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ISO 5661:1983

Petroleum products — Hydrocarbon liquids — Determination of refractive index

Oct 1, 1983

General information

90.93     Dec 3, 2025

ISO

ISO/TC 28

International Standard

75.080  

French   English  

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Scope

Gives a method for the determination of this quantity of transparent and light-coloured hydrocarbon liquids such as are used in capacitors, transformers, circuit breakers and in cables of the oil-filled type. This method is applicable to liquids having indices in the range 1,33 to 1,7 and at temperatures of 20 to 30 degrees centigrade. It is not applicable, within the accuracy stated of liquids having bubble points so close to the test temperature that a reading cannot be obtained before substantial deterioration takes place.

Life cycle

NOW

PUBLISHED
ISO 5661:1983
90.93 Standard confirmed
Dec 3, 2025

National adoptions

SRPS ISO 5661:2011  
ISS

Petroleum products — Hydrocarbon liquids — Determination of refractive index

90.93   Standard confirmed

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