BS EN 12931:2015 – TC:2020 Edition
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Tracked Changes. Chemicals used for treatment of water intended for human consumption. Chemicals for emergency use. Sodium dichloroisocyanurate, anhydrous
| Published By | Publication Date | Number of Pages |
| BSI | 2020 | 67 |
This European Standard is applicable to sodium dichloroisocyanurate anhydrous used for emergency treatment of water intended for human consumption. It describes the characteristics of sodium dichloroisocyanurate anhydrous and specifies the requirements and the corresponding test methods for sodium dichloroisocyanurate anhydrous. It gives information on its use in water treatment. It also determines the rules relating to safe handling and use of sodium dichloroisocyanurate anhydrous (see Annex B).
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 37 | Contents Page |
| 41 | 1 Scope 2 Normative references 3 Description 3.1 Identification 3.1.1 Chemical name 3.1.2 Synonym or common name 3.1.3 Relative molecular mass 3.1.4 Empirical formula |
| 42 | 3.1.5 Chemical formula 3.1.6 CAS Registry Number1) 3.1.7 EINECS reference2) 3.2 Commercial form 3.3 Physical properties 3.3.1 Appearance and odour 3.3.2 Density 3.3.3 Solubility in water 3.3.4 Vapour pressure 3.3.5 Boiling point at 100 kPa3) 3.3.6 Melting point 3.3.7 Specific heat |
| 43 | 3.3.8 Viscosity (dynamic) 3.3.9 Critical temperature 3.3.10 Critical pressure 3.3.11 Physical hardness 3.4 Chemical properties 4 Purity criteria 4.1 General 4.2 Composition of commercial product 4.3 Impurities and main by-products 4.4 Chemical parameters |
| 44 | 5 Test methods 5.1 Sampling 5.2 Analysis 5.2.1 Determination of available chlorine (main product) 5.2.1.1 Principle 5.2.1.2 Reagents |
| 45 | 5.2.1.3 Apparatus 5.2.1.4 Procedure |
| 46 | 5.2.1.5 Expression of results 5.2.1.6 Accuracy 5.2.2 Impurities 5.2.2.1 Water |
| 47 | 5.2.2.2 Sodium chloride |
| 48 | 5.2.3 Chemical parameters 5.2.3.1 Determination of antimony (Sb), arsenic (As), cadmium (Cd), chromium (Cr), lead (Pb), nickel (Ni) and selenium (Se) |
| 49 | 5.2.3.2 Determination of the mercury content (Hg) |
| 51 | 6 Labelling – Transportation – Storage 6.1 Means of delivery 6.2 Labelling according to the EU legislation4) |
| 52 | 6.3 Transportation regulations and labelling 6.4 Marking |
| 53 | 6.5 Storage 6.5.1 Long term stability 6.5.2 Storage incompatibilities |
| 54 | Annex A (informative)General information on sodium dichloroisocyanurate, anhydrous A.1 Origin A.1.1 Raw materials A.1.2 Manufacturing process A.2 Use A.2.1 Function A.2.2 Form in which it is used A.2.3 Treatment dose A.2.4 Means of application A.2.5 Secondary effects |
| 55 | A.2.6 Removal of excess product |
| 56 | Annex B (normative)General rules relating to safety B.1 Rules for safe handling and use B.2 Emergency procedures B.2.1 First aid B.2.2 Spillage |
| 57 | B.2.3 Fire |
| 58 | Annex C (normative)Determination of arsenic, antimony and selenium (atomic absorption spectrometry hydride technique) C.1 General principle C.2 Interferences C.3 Reagents |
| 60 | C.4 Apparatus |
| 61 | C.5 Procedure C.5.1 Preparation of the apparatus |
| 62 | C.5.2 Preparation of calibration solutions C.5.3 Preparation of test solutions and standard solutions C.5.4 Determination of arsenic with sodium borohydride C.5.5 Determination of selenium with sodium borohydride |
| 63 | C.5.6 Determination of antimony with sodium borohydride C.6 Calculation |
