Withdrawn

HG 2022-1991Determination of free chlorine and total chlorine in industrial circulating cooling water N, N-Diethyl-1, 4-Phenylenediamine titration (English PDF)

工业循环冷却水中游离氯和总氯的测定 N,N--二乙基--1.4--苯二胺滴定法

HG 2022 | Evolution and historical versions

Std ID	Title	Status
HG 2022-1991	Determination of free chlorine and total chlorine in industrial circulating cooling water N, N-Diethyl-1, 4-Phenylenediamine titration	Obsolete

HG 2022-1991 is obsolete. This page sells the obsolete edition, for projects and contracts that still cite it.

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Issued by

Ministry of Chemical Industry

Level / Type

National · Mandatory

Issue date

June 27, 1991

Implementation date

January 1, 1992

Scope

HG 2022-1991 is the English-translated version of 工业循环冷却水中游离氯和总氯的测定 N,N--二乙基--1.4--苯二胺滴定法.

HG 2022-1991 is the Chinese industry standard "Determination of free chlorine and total chlorine in industrial circulating cooling water N, N-Diethyl-1, 4-Phenylenediamine titration".

It was issued on June 27, 1991 by the Ministry of Chemical Industry, and took effect on January 1, 1992. It is obsolete: it has been withdrawn (abolished on January 20, 2010).

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Document preview — HG 2022-1991

National Standard of the People's Republic of China

Issued by: Ministry of Chemical Industry

Document data

1 Document data

Sector: Chemical Industry (industry standard).

Issuing body: Ministry of Chemical Industry.

Date of issue: 1991-06-27.

Date of implementation: 1992-01-01.

Status: obsolete, withdrawn on 2010-01-20.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — all pages — is available in the English PDF.

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