HG/T 4438-2012Textile dyeing and finishing auxiliaries - Reduction clearing agents - Determination of clearing effect (English PDF)

1 Foreword

HG/T 4438-2012 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

This standard is a Chinese chemical industry test method standard for textile dyeing and finishing auxiliaries. It addresses reduction clearing agents and sets out how the clearing effect they produce is determined. The standard sits under the Chinese classification G70 and ICS 71.100.40. The procedure is run with the assessment and fastness methods of GB/T 2374-2007, GB/T 3920-2008, GB/T 3921-2008, GB/T 6529-2008, GB/T 6682-2008, GB/T 6688 and GB/T 7568.4-2002, and with HG/T 4266-2011.

3 Normative references

HG/T 4438-2012 cites the following standards, which apply in full or in part through the references made to them in its clauses.

GB/T 2374-2007

GB/T 3920-2008 — Textiles-Tests for colour fastness-Colour fastness to rubbing

GB/T 3921-2008 — Textiles - Tests for Colour Fastness - Colour Fastness to Washing with Soap or Soap and Soda

GB/T 6529-2008 — Textiles - Standard atmospheres for conditioning and testing

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

GB/T 6688

GB/T 7568.4-2002 — Textiles - Tests for color fastness - Specification for polyester adjacent fabric

HG/T 4266-2011 — Textile dyeing and finishing auxiliaries - Determination of solid content

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

Chinese Standard Classification (CCS): G 70

Prefix HG/T: recommended standard.