This European Standard is applicable to silver nitrate and silver sulfate !and silver chloride” for the preservation of water intended for human consumption in intermittent applications in:<\/p>\n
water supply plants, including their pipeline networks (small-size plants);<\/p>\n<\/li>\n
water for the preparation of foodstuffs;<\/p>\n<\/li>\n
water which is stored in packaged form or kept in enclosed systems (for example, water supply systems in land, water and airborne vehicles).<\/p>\n<\/li>\n<\/ul>\n
The purpose of adding silver salts is to prevent the detrimental proliferation of microorganisms in water during storage or in enclosed supply systems.<\/p>\n
This European Standard describes the characteristics of silver salts, specifies the requirements for silver salts and gives reference to the analytical methods. It gives information on their use in water treatment. It also determines the rules relating to safe handling and use of silver salts (see Annex B).<\/p>\n
| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 7<\/td>\n | 1 Scope 2 Normative references <\/td>\n<\/tr>\n | ||||||
| 8<\/td>\n | 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 3.1.5 Chemical formula <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | 3.1.6 CAS Registry Number ) 3.1.7 \ufeff!EINECS number” ) 3.2 Commercial forms 3.3 Physical properties 3.3.1 Appearance 3.3.2 Density 3.3.3 Solubility (in water) <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | 3.3.4 Vapour pressure at 20 \u00b0C 3.3.5 Boiling point at 100 kPa ) 3.3.6 Melting point 3.3.7 Specific heat 3.3.8 Viscosity (dynamic) 3.3.9 Critical temperature 3.3.10 Critical pressure 3.3.11 Physical hardness 3.4 Chemical properties <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | 4 Purity criteria 4.1 General 4.2 Composition of commercial products 4.3 Impurities and main by-products <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | 4.4 Chemical parameters 5 Test methods 5.1 Sampling <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | 5.2 Analyses 5.2.1 Silver content (main product) 5.2.2 Impurities 5.2.2.1 Sulfate 5.2.2.2 Chloride 5.2.2.3 Metallic impurities 5.2.2.4 Nitrite 5.2.3 Chemical parameters 5.2.3.1 Determination of antimony (Sb), arsenic (As), cadmium (Cd), chromium (Cr), lead (Pb), mercury (Hg), nickel (Ni) and selenium (Se) <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | 6 Labelling – transportation – storage 6.1 Means of delivery 6.2 Labelling in accordance with the EU legislation ) <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | 6.3 Transportation regulations and labelling 6.4 Marking <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | 6.5 Storage 6.5.1 General 6.5.2 Long-term stability 6.5.3 Storage incompatibilities <\/td>\n<\/tr>\n | ||||||
| 18<\/td>\n | Annex\u00a0A (informative)General information on silver salts A.1 General A.1.1 Manufacture A.1.2 Effect A.1.3 Application <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | A.2 Use A.2.1 Form in which it is used A.2.2 Treatment dose A.2.3 Means of application A.2.4 Secondary effects <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | Annex\u00a0B (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 B.2.3 Fire <\/td>\n<\/tr>\n | ||||||
| 21<\/td>\n | Annex\u00a0C (informative)Environmental, health and safety precautions within the chemical laboratory <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Chemicals used for treatment of water intended for human consumption. Silver salts for intermittent use<\/b><\/p>\n |