1、BSI Standards PublicationBS ISO 18473-2:2015Functional pigments andextenders for specialapplicationsPart 2: Nanoscale titanium dioxide forsunscreen applicationBS ISO 18473-2:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 18473-2:2015.The UK participation
2、in its preparation was entrusted to TechnicalCommittee STI/1, Pigments.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplica
3、tion. The British Standards Institution 2015. Published by BSI StandardsLimited 2015ISBN 978 0 580 86237 3ICS 87.060.10Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee
4、 on 31 August 2015.Amendments issued since publicationDate Text affectedBS ISO 18473-2:2015 ISO 2015Functional pigments and extenders for special applications Part 2: Nanoscale titanium dioxide for sunscreen applicationPigments et matires de charges fonctionnels pour applications spciales Partie 2:
5、Dioxyde de titane nanomtrique pour protections solairesINTERNATIONAL STANDARDISO18473-2First edition2015-08-15Reference numberISO 18473-2:2015(E)BS ISO 18473-2:2015ISO 18473-2:2015(E)ii ISO 2015 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2015, Published in SwitzerlandAll rights reserved. Un
6、less otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the
7、 address below or ISOs member body in the country of the requester.ISO copyright officeCh. de Blandonnet 8 CP 401CH-1214 Vernier, Geneva, SwitzerlandTel. +41 22 749 01 11Fax +41 22 749 09 47copyrightiso.orgwww.iso.orgBS ISO 18473-2:2015ISO 18473-2:2015(E)Foreword ivIntroduction v1 Scope . 12 Normati
8、ve references 13 Classification 14 Requirements and test methods 15 Sampling 26 Marking and label 27 Test report . 3 ISO 2015 All rights reserved iiiContents PageBS ISO 18473-2:2015ISO 18473-2:2015(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of nation
9、al standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. Internatio
10、nal organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended
11、for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.
12、org/directives).Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will b
13、e in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents).Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions
14、 related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary informationThe committee responsible for this document is ISO/TC 256, Pigments, dyestuffs and extenders.ISO 18
15、473 consists of the following parts, under the general title Functional pigments and extenders for special applications: Part 1: Nanoscale calcium carbonate for sealant application Part 2: Nanoscale titanium dioxide for sunscreen applicationiv ISO 2015 All rights reservedBS ISO 18473-2:2015ISO 18473
16、-2:2015(E)IntroductionThe UV radiation of sunlight has great harm to the skin. Overmuch exposure in UV radiation will cause erythema and black spot, age the skin, and can even cause skin carcinoma. Sunscreens, which include UV blockers, are thus applied to skin to provide UV protection. Among them i
17、s titanium dioxide which has been used for decades as UV attenuator in sunscreens. Its attenuation is the combined effect of absorbing and scattering incident light. Compared with the pigmentary titanium dioxide, nanoscale titanium dioxide in the same dosage shows higher attenuation property in UV r
18、egion, and thus provides superior UV protection. Furthermore, nanoscale titanium dioxide in sunscreen, when applied onto skin, maintains a high level of transparency because of its small size. Therefore, nanoscale titanium dioxide is rapidly, widely applied and becomes one of the most excellent inor
19、ganic ultraviolet resistant substances in sunscreen nowadays.Although nanoscale titanium dioxide is commercially used in many sunscreen brands, its properties relevant to sunscreen application are not well defined which even causes misunderstanding among buyers and suppliers. In order to facilitate
20、sound trading and technical transfer, the base for agreement on the characteristics of nanoscale titanium dioxide is to be established and shared by the stakeholders. The purpose of this part of ISO 18473 is to specify the requirements and corresponding test methods for sunscreen application of nano
21、scale titanium dioxide. ISO 2015 All rights reserved vBS ISO 18473-2:2015BS ISO 18473-2:2015Functional pigments and extenders for special applications Part 2: Nanoscale titanium dioxide for sunscreen application1 ScopeThis part of ISO 18473 specifies requirements and corresponding methods of test fo
22、r nanoscale titanium dioxide in powder form for sunscreen application. This part of ISO 18473 covers the surface modified, TiO2.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated referen
23、ces, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 591-1, Titanium dioxide pigments for paints Part 1: Specifications and methods of testISO 787-2, General methods of test for pigments and extenders Part 2
24、: Determination of matter volatile at 105 CISO 2859 (all parts), Sampling procedures for inspection by attributesISO 3262-1, Extenders for paints Specifications and methods of test Part 1: Introduction and general test methodsISO 9277, Determination of the specific surface area of solids by gas adso
25、rption BET method3 ClassificationNanoscale titanium dioxide is classified into several different types based on crystal structure.For sunscreen application, the crystal types are determined by X-ray examination and the main component can be anatase-type or rutile-type.4 Requirements and test methods
26、Nanoscale titanium dioxide applied for industrial use of sunscreen shall comply with the requirements specified in Table 1.INTERNATIONAL STANDARD ISO 18473-2:2015(E) ISO 2015 All rights reserved 1BS ISO 18473-2:2015ISO 18473-2:2015(E)Table 1 Requirements for use in sunscreenCharacteristic Unit Requi
27、rement Test methodMedian primary particle sizeanm 100To be agreed between the interested parties:TEMbor DLScmethodSpecific surface area (BET)dm2/g 15, if applicable ISO 9277Mass fraction of titanium dioxide% (by mass) 70 ISO 591-1Crystal structure Rutile or anatase (main component)XRDaHg % (by mass)
28、Subject to relevant legislative requirementsSubject to relevant legislative requirementsPb % (by mass)Subject to relevant legislative requirementsSubject to relevant legislative requirementsAs % (by mass)Subject to relevant legislative requirementsSubject to relevant legislative requirementsMoisture
29、 % (by mass)To be agreed between the interested partiesISO 787-2Loss on ignition To be agreed between the interested partiesISO 3262-1NOTE The agents used as surface modifier for TiO2could be agreed between the interested parties, if necessary.aIn the case of surface modification, the primary partic
30、le size refers only to TiO2particle not including the surface modification layer.bTEM Transmission electron microscopy.cDLS Dynamic light scattering.dBET BrunauerEmmettTeller.5 SamplingObtaining a representative sample of an industrial powdered product is subject to lot variation and separation by p
31、article size during handling and packaging. For more information about the sampling procedures, refer to ISO 2859.6 Marking and labelThe outer packing shall clearly mark in a visible location the manufacturer name and address, product name, type, brand, net weight and batch number or production date
32、, this ISO standard number, and a “store dry” mark.2 ISO 2015 All rights reservedBS ISO 18473-2:2015ISO 18473-2:2015(E)7 Test reportThe test report shall contain at least the following information:a) all information necessary to completely identify the product tested;b) a reference to this part of I
33、SO 18473, i.e. ISO 18473-2;c) the results of the test, the method used where a choice is available, and whether or not the product complies with the relevant specification limits;d) any deviation from the method of test specified;e) the date of the test and place. ISO 2015 All rights reserved 3BS IS
34、O 18473-2:2015ISO 18473-2:2015(E) ISO 2015 All rights reservedICS 87.060.10Price based on 3 pagesThis page deliberately left blankBSI is the national body responsible for preparing British Standards and other standards-related publications, information and services.BSI is incorporated by Royal Chart
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