7309 OSI) International Standard INTE RNATIONAL ORGANIZATION FOR STANDARDIZATIONMEXAYHAPOAHAR OPTAHM3ALMH IO CTAHAAPTW3AUWMORGANISATION INTERNATIONALE DE NORMALISATION ANsI Internat Doc Seca! Road vehicles -. Hydraulic braking systems IsO reference petroleum base fluid Vehicules routiers - Freins hydrauliques -- Liquide /so de reference a base petroliere First edition - 1985-04-15 UDC 629.113-592.2 : 665.767 : 621.22 Ref. No. ISO 7309-1985 (E) ISO 7309-1985 (E) Descriptors : road vehicles, braking systems, hydraulic brakes, brake fluids, specifications, chemical composition. Price based on 1 page Copyr right International Organization for Standardization nsefrom IHS Not for Resale Foreword IsO (the Internationa! Organization for Standardization) is a worldwide federation of national 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. International organizations, govern- mental and non-governmental, in liaison with iSo, aiso take part in the work. Draft International Standards adopted by the technical committees are circuiated to the member bodies for approval before their acceptance as International Standards by the Iso Council. They are approved in accordance with ISO procedures requiring at least 75 % approval by the member bodies voting. International Standard ISO 7309 was prepared by Technical Committee ISO/TC 22, Road vehicles. International Organization for Standardization, 1985 Printed in Switzerland Copyright International Organization for Standardization ISO7309-1985 (E) INTERNATIONAL STANDARD Road vehicles Hydraulic braking systems ISO reference petroleum base fluid 3 Composition Scope and field of application 1 This International Standard specifies the composition and re- The composition of the Iso reference petroleum base fluid1) is quired characteristics of a reference fluid1) used for the testing given in table 1. of hydraulic braking systems and components mounted on Table 1 road vehicles. Composition Item Constituent % (m/m) 2 References 80 ± 1,2 Pentamers of hydrogenated propylene ISo 2592, Petroleum products - Determination of flash and Poly(alkyl methacrylate) 17 ± 1 2 fire points -- Cleveland open cup method. 1,4-di (t-butyloxy) benzene 0,5 ± 0,05 3 Tri(isopropylphenyl) phosphate 1 ± 0,1 Iso 3016, Petroleum oils - Determination of pour point. Anthraquinone green colouring (20 ± 2) × 10 ~ 4 5 Iso 3104, Petroleum products - Transparent and opaque li- (40 ± 4) × 10 - 6 Perylene yellow-green colouring quids - Determination of kinematic viscosity and calculation of dynamic viscosity. Physical and chemical characteristics 4 iSO 3405, Petroleum products - Determination of distillation required characteristics. ISo 6618, Petroleum products and lubricants -- Neutralization The required characteristics of the isO reference petroleum base fluid are given in table 2. number - Colour indicator titration method. 2) Table 2 Method of Unit Value Characteristic determination Kinematic viscosity at 100 oc mm2/s IS0 3104 >6 Kinematic viscosity at 40 oc mm2/s ISO 3104 18 <v<21 Kinematic viscosity at - 40 oC mm2/s ISO 3104 <2 000 Pour point ISO 3016 09-> Flash point (Cleveland open cup) ISO 2592 > 105 Initial boiling point ISO 3405 >240 Neutralization number IA mg KOH/g ISO 6618* <0,2 800 ± 80 Phosphorus ppm X-ray fluorescence A potentiometric method willform the subject of SO 6619. 1) A list of suppliers of the reference fluid or its constituents is available from the ISO/Tc 22 Secretariat or the ISO Central Secretariat. 2) At present at the stage of draft. 1 Copyright International Organization for Standardization ted without license from IHS Not for Resale