Vietnam Issues Draft National Technical Regulation for Azo Dye and Formaldehyde in Textile Products
The Vietnam Ministry of Industry and Trade (MOIT) has drafted a new national technical regulation on azo dye and formaldehyde content in textile products. Textile products must meet these standards before they can be sold in Vietnam.
- (1888PressRelease) March 11, 2017 - The Vietnam Ministry of Industry and Trade (MOIT) has drafted a new national technical regulation on azo dye and formaldehyde content in textile products offered for sale on the Vietnamese market. The proposed new rule follows the revocation of Circular No. 37/2015/TT-BCT in November 2016.
The new draft Circular specifies limits and inspections methods for formaldehyde and aromatic amines, derived from azo colorants, in textile products. It applies to all textile manufacturers and importers working in the Vietnamese market.
The new draft regulation proposes a single maximum limit of content of 30 mg/kg for each aromatic amine, in any textile product, and three different maximum limits of content for formaldehyde, dependent upon the type of textile product. These are:
• Textile products for children under 36 months of age - 30mg/kg
• Textile products in direct skin contact - 75mg/kg
• Textile products without direct skin contact - 300mg/kg
Before products can be placed on the market, textile products must be assessed and certified for standard conformity according to method 5 or method 7 of Circular No.28/2012/TT-BKHCN.
• Method 5: Testing on representative sample and factory audit
• Method 7: Testing for lot of product
Once a product has the standard conformity stamp, it can be placed on the market.
The proposed Circular - Limits of Content of Formaldehyde and Aromatic Amines Derived from Azo Colorants in Textile Products - also defines the technical criteria and testing methods required before a product can receive certification for standard conformity.
For formaldehyde content in textile products, the following methods are used:
• TCVN 7421-1:2013, Textiles - Determination of formaldehyde - Part 1: Free and hydrolyzed formaldehyde (water extraction method)
• ISO 14184-1:2011, Textiles - Determination of formaldehyde - Part 1: Free and hydrolyzed formaldehyde (water extraction method)
For the content of aromatic amines derived from azo colorants on textile products, the following testing methods are used:
• ISO 24362-1:2014, Textiles - Methods for determination of certain aromatic amines derived from azo colorants - Part 1: Detection of the use of certain azo colorants accessible with and without extracting the fibers and ISO 24362-3:2014, Textiles - Methods for determination of certain aromatic amines derived from azo colorants - Part 3: Detection of the use of certain azo colorants, which may release 4-aminoazobenzene
• EN 14362-1:2012, Textiles - Methods for determination of certain aromatic amines derived from azo colorants - Part 1: Detection of the use of certain azo colorants accessible with and without extracting the fibers and EN 14362-3:2012, Textiles - Methods for determination of certain aromatic amines derived from azo colorants - Part 3: Detection of the use of certain azo colorants, which may release 4-aminoazobenzene
The proposed Circular states that sampling of textile products will be determined by the Probability and Statistics method.
Inspections will be carried out by appointed inspecting bodies, authorized by the Minister of Trade and Industry.
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