ISO 2202-1972 PDF
Name in English:
St ISO 2202-1972
Name in Russian:
Ст ISO 2202-1972
Original standard ISO 2202-1972 in PDF full version. Additional info + preview on request
Full title and description
Liquid chlorine for industrial use — Determination of water content using an electrolytic analyser. Specifies an electrolytic method for measuring the volatile water that volatilizes with liquid chlorine, intended for very low moisture levels (around 0.001 % m/m).
Abstract
This standard describes a procedure in which gasified chlorine is passed (typical rate 100 ml/min) over phosphorus pentoxide applied as a thin layer on a glass rod that also serves as an electrolytic cell (electrodes such as platinum). Water absorbed on the reagent is decomposed by electrolysis and the resulting current is measured as a function of water content; the method is intended for determining moisture at the 0.001 % (m/m) level.
General information
- Status: Withdrawn (International Standard withdrawn).
- Publication date: August 1972 (Edition 1, 1972-08).
- Publisher: International Organization for Standardization (ISO).
- ICS / categories: 71.060.10 (Chemical elements / chlorine and related analyses).
- Edition / version: Edition 1 (1972); Addendum: ISO 2202:1972/Add 1:1975.
- Number of pages: 5.
Key bibliographic and lifecycle details (publication, scope and withdrawal) are recorded by ISO and related standards bodies.
Scope
Applies to the determination of volatile water that vaporizes together with liquid chlorine and is suitable for checking moisture levels in liquid chlorine products where the moisture limit of interest is approximately 0.001 % (m/m). The procedure covers sample gasification, continuous absorption on phosphorus pentoxide, formation of an electrolytic cell on a glass rod and measurement of electrolytic current proportional to the water content. (Standard and addendum provide procedural details and operating parameters.)
Key topics and requirements
- Determination of volatile (co‑distilling) water in liquid chlorine.
- Use of phosphorus pentoxide as the absorbing reagent applied in a thin layer on a glass rod.
- Construction of a glass‑rod electrolytic cell with electrodes (for example platinum) wrapped along its length.
- Typical gas flow rate for the method: about 100 ml/min of gasified chlorine.
- Measurement principle: electrolysis of absorbed water and recording electrolytic current proportional to water content, with sensitivity near 0.001 % (m/m).
Typical use and users
Used by industrial chlorine manufacturers, quality control and analytical laboratories, regulatory and inspection bodies responsible for chemical product specification and safety, and researchers validating moisture‑control processes for chlorine handling and storage. It is primarily a laboratory analytical procedure rather than an on‑board process control standard.
Related standards
ISO 2202:1972 has an addendum published in 1975 (ISO 2202:1972/Add 1:1975) that modifies or clarifies the original text. Other ISO and national standards addressing chlorine product specifications, sampling and related analytical methods may be of interest when establishing a comprehensive test program for liquid chlorine; consult ISO/TC 47 publications and national catalogues for related documents.
Keywords
liquid chlorine; moisture determination; water content; electrolytic analyser; phosphorus pentoxide; electrolytic cell; ISO 2202; analytical method; low‑level moisture; ISO/TC 47.
FAQ
Q: What is this standard?
A: ISO 2202:1972 is an International Standard titled "Liquid chlorine for industrial use — Determination of water content using an electrolytic analyser" that specifies an electrolytic method for measuring volatile water in liquid chlorine.
Q: What does it cover?
A: It covers the sampling/analysis technique in which gasified chlorine passes over phosphorus pentoxide on a glass rod that also serves as an electrolytic cell; absorbed water is electrolyzed and the resulting current is used to quantify moisture down to about 0.001 % (m/m).
Q: Who typically uses it?
A: Chlorine manufacturers, analytical and quality control laboratories, standards bodies and regulators involved in ensuring product conformity and safe handling of industrial chlorine.
Q: Is it current or superseded?
A: ISO 2202:1972 is withdrawn. The standard lifecycle records show it as withdrawn; an addendum (ISO 2202:1972/Add 1:1975) exists and the withdrawal was recorded in standards catalogues (withdrawal recorded by national bodies). No direct replacement is specified in the bibliographic record.
Q: Is it part of a series?
A: It is a standalone International Standard within the scope of ISO/TC 47 (chemical elements) and is accompanied by at least one addendum (1975). Related ISO work on chlorine, sampling and analytical techniques may be found under ISO/TC 47 and relevant ICS group 71.060.10.
Q: What are the key keywords?
A: Liquid chlorine; water content; electrolytic analysis; phosphorus pentoxide; moisture determination; low‑level moisture; electrolytic cell; analytical method.