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GB/T 20708-2019 English PDF (GBT20708-2019)

GB/T 20708-2019 English PDF (GBT20708-2019)

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GB/T 20708-2019: Limit and determination of parts of harmful substances in textile dyeing and finishing auxiliaries

This 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.
GB/T 20708-2019
NATIONAL STANDARD OF THE
PEOPLE 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 Contents
Foreword ... 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 Scope
This 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 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 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 and 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 rules
5.1 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 report
The 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;

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