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EAS 186:2011
ICS 71.100.70
EAST AFRICAN COMMUNITY
© EAC 2011
Second Edition 2011
iDevelopment of the East African Standards has been necessitated by the need for harmonizing requirements governing quality of products and services in East Africa. It is envisaged that through harmonized standardization, trade barriers which are encountered when goods and services are exchanged within the Community will be removed.
In order to achieve this objective, the partner states in the Community through their National Bureaux of Standards, have established an East African Standards Committee.
The committee is composed of representatives of the National Standards Bodies in partner states, together with the representatives from the private sectors and consumer organizations. Draft East African Standards are circulated to stakeholders through the National Standards Bodies in the partner states. The comments received are discussed and incorporated before finalization of standards, in accordance with the procedures of the Community.
East African Standards are subject to review, to keep pace with technological advances. Users of the East African Standards are therefore expected to ensure that they always have the latest versions of the standards they are implementing.
© East African Community 2011 — All rights reserved*
East African Community
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Arusha
Tanzania
Tel: 255 27 2504253/8
Fax: 255-27-2504481/2504255
E-Mail: eac@eachq.org
Web: www.each.org
* © 2011 EAC — All rights of exploitation in any form and by any means reserved worldwide for EAC Partner States’ NSBs.
iiThis East African Standard has been prepared because of the need for standardizing the different types of toilet soaps being manufactured in the region. It is hoped that the standard will assist the production of toilet soaps of well defined types and thus ensure their quality to purchasers within the East African region. This East African Standard has been produced to guide manufacturers, importers and consumers on the quality of toilet soaps.
iii ivToilet soap -Specification
This East African Standard specifies requirements for toilet soap. It does not apply to carbolic soap or specialty soaps such as medicated soap, transparent soap, floating soap, liquid soap or sea-water soap.
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.
ISO 457, Analysis of soap — Determination of Chloride content — Titrimetric method
ISO 456, Surface active agents - Analysis of soaps— Determination of free caustic alkali
ISO 684, Analysis of soap — Determination of Total free alkali
ISO 685, Analysis of soap — Determination of alkali content and total fatty matter content
ISO 673, Analysis of soap — Determination of ethanol insoluble matter
ISO 862: Surface active agents - Vocabulary
ISO 1067, Analysis of soap — Determination of unsaponifiable, unsaponified and unsaponified saponfiable matter
For the purposes of this standard terms and definitions specified under ISO 862 and the followingshall apply.
The product formed by the saponification or neutralization of fats, oils, waxes, rosins or their acids with organic or inorganic bases.
A soap which is intended for use in bathing.
A chemical reaction permitting the separation of an ester into its constituent parts, acid and alcohol, or possibly phenol, by the action of a base, with the formation of a salt from the acid. Saponification of fats produces soap.
Any dyestuff that may be used to colour toilet soap.
It is the free (uncombined) caustic alkali present in a soap.
1Includes either the water-insoluble or ether soluble fatty matter under the specified conditions of test.
The sum of the free caustic alkali and the free carbonate alkali contents.
Toilet soap shall be firm and of uniform texture and colour and shall be free from objectionable (disagreeable) odour.
It shall not cause skin irritation and shall have good lathering and cleansing properties. All ingredients used in the product shall be non-injurious to health. Perfumes and, colouring matter may be added.
Toilet soap shall remain hard and smooth and shall also not crumble when tested in accordance with Annex A.
The toilet soap shall comply with the requirements specified in Table 1.
| Characteristic | Requirement | Method of test |
|---|---|---|
| Total free alkali content as Na2O, % by mass, max | 0.2 | ISO 684 |
| Total fatty matter content, % by mass, min | 76.0 | ISO 685 |
| Content of matter insoluble in ethanol, % by mass, max | 2 | ISO 673 |
| Free caustic alkali content as NaOH, % by mass, max | 0.1 | ISO 456 |
| Free fatty acids content as oleic acid, % by mass, max | 0.3 | - |
| Chlorides content as NaCI, % by mass, max | 0.8 | ISO 457 |
| Unsaponified fatty matter content, % by mass, max | 0.5 | ISO 1067 |
|
NOTE Allowance should be made for the loss of moisture of the soap on storage. The results for each of the above-specified methods of test shall be corrected in relation to the specified minimum total fatty matter by means of the equation:
The corrected results shall be used to determine whether the product is up to standard. |
||
The soap cakes shall be suitably wrapped to protect them from damage.
Each wrapped cake of toilet soap shall be marked with the following:
In a single consignment, all packages (cartons) containing toilet soap cakes drawn from the same batch of production shall constitute a lot. For ascertaining the conformity of the lot to the requirements of this standard, tests shall be carried out on each lot separately. The number of packages to be selected for drawing the sample shall be in accordance with Table 2.
| Number of packages (cartons) in the lot N |
Number of packages (cartons) to be selected N |
|---|---|
| 4 to 15 16 to 40 41 to 65 66 to 110 111 and above |
3 4 5 7 10 |
The packages shall be selected at random, using tables of random numbers. If these are not available, the following procedure shall be applied:
Starting from any package, count all the packages in one order as 1, 2, 3…. N, selecting every k th package, where k is the integral part of N ÷ n.
From each package thus selected, draw at random an equal number of cakes so as to obtain a total mass of at least 2 kg.
Inspect the cakes selected for compliance with the requirements of 6.1
Weigh each cake separately (including any material that may have adhered to the wrapper), and calculate the average mass. Keep one cake for the test in 4.1.3. Cut each of the remaining cakes into
3eight parts by means of three cuts at right angles to each other through the middle. Grate finely the whole of two diagonally opposite eighths of each specimen. Mix the gratings and place in a clean, dry, airtight glass container.
Immediately after, take at one time all test samples required for the tests in 4.2. Weigh out last the test sample required for determination of free alkali or acid content, and use it immediately.
The lot shall be deemed to comply with the requirements of this standard if, after inspection and testing, the requirements of clause 4 are satisfied.
4 5(Normative)
When immersed in 1 L of distilled water for 1 h at 25 °C – 30 °C, Toilet soap shall not show signs of disintegration, and when dried at room temperature for 25 h thereafter, it shall not crumble, crack or break
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