ISO 20764:2003 PDF

Petroleum and related products — Preparation of a test portion of high-boiling liquids for the determination of water content — Nitrogen purge method

Название (английский):

ISO 20764:2003

Petroleum and related products — Preparation of a test portion of high-boiling liquids for the determination of water content — Nitrogen purge method

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 9
Дата публикации:: 24 октября 2003 г.
Издание:: ISO IS 20764 edition 1 version 1
ICS:: 75.080

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Описание (английский):

ISO 20764:2003 specifies two procedures for the preparation of test portions from petroleum and related products boiling above 200 degrees Celsius, which can then be used for the determination of total water content within the range of 3 mg/kg to 1 000 mg/kg. The method is applicable to unused and used lubricating oils, non-aqueous hydraulic fluids and high-boiling solvents. The test portions generated by these procedures are suitable for standard Karl Fischer water-content determinations, such as those described in ISO 6296 and ISO 12937.

Технические детали

Технический комитет: ISO/TC 28 - Petroleum and related products, fuels and lubricants from natural or synthetic sources
SKU: ISO 20764:2003

Abstract

Overview

ISO 20764:2003 specifies the nitrogen purge method for preparing test portions of high‑boiling petroleum and related products (boiling > 200 °C) for the determination of total water content in the range 3 mg/kg to 1 000 mg/kg. The standard covers two extraction procedures (atmospheric and reduced pressure) that generate test portions suitable for Karl Fischer titration (potentiometric or coulometric).

Key topics and technical requirements

Scope and materials: Applicable to unused and used lubricating oils, non‑aqueous hydraulic fluids and other high‑boiling solvents.
Two procedures
- Atmospheric pressure: Nitrogen purge at 120 °C ± 1 °C for 60 min ± 5 min; cooling to about −77 °C to condense water into dried methanol.
- Reduced pressure (for water‑retaining/used oils): Nitrogen purge at 60 °C ± 1 °C under 0.30–0.65 kPa absolute pressure for 90 min ± 5 min.
Reagents and consumables
- Nitrogen: pure grade, oxygen

Overview

Key topics and technical requirements

Scope and materials: Applicable to unused and used lubricating oils, non‑aqueous hydraulic fluids and other high‑boiling solvents.
Two procedures
- Atmospheric pressure: Nitrogen purge at 120 °C ± 1 °C for 60 min ± 5 min; cooling to about −77 °C to condense water into dried methanol.
- Reduced pressure (for water‑retaining/used oils): Nitrogen purge at 60 °C ± 1 °C under 0.30–0.65 kPa absolute pressure for 90 min ± 5 min.
Reagents and consumables
- Nitrogen: pure grade, oxygen

ISO 20764:2003 PDF

Технические детали

Abstract

Overview

Key topics and technical requirements

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Abstract

Overview

Key topics and technical requirements

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