ISO 1393-1977 rus PDF

Full title and description

Liquid halogenated hydrocarbons for industrial use — Determination of acidity — Titrimetric method (ISO 1393:1977). This Soviet / Russian issue (St ISO 1393-1977 rus) is a Russian-language edition/representation of the original ISO text intended for laboratories and quality-control departments handling industrial halogenated hydrocarbons.

Abstract

The standard specifies a titrimetric method for determining the acidity of liquid halogenated hydrocarbons intended for industrial use. The procedure is based on extracting an aqueous portion from a test sample and titrating the acidity of that extract with a standard sodium hydroxide solution using bromocresol green as the indicator. The method is not applicable to halogenated materials that hydrolyse at ambient temperature.

General information

• Status: Withdrawn.
• Publication date: February 1977 (published 1 February 1977).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 71.080.20 (Chemical analysis and laboratory methods).
• Edition / version: Edition 1 (1977).
• Number of pages: 2 pages.

Scope

Specifies a laboratory titrimetric procedure to determine total acidity in liquid halogenated hydrocarbons used industrially by extracting an aqueous phase and titrating with standard NaOH in the presence of bromocresol green. The procedure excludes halogenated materials that undergo hydrolysis at ambient temperature; it is intended for routine quality control and specification testing of industrial halogenated solvents and process chemicals.

Key topics and requirements

• Preparation of an aqueous extract from a test portion of the halogenated hydrocarbon sample.
• Titration of the extracted aqueous phase with a standard volumetric sodium hydroxide solution.
• Use of bromocresol green as the visual indicator for end point detection.
• Explicit exclusion of materials that hydrolyse at ambient temperature (method not applicable in those cases).
• Simple, short procedure suitable for routine laboratory implementation (concise two‑page standard).

Typical use and users

Analytical and quality-control laboratories in chemical manufacturing and processing plants, procurement/specification teams verifying delivered industrial solvents, environmental testing labs checking acidic contaminants, and regulatory or standards bodies reviewing historical test methods. The Russian-language edition is aimed at Russian-speaking laboratories and institutions requiring the ISO method in their native language.

Related standards

This standard replaced ISO Recommendation R 1393-1970. Several related ISO methods address tests for halogenated hydrocarbons and other industrial chemicals; note that ISO 1393:1977 has been withdrawn and appears in lists of older ISO chemical test standards that were withdrawn without direct replacement. Users should check current ISO catalogues for up-to-date methods.

Keywords

halogenated hydrocarbons, acidity determination, titrimetric method, sodium hydroxide titration, bromocresol green, industrial solvents, ISO 1393, Russian translation.

FAQ

Q: What is this standard?

A: ISO 1393:1977 is an International Standard titled "Liquid halogenated hydrocarbons for industrial use — Determination of acidity — Titrimetric method"; the "St ISO 1393-1977 rus" label denotes a Russian-language issue or offering of that ISO text.

Q: What does it cover?

A: It covers a short titrimetric test: extraction of an aqueous phase from a halogenated hydrocarbon sample and titration of that extract with standard NaOH using bromocresol green as indicator, with the method explicitly not applicable to materials that hydrolyse at ambient temperature.

Q: Who typically uses it?

A: Chemical analysis and quality-control laboratories in industries that handle halogenated solvents and process chemicals, procurement/specification personnel, and testing laboratories—particularly Russian-speaking organizations if using the Russian edition.

Q: Is it current or superseded?

A: ISO 1393:1977 is withdrawn. Historical records and standards listings indicate it was withdrawn (appearing in compilations of withdrawn ISO chemical test standards); users should consult the current ISO catalogue for any modern replacement or alternative test methods.

Q: Is it part of a series?

A: It is one of a group of ISO methods for industrial chemical test procedures of the 1970s (chemical analysis and test standards); the 1977 chemical-methods series includes many related short test methods, several of which have since been withdrawn or replaced.

Q: What are the key keywords?

A: Halogenated hydrocarbons, acidity, titration, NaOH, bromocresol green, industrial solvents, ISO 1393.