottle) that it is impracticable touse a sampling implement, take a sample by pouring after the contents have been thoroughly mixed. Otherwise,proceed as described in 5.1.2.1.3.5.1.2.1.3 Examine the surface of the liquid. If there are signs of surface contamination, take samples from thesurface as described in 5.1.2.2. Otherwise, take samples as described in 5.1.2.3.5.1.2.2 Surface samplingTake a s