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HG/T 4446-2012Textile dyeing and finishing auxiliaries - Determination of formaldehyde content in dye-fixing agents (English PDF)

纺织染整助剂固色剂中甲醛含量的测定

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Issued by

MIIT

Level / Type

Industry · Recommended

Issue date

December 28, 2012

Implementation date

June 1, 2013

Scope

HG/T 4446-2012 is the English-translated version of 纺织染整助剂固色剂中甲醛含量的测定.

Formaldehyde in dye-fixing agents is what HG/T 4446-2012 measures, a recommended chemical industry standard of China covering textile dyeing and finishing auxiliaries.

It specifies how the formaldehyde content of a fixing agent is determined. The method addresses the free formaldehyde present in such agents. It quotes GB/T 2912.1, GB/T 6682 and GB/T 8170, which are its only normative references.

It carries the Chinese classification G70 and the international classification 71.100.40. Issued on 28 December 2012, it has applied since 1 June 2013.

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Document preview — HG/T 4446-2012

National Standard of the People's Republic of China

ICS: 71.100.40

Issued by: Ministry of Industry and Information Technology of the People's Republic of China

1 Foreword

HG/T 4446-2012 was issued by Ministry of Industry and Information Technology of the People's Republic of China on 28 December 2012 and has been in force since 1 June 2013.

2 Scope

Formaldehyde in dye-fixing agents is what HG/T 4446-2012 measures, a recommended chemical industry standard of China covering textile dyeing and finishing auxiliaries. It specifies how the formaldehyde content of a fixing agent is determined. The method addresses the free formaldehyde present in such agents. It quotes GB/T 2912.1, GB/T 6682 and GB/T 8170, which are its only normative references. It carries the Chinese classification G70 and the international classification 71.100.40.

3 Normative references

HG/T 4446-2012 cites the following standards, which apply in full or in part through the references made to them in its clauses.

GB/T 2912.1-2009 — Textiles -- Determination of formaldehyde -- Part 1: Free and hydrolyzed formaldehyde (water extraction method)

GB/T 6682-2008 — Water for analytical laboratory use - Specification and test methods

GB/T 8170-2008 — Rules of rounding off for numerical values & expression and judgement of limiting values

4 About this standard

Issued by: Ministry of Industry and Information Technology of the People's Republic of China

English translation: about 15 pages

5 Classification and status

International classification (ICS): 71.100.40

Prefix HG/T: recommended standard.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Referenced standards

Normative references

Cited by

HG/T 4729-2014Textile dyeing and finishing auxiliaries - Acid fixing agents

Similar standards

HG/T 6222-2023|HG/T 6256-2023|HG/T 6257-2023|HG/T 4438-2012|HG/T 4441-2012|HG/T 4447-2012

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