1、BRITISH STANDARD BS 5598-8: 1980 ISO 5789:1979 Methods of sampling and test for halogenated hydrocarbons Part 8: Determination of non-volatile residue in fluorinated hydrocarbons ISO title: Fluorinated hydrocarbons for industrial use Determination of non-volatile residue UDC 661.723 16:547.411:543.8
2、14BS5598-8:1980 This British Standard, having been prepared under the directionof the Chemicals Standards Committee, waspublished under the authorityof the Executive Boardand came into effect on 31January1980 BSI 11-1999 The following BSI references relate to the work on this standard: Committee ref
3、erence CIC/4 Draft for comment 77/55063 DC ISBN 0 580 11123 7 Cooperating organizations The Chemicals Standards Committee, under whose direction this BritishStandard was prepared, consists of representatives from the following Government departments and scientific and industrial organizations: Assoc
4、iation of Fatty Acid Distillers British Tar Industry Association Chemical Industries Association* Chemical Society, Analytical Division Department of Health and Social Security Department of Industry: Laboratory of the Government Chemist Fertiliser Manufacturers Association Ltd. Hydrocarbon Solvents
5、 Association Ministry of Agriculture, Fisheries and Food Ministry of Defence* National Sulphuric Acid Association Paintmakers Association of Great Britain Ltd. Royal Institute of Public Health and Hygiene Soap and Detergent Industry Association Standardization of Tar Products Tests Committee The org
6、anizations marked with an asterisk in the above list, together with the following, were directly represented on the committee entrusted with the preparation of this British Standard: British Plastics Federation Fabric Care Research Association Fire Extinguishing Trades Association Institute of Metal
7、 Finishing Institute of Refrigeration Oil and Colour Chemists Association Pharmaceutical Society of Great Britain Royal Institute of Chemistry Society of Chemical Industry Individual companies Amendments issued since publication Amd. No. Date of issue CommentsBS5598-8:1980 BSI 11-1999 i Contents Pag
8、e Cooperating organizations Inside front cover National foreword ii 1 Scope and field of application 1 2 Reference 1 3 Principle 1 4 Apparatus 1 5 Procedure 1 6 Expression of results 1 7 Test report 1 Figure Apparatus for determination of non-volatile residueoffluorinatedhydrocarbons 2 Publications
9、referred to Inside back coverBS5598-8:1980 ii BSI 11-1999 National foreword This British Standard has been prepared under the direction of the Chemicals Standards Committee in order to provide methods of sampling and test for halogenated hydrocarbons. For some years the UnitedKingdom has participate
10、d in the work of preparing methods of sampling and test applicable to halogenated hydrocarbons for industrial use, organized by Sub-committee12, Halogenated hydrocarbons and amines, of Technical Committee47, Chemistry, of the International Organization for Standardization (ISO). As international agr
11、eement is reached on the methods, they are being published as Parts of this British Standard as follows: Part 1: Sampling liquid products, identical with ISO2209; Part 2: Sampling of liquefied gases, identical with ISO3427; Part 3: Determination of residue on evaporation, identical with ISO2210; Par
12、t 4: Determination of acidity Titrimetric method, identical with ISO1393; Part 5: Determination of cloud point, identical with ISO1394; Part 6: Determination of acidity of fluorochlorinated hydrocarbons, identical with ISO3363; Part 7: Methods of test for methyl chloride and ethyl chloride, identica
13、l with ISO5781 1) ; Part 8: Determination of non-volatile residue in fluorinated hydrocarbons, identical with ISO5789. Terminology and conventions. The text of the International Standard has been approved as suitable for publication, without deviation, as a BritishStandard. Some terminology and cert
14、ain conventions are not identical with those used in British Standards; attention is especially drawn to the following. The comma has been used throughout as a decimal marker. In British Standards it is current practice to use a full point on the baseline as the decimal marker. Wherever the words “I
15、nternational Standard” appear, referring to this standard, they should be read as “British Standard”. Additional information WARNING NOTE. Care should be taken to avoid breathing the vapour of halogenated hydrocarbons. All operations likely to produce an appreciable concentration in the atmosphere s
16、hould be conducted under a hood with an adequate exhaust. This standard specifies a method of test only and should not be referred to as a specification defining limits of purity. Reference to the standard should be in the form of words indicating that the method of test used conforms to the require
17、ments of BS5598-8. 1) In course of preparation. Cross-reference International Standard Corresponding British Standard ISO 3427:1976 BS5598 Methods of sampling and test for halogenated hydrocarbons Part 2:1979 Sampling of liquefied gases (Identical)BS5598-8:1980 BSI 11-1999 iii A British Standard doe
18、s not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an insi
19、de front cover, pages i to iv, pages1and 2, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.iv blankBS5598-8:1980 BSI 11-1999 1 1 Scope and fie
20、ld of application This International Standard specifies a method for the determination of the non-volatile residue of fluorinated hydrocarbons for industrial use. 2 Reference ISO 3427, Gaseous halogenated hydrocarbons (liquefied gases) Taking of a sample. 3 Principle Evaporation of a test portion un
21、der specified conditions, using special apparatus, and weighing of the residue after evaporation. 4 Apparatus Ordinary laboratory apparatus and 4.1 Jacketed glass container, with ground glass stopper, and a graduation line marking a capacity of500ml. (See the Figure.) NOTEDo not use grease in ensuri
22、ng that the ground glass joints are leak-proof. 4.2 Detachable element, with a ground glass joint. (See the Figure.) 4.3 Electric oven, capable of being controlled at105 2 C. 4.4 Heating device (water bath, small electric oven or heating tape). 5 Procedure Dry the detachable element (4.2), in the el
23、ectric oven (4.3), controlled at105 2 C, for30min, allow to cool in a desiccator, weigh to the nearest0,0001g and connect it to the glass container (4.1). Weigh, to the nearest1g, the cylinder containing the sample (see ISO3427). Fill the apparatus to the500ml graduation line with the liquid sample
24、and reweigh the cylinder to the nearest1g. Determine the mass of the test portion by difference. By means of the heating device (4.4), heat the detachable element (4.2) uniformly in such a way that the evaporation of the test portion is completed in1,5 to2h. Stop heating, dry the detachable element
25、in the electric oven (4.3), controlled at105 2 C, for30min, allow to cool in a desiccator and reweigh to the nearest0,0001g. The increase in mass corresponds to the non-volatile residue of the test portion. 6 Expression of results The non-volatile residue, expressed in milligrams per kilogram, is gi
26、ven by the formula where NOTE500ml of sample corresponds to 740g of trichlorofluoromethane (CCl 3 F) 745g of dichlorodifluoromethane (CCl 2 F 2 ) 705g of chlorodifluoromethane (CHClF 2 ) 7 Test report The test report shall include the following particulars: a) an identification of the sample; b) the
27、 reference of the method used; c) the results and the method of expression used; d) any unusual features noted during the determination; e) any operation not included in this International Standard or in the International Standard to which reference is made, or regarded as optional. m 0 is the mass,
28、 in grams, of the test portion; m 1 is the mass, in milligrams, of the non-volatile residue weighed. 1 000 m 1 m 0 -BS5598-8:1980 2 BSI 11-1999 Figure Apparatus for determination of non-volatile residue of fluorinated hydrocarbonsBS5598-8:1980 BSI 11-1999 Publications referred to See national forewo
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