1、BRITISH STANDARD BS4405:1990 Specification for Liquid soapBS4405:1990 This British Standard, having been prepared under the directionof the Chemicals Standards Policy Committee, waspublished under the authorityof the Board of BSI andcomes into effect on 31October1990 BSI08-1999 First published Janua
2、ry1969 Second edition July1985 Third edition October1990 The following BSI references relate to the work on this standard: Committee reference CIC/34 Draft for comment89/55508 DC ISBN 0 580 18724 1 Committees responsible for this British Standard The preparation of this British Standard was entruste
3、d by the Chemicals Standards Policy Committee (CIC/-) to Technical Committee CIC/34, upon which the following bodies were represented: Chemical Industries Association Chemical Industries Association (GOSIP) Consumer Policy Committee of BSI Department of Trade and Industry (Laboratory of the Governme
4、nt Chemist) Ministry of Defence Royal Society of Chemistry Soap and Detergent Industry Association Society of Dyers and Colourists Amendments issued since publication Amd. No. Date CommentsBS4405:1990 BSI 08-1999 i Contents Page Committees responsible Inside front cover Foreword ii 1 Scope 1 2 Prope
5、rties 1 Appendix A Determination of total fatty matter content 2 Appendix B Determination of total free alkali content 2 Table 1 Properties and test methods 1 Publication(s) referred to Inside back coverBS4405:1990 ii BSI 08-1999 Foreword This revision of BS4405 has been prepared under the direction
6、 of the Chemicals Standards Policy Committee. It supersedes the1985 edition of BS4405, which is withdrawn and from which it differs principally in that the references to test methods have been changed to take account of the partial revision of BS1715:1963, and that the requirement for rosin acids co
7、ntent has been deleted. This British Standard is one of a series dealing with various kinds of soap. Other standards in the series are as follows: BS1545, Specification for liquid toilet soap. BS1911, Specification for hard soap. BS1912, Specification for soap flakes. BS1913, Specification for soft
8、soap. BS1914, Specification for toilet soap. A British Standard does 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 obligatio
9、ns. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages1 and2, 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 in
10、side front cover.BS4405:1990 BSI 08-1999 1 1 Scope This British Standard specifies requirements and gives corresponding test methods for liquid soap for domestic and industrial purposes. NOTEThe titles of the publications referred to in this standard are listed on the inside back cover. 2 Properties
11、 2.1 Liquid soap shall consist essentially of an aqueous solution of potassium soaps, sodium soaps or both. It shall not contain non-aqueous solvents or synthetic detergents. 2.2 The content, of liquid soap shall be as given in Table 1 and2.3. Compliance shall be checked by the methods given in Tabl
12、e 1 and in accordance with2.3 using analysis samples prepared as described in BS1715-1. 2.3 Liquid soap shall not deposit sediment and shall show no gelling after being kept at3 1 C for24h. NOTELiquid Soap will absorb carbon dioxide from the air and lose water by evaporation. These factors may affec
13、t, in particular the behaviour of the soap on chilling. Table 1 Properties and test methods Property Content Test method 1. Total fatty matter content min. 2. Total free alkali content (K 2 O) max. % (m/m) 10 0.04 Described in BS1715-2.1 and Appendix A of this standard Described in BS1715-2.2 and Ap
14、pendix B of this standard NOTEThe fatty matter in liquid soap usually contains more than20% of fatty acids of relative molecular mass200 or below.BS4405:1990 2 BSI 08-1999 Appendix A Determination of total fatty matter content Use the method described in BS1715-2.1 except that the procedure for the
15、test portion given in8.1 of BS1715-2.1:1989 should be replaced by the following. Weigh, to the nearest0.01g, about20g of the laboratory sample into a stoppered weighing bottle. In8.2 of BS1715-2.1:1989 the first two sentences should be replaced by the following. Transfer the test portion (see8.1 of
16、BS1715-2.1:1989) quantitatively to one of the separating funnels (see6.2 of BS1715-2.1:1989) using about120mL of water. Appendix B Determination of total free alkali content Use the method described in BS1715-2.2 except that the procedure for the test portion given in8.1 of BS1715-2.2:1989 should be
17、 replaced by the following. Weigh, to the nearest0.1g, about10g of the laboratory sample into the conical flask (see6.1 of BS1715-2.2:1989). In9.1 of BS1715-2.2:1989, the calculation and formulae should be replaced by the following. The total free alkali content, expressed as a percentage by mass of
18、 K 2 O, is given by the formula: where m is the mass of the test portion (in g); V 0 is the volume of the sulphuric acid solution (see5.2 of BS1715-2.2:1989) used in the determination (in mL); V 1 is the volume of the potassium hydroxide solution (see5.3 of BS1715-2.2:1989) used in the titration (in
19、 mL); T 0 is the exact amount-of-substance concentration of the sulphuric acid solution (see5.2 of BS1715-2.2:1989) (inmol/L); T 1 is the exact amount-of-substance concentration of the potassium hydroxide solution (see5.3 of BS1715-2.2:1989) used in the titration (in mol/L).BS4405:1990 BSI 08-1999 P
20、ublication(s) referred to BS1545, Specification for liquid toilet soap 1) . BS1715, Analysis of soaps. BS1715-1, General introduction, sampling, and test for presence of synthetic anionic-active surface active agents. BS1715-2.1, Method for determination of total alkali content and total fatty matte
21、r content. BS1715-2.2, Method for determination of total free alkali content. BS1911, Specification for hard soap 1) . BS1912, Specification for soap flakes 1) . BS1913, Specification for soft soap 1) . BS1914, Specification for toilet soap 1) . 1) Referred to in the foreword only.BS4405:1990 BSI 38
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