BS EN 1405-2009 人生活用水的水处理用化学物质.藻酸钠.pdf
《BS EN 1405-2009 人生活用水的水处理用化学物质.藻酸钠.pdf》由会员分享,可在线阅读,更多相关《BS EN 1405-2009 人生活用水的水处理用化学物质.藻酸钠.pdf(22页珍藏版)》请在三一文库上搜索。
1、 W - - - - - - - - - -7- -7 - - - $ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - W W D - w - - - - EN 1405:2009 (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 form .6 3.3 Physical properti
2、es 6 3.4 Chemical properties 7 4 Purity criteria 7 4.1 General 7 4.2 Composition of commercial product .8 4.3 Impurities and main by-products .8 4.4 Chemical Parameters 8 5 Test methods 8 5.1 Sampling .8 5.2 Analyses .8 6 Labelling - Transportation - Storage . 14 6.1 Means of delivery 14 6.2 Risk an
3、d safety labelling in accordance with the EU Directives . 14 6.3 Transportation regulations and labelling . 14 6.4 Marking 14 6.5 Storage . 15 Annex A (informative) General information on sodium alginate . 16 A.1 Origin . 16 A.2 Use . 16 A.3 Rules for safe handling and use . 17 A.4 Emergency procedu
4、res 17 Bibliography . 19 EN 1405:2009 (E) 3 Foreword This document (EN 1405:2009) 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 identi
5、cal text or by endorsement, at the latest by February 2010, and conflicting national standards shall be withdrawn at the latest by February 2010. 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
6、 responsible for identifying any or all such patent rights. This document supersedes EN 1405:1998. Annex A is informative and gives some information on origin, use and handling of sodium alginate. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the followin
7、g 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, Sloveni
8、a, Spain, Sweden, Switzerland and the United Kingdom. EN 1405:2009 (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: 1) This standard provides no information as to whether the product may
9、 be used without restriction in any of the Member States of the EU or EFTA; 2) 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 this
10、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. WARNING The use of this standard may involve hazardous substanc
11、es, materials, operations and equipment. This standard does not purport to address all the safety aspects associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prio
12、r to use. EN 1405:2009 (E) 5 1 Scope This European standard is applicable to sodium alginate used for treatment of water intended for human consumption. It describes the characteristics of sodium alginate and specifies the requirements and the corresponding test methods for sodium alginate. 2 Normat
13、ive 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 ISO 3696, Water for analytical
14、laboratory use Specification and test methods (ISO 3696:1987) ISO 3165, Sampling of chemical products for industrial use Safety in sampling ISO 6206, Chemical products for industrial use Sampling Vocabulary ISO 8213, Chemical products for industrial use Sampling techniques Solid chemical products in
15、 the form of particles varying from powders to coarse lumps 3 Description 3.1 Identification 3.1.1 Chemical name Sodium alginate NOTE Linear glycuronoglycan consisting mainly of (1-4) linked -D-mannuronic acid units and (1-4) linked -L- guluronic acid units in pyranose ring form. 3.1.2 Synonym or co
16、mmon name Algin. 3.1.3 Relative molecular mass 10 000 to 250 000 approximately. 3.1.4 Empirical formula (C6O6H7Na) n. EN 1405:2009 (E) 6 3.1.5 Chemical formula Sodium alginate (with D-mannuronic acid units) 3.1.6 CAS Registry Number1) 9005-38-3. 3.1.7 EINECS reference2) The EINECS inventory lists al
17、ginic acid, but does not apply numbers to the salts of alginic acid. The EINECS number for alginic acid is 232-68-01. 3.2 Commercial form Sodium alginate as specified in this standard is available as a solid containing a small amount of residual moisture. 3.3 Physical properties 3.3.1 Appearance The
18、 product is a white to pale yellowish-brown powder. 3.3.2 Density The bulk density of the product is typically in the range 0,7 g/cm3 to 1,0 g/cm3. 3.3.3 Solubility The product is soluble in hot or cold water. Its solubility is limited only by viscosity, with a paste being formed at concentrations o
19、f approximately 50 g/l and above. 3.3.4 Vapour pressure Not applicable. 3.3.5 Boiling point at 100 kPa Not applicable. 1) Chemical Abstracts Service Registry Number. 2) European Inventory of Existing Commercial Chemical Substances. EN 1405:2009 (E) 7 3.3.6 Melting point The product decomposes at app
20、roximately 200 C. 3.3.7 Specific heat Not applicable. 3.3.8 Viscosity, dynamic Not applicable. 3.3.9 Critical temperature Not applicable. 3.3.10 Critical pressure Not applicable. 3.3.11 Physical hardness Not applicable. 3.4 Chemical properties Sodium alginate is a non-hazardous material and not intr
21、insically reactive. However, in common with many other organic compounds, a strong exothermic reaction will occur if it is brought into contact in the dry state with a strong oxidizing agent or strong acid. NOTE In dilute solution there can be a reaction with, or destruction by, some of the disinfec
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- BS EN 1405-2009 人生活用水的水处理用化学物质.藻酸钠 1405 2009 人生 活用 水处理 化学物质 藻酸钠
链接地址:https://www.31doc.com/p-3643768.html