1、BRITISH STANDARD BS1545:1990 Specification for Liquid toilet soapBS1545:1990 This British Standard, having been prepared under the directionof the Chemicals Standards Policy Committee, waspublished under the authorityof the Board ofBSIandcomes into effect on 31 October1990 BSI11-1999 First published
2、 April1949 Second edition January1969 Third edition October1990 The following BSI references relate to the work on this standard: Committee reference CIC/34 Draft for comment89/55503DC ISBN 0 580 18727 6 Committees responsible for this British Standard The preparation of this British Standard was en
3、trusted 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 Go
4、vernment 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 CommentsBS1545:1990 BSI 11-1999 i Contents Page Committees responsible Inside front cover Foreword ii 1 Scope 1 2
5、 Properties 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 Publications referred to Inside back coverBS1545:1990 ii BSI 11-1999 Foreword This revision of BS1545 has been prepared under the direc
6、tion of the Chemicals Standards Policy Committee. It supersedes the1985 edition of BS1545, which is withdrawn and from which it differs principally in that the references to test methods have been changed to take account of the partial revision of BS1715:1963, and that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 acid
7、s content 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: BS1911, Specification for hard soap. BS1912, Specification for soap flakes. BS1913, Specification for soft soap. BS1914, Specification for toilet soa
8、p. BS4405, Specification for liquid 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 obligations.
9、 Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, pages1and2, 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 f
10、ront cover.BS1545:1990 BSI 11-1999 1 1 Scope This British Standard specifies requirements and gives corresponding test methods for liquid toilet soap of an unmedicated nature. It does not deal with types for specific purposes, e.g.for surgical use. NOTEThe titles of the publications referred to in t
11、his standard are listed on the inside back cover. 2 Properties 2.1 Liquid toilet 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. NOTEIt may contain perfume, non-toxic colouring matter,
12、 or both. 2.2 The content of liquid toilet soap shall be as given in Table 1 and2.3. Compliance shall be checked by the methods given in Table 1 and in accordance with2.3 using analysis samples prepared as described in BS1715-1. 2.3 Liquid toilet soap shall not deposit sediment and shall show no gel
13、ling after being kept at3 1 C for24h. NOTELiquid soap will absorb carbon dioxide from the air and lose water by evaporation. These factors may affect, in particular, the behaviour of the soap on chilling. Table 1 Properties and test methods Property Content Test method 1. Total fatty mattercontent m
14、in. 2. Total free alkali content (K 2 O), max. % (m/m) 15.0 0.03 Described in BS1715-2.1 and Appendix A of this standard Described in BS1715-2.2 and Appendix B of this standardBS1545:1990 2 BSI 11-1999 Appendix A Determination of total fatty matter content Use the method described in BS1715-2.1 exce
15、pt that the procedure for the 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. Transf
16、er the test portion (see8.1 of BS1715-2.1:1989) quantitatively to one of the separating funnels (see6.2 of BS1715-2.1:1989) using about12mL 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.
17、1 of BS1715-2.2:1989 should be 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, expres
18、sed as a percentage by mass of 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 BS1715-2.2:1
19、989) used in the titration (in mL); T 0 is the exact amount-of-substance concentration of the sulphuric acid solution (see5.2: Section 2.2:1989) (in mol/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 mo
20、l/L). 0.047 V 0 T 0 V 1 T 1 m - 100 BS1545:1990 BSI 11-1999 Publications referred to 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 fa
21、tty matter content. BS1715-2.2, Method for determination of free caustic 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) . BS4405, Specification for liquid soap 1) .
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