Standard No.:	GB/T 19942-2019
Chinese Name:	皮革和毛皮 化学试验 禁用偶氮染料的测定
English Name:	Leather and fur—Chemical tests—Determination of banned azo colorants
Professional Classification:	Y46 Furs and leathers
ICS Classification:	59.140.30 Leather and furs
Issued by:
Issued on:	2019-12-31
Implemented on:	2020-07-01
Status:	VALID
Replace:	GB/T19942-2005 Leather and fur-Chemical tests-Determination of banned azo colourants
Language:	English
File Format:	PDF
Word Count:	8000 words
Price(USD):	240 (USD)
Delivery:	via email in 1-3 business day

1 Scope

This standard specifies a method for determining banned azo colorants, which can release carcinogenic aromatic amines, derived from dyed leather and fur.

This standard applies to the determination of banned azo colorants in various dyed leathers, furs and their products.

2 Normative references

The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

GB/T 6682 Water for analytical laboratory use—Specification and test methods (GB/T 6682-2008, ISO 3696:1987, MOD)
GB/T 33392 Leather and fur—Chemical tests—Determination of 4-aminoazobenzene in banned azo colorants (GB/T 33392-2016, ISO 17234-2:2011, MOD)
QB/T 1267 Fur—Chemical, physical and mechanical and fastness tests—Sampling location (QB/T 1267-2012, ISO 2418:2002, MOD)
QB/T 1272 Fur—Preparation of chemical test samples (QB/T 1272-2012, ISO 4044:2008, MOD)
QB/T 2706 Leather—Chemical, physical and mechanical and fastness tests—Sampling location (QB/T 2706-2005, ISO 2418:2002, MOD)
QB/T 2716 Leather—Preparation of chemical test samples (QB/T 2716-2018, ISO 4044:2008, MOD)

3 Terms and definitions

For the purposes of this document, the following terms and definitions apply.

3.1
banned azo colorants
colorants that can release, by reductive cleavage of azo group(s), one or more of the aromatic amines listed in Table 1