SIST EN 4503:2014
(Main)Aerospace series - Non-metallic materials - Textiles - Test method - Determination of water soluble chloride and sulfate of aqueous extracts
Aerospace series - Non-metallic materials - Textiles - Test method - Determination of water soluble chloride and sulfate of aqueous extracts
This standard specifies the determination of water soluble chloride and sulphate of aqueous extracts of textile materials.
This method has been written in response to an aerospace requirement for a method of extraction using hot water, this method should be used in conjunction with EN 4426.
Luft- und Raumfahrt - Nichtmetallische Werkstoffe - Textilien - Prüfverfahren - Bestimmung von wasserlöslichem Chlorid und Sulfat in wässerigen Lösungen
Série aérospatiale - Matériaux non-métalliques - Textiles - Méthode d'essai - Détermination des chlorures et des sulfates des résidus aqueux
Aeronavtika - Nekovinski materiali - Tekstilije - Preskusne metode - Določanje vodotopnega klorida in sulfata v vodni raztopini
General Information
Overview
EN 4503:2013 is a CEN aerospace standard specifying a laboratory test method for the determination of water‑soluble chloride and sulfate in aqueous extracts of textile materials. Written for aerospace material control, the method uses a hot‑water extraction and is intended to be used in conjunction with EN 4426 (determination of conductivity and pH of aqueous extracts). EN 4503 forms part of the EN non‑metallic materials series for aerospace applications.
Key topics and technical requirements
- Scope: Measures water‑soluble Cl− and SO4²− that may promote acidic conditions and detrimentally affect fabric ageing and corrosion.
- Extraction technique: Hot‑water extraction - nominal liquor ratio 1:20 (example: 5.0 g specimen with 100 ml distilled/deionized water), boiled gently for 60 minutes, cooled to (20 ± 2) °C. Use distilled/deionized water conforming to EN ISO 3696.
- Sample conditioning: Standard atmosphere (65 ± 2)% r.h., (20 ± 2) °C per EN 20139.
- Analysis methods:
- Chloride
- Gravimetric precipitation with silver nitrate and weighing of AgCl (drying to constant mass; drying stages noted 100 °C then 130–150 °C).
- Volumetric titration using AgNO3 with an Ag/AgOx reference half‑cell and mV endpoint detection.
- Reporting options include chloride ion or expressed as NaCl.
- Calculation factors provided for yarns/fabrics and for felts/loose fibres/wool.
- Sulfate
- Gravimetric precipitation as barium sulfate by addition of hot barium chloride, filtration, ignition/ashing to constant mass (final heating 800–900 °C).
- Reporting options include sulfate ion or expressed as anhydrous Na2SO4.
- Chloride
- Apparatus/reagents: Specified glassware (ISO 383), sintered filters (ISO 4793), pH/mV meter and Ag half‑cell, analytical balance (0.0002 g), AgNO3 solutions, barium chloride, acids, and silver oxalate suspension.
- Reporting: Test report must reference EN 4503, sample ID, chloride/sulfate results, operator traceability, date, and any deviations.
Applications and users
- Primary users: Aerospace materials engineers, textile test laboratories, quality assurance teams, suppliers and procurement for aerospace textile components.
- Practical uses:
- Detecting corrosive soluble residues on textile components (seat covers, insulation, harness fabrics) that can affect ageing, bonding or nearby metallic parts.
- Batch release testing, supplier qualification and incoming inspection of non‑metallic textile materials for aircraft interiors and systems.
- Supporting failure analysis where contaminant‑driven degradation is suspected.
- Value: Provides repeatable, traceable measurement of soluble ionic contaminants to support material compatibility and long‑term performance in aerospace environments.
Related standards
- EN 4426 - Determination of conductivity and pH of aqueous extracts (use in conjunction)
- EN 4385 - Organisation of aerospace non‑metallic material standards
- EN ISO 3696 - Water for analytical laboratory use
- EN 20139 - Standard atmosphere for conditioning and testing
Keywords: EN 4503, aerospace standard, water soluble chloride, water soluble sulfate, textile extract, hot water extraction, gravimetric analysis, volumetric titration, CEN, EN 4426.
Frequently Asked Questions
SIST EN 4503:2014 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Aerospace series - Non-metallic materials - Textiles - Test method - Determination of water soluble chloride and sulfate of aqueous extracts". This standard covers: This standard specifies the determination of water soluble chloride and sulphate of aqueous extracts of textile materials. This method has been written in response to an aerospace requirement for a method of extraction using hot water, this method should be used in conjunction with EN 4426.
This standard specifies the determination of water soluble chloride and sulphate of aqueous extracts of textile materials. This method has been written in response to an aerospace requirement for a method of extraction using hot water, this method should be used in conjunction with EN 4426.
SIST EN 4503:2014 is classified under the following ICS (International Classification for Standards) categories: 49.025.60 - Textiles. The ICS classification helps identify the subject area and facilitates finding related standards.
You can purchase SIST EN 4503:2014 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of SIST standards.
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Luft- und Raumfahrt - Nichtmetallische Werkstoffe - Textilien - Prüfverfahren - Bestimmung von wasserlöslichem Chlorid und Sulfat in wässerigen LösungenSérie aérospatiale - Matériaux non-métalliques - Textiles - Méthode d'essai - Détermination des chlorures et des sulfates des résidus aqueuxAerospace series - Non-metallic materials - Textiles - Test method - Determination of water soluble chloride and sulfate of aqueous extracts49.025.60TekstilijeTextilesICS:Ta slovenski standard je istoveten z:EN 4503:2013SIST EN 4503:2014en01-februar-2014SIST EN 4503:2014SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 4503
July 2013 ICS 49.025.60 English Version
Aerospace series - Non-metallic materials - Textiles - Test method - Determination of water soluble chloride and sulfate of aqueous extracts
Série aérospatiale - Matériaux non-métalliques - Textiles - Méthode d'essai - Détermination des chlorures et des sulfates des résidus aqueux
Luft- und Raumfahrt - Nichtmetallische Werkstoffe - Textilien - Prüfverfahren - Bestimmung von wasserlöslichem Chlorid und Sulfat in wässerigen Lösungen This European Standard was approved by CEN on 8 May 2013.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 4503:2013: ESIST EN 4503:2014
1 Scope This European Standard specifies the determination of water soluble chloride and sulphate of aqueous extracts of textile materials. This method has been written in response to an aerospace requirement for a method of extraction using hot water, this method should be used in conjunction with EN 4426. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 4385, Aerospace series — Non-metallic materials – General organisation of standardization — Links between types of standards
EN 4426, Aerospace series — Non-metallic materials — Textiles — Test method — Determination of conductivity and pH of aqueous extracts 1)
EN 20139, Textiles — Standard atmospheres for conditioning and testing (ISO 139) EN ISO 3696, Water for analytical laboratory use — Specification and test methods (ISO 3696) ISO 383, Laboratory glassware — Interchangeable conical ground joints ISO 4793, Laboratory sintered (fritted) filters — Porosity grading, classification and designation 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 chloride free water soluble Cl− ion which could combine with free H+ ions to produce acidic conditions which would be detrimental to the ageing of fabrics 3.2 sulfates free water soluble SO4C ion which could combine with free H+ ions to produce acidic conditions which would be detrimental to the ageing of fabrics
1) Published as ASD-STAN Prestandard at the date of publication of this standard SIST EN 4503:2014
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