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GB/T 20708-2019: Limit and determination of parts of harmful substances in textile dyeing and finishing auxiliaries Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid GB/T 20708: Historical versions
Similar standardsGB/T 20708-2019: Limit and determination of parts of harmful substances in textile dyeing and finishing auxiliaries---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT20708-2019 NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 71.100.40 G 70 Replacing GB/T 20708-2006 Limit and determination of parts of harmful substances in textile dyeing and finishing auxiliaries ISSUED ON: MARCH 25, 2019 IMPLEMENTED ON: FEBRUARY 01, 2020 Issued by: State Administration for Market Regulation; Standardization Administration of the People's Republic of China. Table of ContentsForeword ... 3 1 Scope ... 5 2 Normative references ... 5 3 Limit requirements ... 6 4 Test methods ... 8 5 Inspection rules ... 9 6 Test report ... 9 Annex A (normative) List of harmful substances ... 11 Limit and determination of parts of harmful substances in textile dyeing and finishing auxiliaries WARNING -- User of this Standard shall have practical experience in laboratory work. This Standard does not address all security issues. It is the responsibility of the user to take appropriate safety and health measures and to ensure compliance with the relevant national regulations.1 ScopeThis Standard specifies limit requirements, test methods, inspection rules, test report for parts of harmful substances in textile dyeing and finishing auxiliaries (see Annex A). This Standard is applicable to various textile dyeing and finishing auxiliaries used for textile products in the dyeing and finishing process.2 Normative referencesThe 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 601, Chemical Reagent - Preparations of Standard Volumetric Solutions GB/T 603, Chemical reagent - Preparations of reagent solutions for use in test methods 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 GB 19601, Limit and determination of 23 harmful aromatic amines in dye products GB/T 23972, Determination of alkylphenols and alkylphenol polyethoxylates in textile dyeing and finishing auxiliaries - LC/MS method P-chloroaniline ≤30 2,4-diaminoanisole ≤30 4,4'-diaminodiphenylmethane ≤30 3,3'-dichlorobenzidine ≤30 3,3'-dimethoxybenzidine ≤30 3,3'-dimethylbenzidine ≤30 3,3'-dimethyl-4,4'- diaminodiphenylmethane ≤30 2-methoxy-5-methylaniline ≤30 3,3'-dichloro-4,4'- diaminodiphenylmethane ≤30 4,4'-diaminodiphenyl ether ≤30 4,4'-diaminodiphenyl sulfide ≤30 O-toluidine ≤30 2,4-diaminotoluene ≤30 2,4,5-trimethylaniline ≤30 2-amino-4-nitrotoluene ≤30 O-aminoazotoluene ≤30 O-methoxyaniline (o-aminoanisole) ≤30 2,4-dimethylaniline ≤30 2,6-dimethylaniline ≤30 4-aminoazobenzene ≤30 2 Heavy metal elements a Arsenic ≤10 Cadmium ≤5 Cobalt ≤50 Chromium ≤50 Copper ≤125 HG ≤4 Nickel ≤50 Lead ≤10 Antimony ≤125 Hexavalent chromium ≤25 3 Formaldehyde ≤750 4 Alkylphenol ethoxylate (APEOs) Octylphenol (OP) ≤100 b ≤1000 c Nonylphenol (NP) Octylphenol ethoxylate (OPEO) -- Nonylphenol ethoxylate (NPEO) -- 5 Phthalate Dibutyl phthalate (DBP) ≤1000 Butyl phthalate (BBP) Di(2-ethylhexyl) phthalate (DEHP) Di-n-octyl phthalate (DNOP) Diisodecyl phthalate (DINP) Diisodecyl phthalate (DIDP) Determination of alkylphenol ethoxylate is performed according to GB/T 23972. 4.6 Determination of phthalate Determination of phthalate is performed according to GB/T 24168. 4.7 Determination of perfluorinated compound Determination of perfluorinated compound is performed according to GB/T 29493.2. 4.8 Determination of organotin compound Determination of organotin compound is performed according to GB/T 29493.3. 4.9 Determination of chlorophenol content Determination of chlorophenol content is performed according to GB/T 24166.5 Inspection rules5.1 Determination rules Products shall be subject to all-item inspection according to this Standard by quality inspection department. Compare inspection results and requirements specified in this Standard. When they all meet requirements of this Standard, this product shall be accepted. 5.2 Re-inspection Should one indicator in the inspection results fail to meet this Standard, it shall re-sample from the packaging of double quantity for inspection. Even when one indicator in the re-inspection results fails to meet requirements of this Standard, the whole batch of products shall be rejected.6 Test reportThe test report shall at least provide the following information: a) sample description; b) standard used (reference to this Standard); c) test results and detection limit; d) instrument names and models used; ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. |
