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Position: Chinese Standard in English/GB/T 2912.1-2009
GB/T 2912.1-2009   Textiles—Determination of formaldehyde—Part 1:Free and hydrolyzed formaldehyde(water extraction method) (English Version)
Standard No.: GB/T 2912.1-2009 Status:valid remind me the status change

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Implemented on:2010-1-1 Delivery: via email in 1 business day
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Standard No.: GB/T 2912.1-2009
English Name: Textiles—Determination of formaldehyde—Part 1:Free and hydrolyzed formaldehyde(water extraction method)
Chinese Name: 纺织品 甲醛的测定 第1部分:游离和水解
Chinese Classification: W04    Basic standards and general methods
Professional Classification: GB    National Standard
ICS Classification: 59.080.01 59.080.01     Textiles in general 59.080.01
Issued by: AQSIQ; SAC
Issued on: 2009-6-11
Implemented on: 2010-1-1
Status: valid
Superseding:GB/T 2912.1-1998 Textiles--Determination of formaldehyde--Part 1:Free and hydrolized formaldehyde(Water extraction method)
Language: English
File Format: PDF
Word Count: 6000 words
Price(USD): 80.0
Delivery: via email in 1 business day
Warning: the personnel using this Part of GB/T 2912 shall have practical experiences in regular laboratory work. This Part does not point out all the possible safety problems. Users have the responsibility to take appropriate safety and health measures and also ensure meeting the conditions specified in relevant regulations of the State. 1 Scope This Part of GB/T 2912 specifies a method for determining the amount of free formaldehyde extracted through water extraction method and partly through hydrolysis. This Part is applicable to the textile samples in any form. This Part is applicable to the textiles with free formaldehyde content between 20mg/kg~3500 mg/kg. The lower limit is 20 mg/kg. Below this limit the result is reported as 'not detectable'. 2 Normative References The following standards contain provisions which, through reference in this Part of GB/T 2912, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding correction to), or revisions of, any of these publications do not apply. However, the parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards. For undated references, the latest edition of the normative document referred to applies. GB/T 6529 Textiles-Standard atmospheres for conditioning and testing (GB/T 6529-2008, ISO 139:2005, MOD) GB/T 6682 Water for analytical laboratory use - Specification and test methods (GB/T 6682-2008, ISO 3696:1987, MOD) GB/T 11415 Laboratory sintered (fritted) filters-Porosity grading, classification and designation (GB/T 11415-1989, ISO 4793:1980, NEQ) 3 Principle Specimen is extracted in the water bath at 40°C for a certain time. After the extraction liquid develops by the acetylacetone, the absorbance of formaldehyde in the color reagent is determined by the spectrophotometer under 412 nm wave length. The results are compared with the standard formaldehyde working curve. The content of free formaldehyde in the sample is then calculated. 4 Reagents All reagents shall be analytical reagent quality. 4.1 Distilled water or grade 3 water Complying with GB/T 6682 4.2 Acetylacetone reagent (Nash reagent) Dissolve 150g of ammonium acetate in about 800mL of water, add 3mL of glacial acetic acid and 2mL of acetylacetone, transfer into a 1000mL volumetric flask and make up to the mark with water, store in a brown bottle. Note: the reagent darkens in color slightly on standing over the first 12 h, for this reason the reagent should be held 12 h before use. The validity is 6 weeks. Since the sensitivity may change slightly over a long period of time, it is good practice to run a calibration curve weekly to correct for slight changes in the standard curve. 4.3 Formaldehyde solution Approximately 37% (mass concentration). 4.4 Ethanolic solution of dimedone Prepare by dissolving 1g of dimedone (dimethyl-dihydro-resorcinol or 5,5-diraethyl-cyclohexanedione) in ethanol and by diluting the solution with ethanol to make 100mL. Prepare immediately before use.
Foreword i 1 Scope 2 Normative References 3 Principle 4 Reagents 5 Apparatus 6 Preparation of Formaldehyde Standard Solution and Standard Curve 7 Specimen Preparation 8 Procedures 9 Calculation and Expression of the Results 10 Test Report Appendix A (Normative) Standardization 0f Formaldehyde Stock Solution - Sodium Sulfite Method Appendix B (Normative) Standardization of Formaldehyde Stock Solution - Iodometry Appendix C (Informative) Information on Accuracy of the Method
Referred in GB/T 2912.1-2009:
*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 11415-1989 Laboratory sintered(fritted) filters-Porosity grading, classification and designation
*GB/T 39552.2-2020 Sunglasses and sunglare filters-Part 2:Test methods
*HJ 1014-2020 Emissions control technical requirements of non-road diesel mobile machinery
*GB/T 39628-2020 Terminology of marine forecast
*NB/T 47012-2020 Pressure vessels for refrigerant device
*GB/T 16895.21-2020 Low-voltage electrical installations—Part 4-41:Protection for safety—Protection against electric shock
*GJB 1521-1992 General specification for pulse, low power transformers
*GB/T 39733-2020 Recycling iron-steel materials
*TSG 11-2020 Regulation on Safety Technology for Boiler
*GB 20075-2020 Passenger handholds and footrests on motorcycles
*GB 39669-2020 General technical requirements for safety of toothbrushes and oral implements
*GB 24330-2020 General security technical specification for domestic sanitary insecticide
*GB 518-2020 Motorcycle tyres
*GB 16410-2020 Domestic gas cooking appliances
*GB 28665-2012/XG1-2020 Emission standard of air pollutants for iron smelt industry,includes Amendment 1
*GB 28662-2012/XG1-2020 Emission standard of pollutants for sintering and pelletizing of iron and steel,includes Amendment 1
*GB 31573-2015/XG1-2020 Emission standards of pollutants for inorganic chemical industry,includes Amendment 1
*QB/T 4552-2020 Slippers
*GB 18484-2020 Standard for pollution control on hazardous waste incineration
*GB/T 39679-2020 Integrated circuit card device for lifts
GB/T 2912.1-2009 is referred in:
* GB 23314-2009 Neckties
* GB 30585-2014 Safety Technical Specifications for Childrens Footwaer
* GB/T 22756-2008 Leather sandals
* GB 18401-2010 National general safety technical code for textile products
* QB/T 2955-2008 Casual shoes
* GB 28007-2011 General technical requirements for childrens furniture
* GB/T 15107-2013 Athletic Shoes
* FZ/T 73001-2008 Hosiery
* FZ/T 73001-2008/XG1-2009 Hosiery
* FZ/T 73001-2008/XG1-2010 Hosiery (including Amendment 1)
* GB/T 2660-2008 Shirts and blouses
* FZ/T 81008-2011 Jackets
* GB/T 2664-2009 Mens suits and coats
* GB/T 2666-2009 Trousers
* GB/T 2662-2008 Cotton wadded clothes
* GB/T 22849-2009 Knitted T-shirt
* FZ/T 73020-2004 Knitted sportswear
* FZ/T 81006-2007 Jeanswear
* FZ/T 81012-2006 Scarf and shawl
* GB/T 14272-2011 Down Garments
* GB/T 21980-2008 Current technical criterion for sportswear and exposure suit
* GB/T 18885-2009 Technical specifications of ecological textiles
* FZ/T 73013-2010 Knitted swimming suits
* FZ/T 73008-2002 Knitted T-shirt
* FZ/T 73025-2006 Knitted garment and adornment for infant
* FZ/T 73025-2013 Knitted garment and adornment for infant
* FZ/T 73042-2011 Knitted scarf and shawl
* FZ/T 73002-2006 Knitted caps
* FZ/T 82002-2006 Woven caps
* FZ/T 81014-2008 Infants wear
* FZ/T 73024-2006 Knitted underwear in chemical fibres
* GB 30585-2014 Safety Technical Specifications for Children’s Footwear
* GB 30004-2013 Safety requirements of cradles
* GB/T 15107-2013 Athletic Shoes
* GB 30585-2014 Safety Technical Specifications for Children’s Footwear
* FZ/T 73019.2-2013 Knitted shape wear—Figured-style
* GB 30004-2013 Safety requirements of cradles
* FZ/T 73025-2013 Knitted garment and adornment for infant
* FZ/T 73045-2013 Knitted Childrens Wear
* GB 30585-2014 Safety Technical Specifications for Children’s Footwear
* GB 30004-2013 Safety requirements of cradles
* GB/T 14272-2011 Down Garments
* GB 30585-2014 Safety Technical Specifications for Children’s Footwear
* GB 30004-2013 Safety requirements of cradles
* GB/T 15107-2013 Athletic Shoes
* FZ/T 73019.2-2013 Knitted shape wear—Figured-style
* FZ/T 73025-2013 Knitted garment and adornment for infant
* FZ/T 73045-2013 Knitted Childrens Wear
* FZ/T 73020-2012 Knitted Casual Wear
* FZ/T 81004-2012 Skirts and skirted suit
* GB 28007-2011 General technical requirements for childrens furniture
* FZ/T 73042-2011 Knitted scarf and shawl
* FZ/T 81008-2011 Jackets
* FZ/T 43015-2011 Silk knitting garments
* GB 18401-2010 National general safety technical code for textile products
* GB/T 2664-2009 Mens suits and coats
* GB 23314-2009 Neckties
* GB/T 18885-2009 Technical specifications of ecological textiles
* GB/T 22849-2009 Knitted T-shirt
* FZ/T 73001-2008/XG1-2010 Hosiery (including Amendment 1)
* GB/T 22756-2008 Leather sandals
* GB/T 22756-2008 Leather sandals
* GB/T 2662-2008 Cotton wadded clothes
* GB/T 2660-2008 Shirts and blouses
* GB/T 21980-2008 Current technical criterion for sportswear and exposure suit
* FZ/T 73001-2008 Hosiery
* FZ/T 81014-2008 Infants wear
* QB/T 2955-2008 Casual shoes
* GB 30585-2014 Safety Technical Specifications for Children’s Footwear
* FZ/T 73019.2-2004 Knitted constricitive in-wear - Figured-style
* FZ/T 73020-2004 Knitted sportswear
* FZ/T 73008-2002 Knitted T-shirt
* QB/T 4332-2012 Craftwork shoes
* GB 30585-2014 Safety Technical Specifications for Children’s Footwear
* GB 30585-2014 Safety Technical Specifications for Children’s Footwear
* QB/T 4552-2013 Slippers
* GB 30004-2013 Safety requirements of cradles
* GB 30004-2013 Safety requirements of cradles
* GB 30585-2014 Safety Technical Specifications for Children’s Footwear
* GB/T 15107-2013 Athletic Shoes
* GB/T 15107-2013 Athletic Shoes
* GB/T 15107-2013 Athletic Shoes
* FZ/T 73029-2009/XG1-2011 Knitted trousers (including Amendment 1)
* FZ/T 73029-2009 Knitted trousers
* GB/T 22853-2009 Knitted sportwear
* FZ/T 43015-2011 Silk knitting garments
* FZ/T 72007-2006 Warp knitted fake fur
* FZ/T 73011-2004 Knitted binder
* FZ/T 73015-2009 Flax knitting goods
* FZ/T 73015-2009 Flax knitting goods
* FZ/T 73019.1-2010 Knitted constrictive in-wear - Elastic-style
* FZ/T 73019.2-2004 Knitted constricitive in-wear - Figured-style
* FZ/T 73019.2-2004 Knitted constricitive in-wear - Figured-style
* FZ/T 73020-2012 Knitted Casual Wear
* FZ/T 73022-2012 Knitted theraml underwear
* FZ/T 73024-2006 Knitted underwear in chemical fibres
* FZ/T 73028-2009 Knitted artificial leather garment
* FZ/T 73030-2009 Knitted foot cover
* FZ/T 73031-2009 Pressure socks
* FZ/T 73032-2009 Knitted jeanswear
* FZ/T 73033-2009 Soybean protein knitted underwear
* FZ/T 73035-2010 Knitted natural colour cotton underwear
* FZ/T 73041-2011 Warp—knitted hosiery
* FZ/T 73042-2011 Knitted scarf and shawl
* FZ/T 81001-2007 Pajamas
* FZ/T 81004-2012 Skirts and skirted suit
* FZ/T 81015-2008 Wedding gown and full dress
* FZ/T 81016-2008 Gambiered canton silk garmetns
* GB/T 2665-2009 Womens suits and coats
* GB/T 22849-2009 Knitted T-shirt
* FZ/T 73017-2014 Knitted homewear
* FZ/T 73046-2013 Moulded bra
* GB 18401-2003 National General Safety Technical Code for Textile Products
* GB/T 3325-2008 Metal furniture - General technical requirements
* FZ/T 74002-2014 Sports Brassiere
* QB/T 4329-2012 Cloth shoes
* GB/T 8878-2014 Knitted cotton underwear
* QB/T 1002-2015 Leather shoes
* QB/T 4556-2013 Snow boots
* GB/T 22849-2014 Knitted T-shirt
* QB/T 4548-2013 Golf shoes
* GB/T 23328-2009 Woven garments for students
* FZ/T 73047-2013 Knitted civil gloves
* FZ/T 73053-2015 Knitted down garments
* FZ/T 73052-2015 Washed knitted garments
* FZ/T 73024-2014 Knitted underwear with chemical fibres
* QB/T 4546-2013 Children’s leather sandals
* GB/T 19706-2015 Football shoes
* GB/T 2912.3-2009 Textiles—Determination of formaldehyde—Part 3:High performance liquid chromatography method
* FZ/T 73026-2014 Knitted skirt and lady suit
* QB/T 4331-2012 Children’s athletic shoes
*GB/T 8878-2009 Cotton knitted underwear
*GB/T 32614-2016 Outdoor sportswear―Water resistant garment
*GB 31892-2015 General safety specification of umbrellas
*FZ/T 74005-2016 Knitted Yoga Clothes
*GB/T 22756-2017 Leather sandals
*FZ/T 73007-2002 Knitted sportswear
*FZ/T 73010-2008 Knitted workmanship sweater
*FZ/T 73017-2008 Knitted garment and adornment for infant
*FZ/T 73001-2016 Hosiery
*GB/T 33734-2017 Woven bedding for infants
*GB/T 32444-2015 General technical requirements for bamboo furniture
*GB/T 18132-2008 Silk garments
*FZ/T 73012-2017 Brassiere
*FZ/T 73032-2017 Knitted jeanswear
*FZ/T 73058-2017 Knitted coats
*FZ/T 73059-2017 Reversible garments
*FZ/T 73013-2017 Knitted swiming suits
*GA 869-2010 Protective hood for firefighters
*QB/T 5243-2018 Clutch
*QB/T 1618-2018 Belt
*QB/T 1619-2018 Wallet
*GB/T 24821-2009 Dining tables and chairs
*FZ/T 73049-2014 Knitted mask
*QB/T 2155-2018 Travelling case and Trolley bag
*QB/T 2934-2018 Grass-platied product
*QB/T 4553-2013 Lightweight hiking shoes
*QB/T 2822-2018 Fur garment
*FZ/T 43014-2018 Silk scarf and shawl
*GB/T 24152-2018 Sports shoes for basketball and volleyball
*GB/T 22853-2019 Knitted sportwears
*QB/T 1615-2018 Leather garment
*FZ/T 73037-2019 Knitted sports socks
*FZ/T 73029-2019 Knitted trousers
*FZ/T 72007-2019 Warp knitted faux fur
*FZ/T 73061-2019 Knitted Jacket
*GB/T 38880-2020 Technical specification of children mask
*GB 8965.1-2020 Protective clothing — Flame retardant protective clothing
*FZ/T 73026-2006 Knitted skirt suit
*QB/T 4662-2014 Knitting hat
*T/CAQI 164-2020 Electric mask
*GB/T 31888-2015 School uniforms of primary and secondary students
*GB/T 39508-2020 Knitted garments for infants and children
*GB/T 18885-2020 Technical specifications of ecological textiles
*QB/T 4458-2013 Folding chair
*QB/T 1194-2012 Down&Feather mattress
*GB/T 29868-2020 Sports protective products—Knitted products general technical requirements
*GB/T 40276-2021 Soft nonwoven towels
*GB/T 20096-2021 Roller skate
*GB/T 40228-2021 Guide for the control of some chemicals in apparel accessories and components
*GB 12014-2019 Protective clothing—Static protective clothing
*GB/T 40351-2021 Ecological technical requirements for recycled Poly(ethylene terephthalate) fiber
*QB/T 4552-2020 Slippers
*QB/T 5245-2018 Leather garment with down feather fillers
*QB/T 5659-2021 Cribs
*GB/T 18863-2002 No-iron textiles
*FZ/T 81011-2008 Neckties
*FZ/T 08002-2022 Textile products for newborn
*QB/T 1333-2018 Handbag and Knapsack
*GB/T 23314-2009 Neckties
*FZ/T 43004-2004 Silk weft knitted fabrics
*FZ/T 73063-2019 Knitted maternity garments
*GB 8965.4-2022 Protective clothing—Arc flash protective clothing
*T/CSIQ 8007-2018 Casual shoes
*T/CSIQ 8004-2018 General sportswear
*T/CSIQ 8008-2018 Town footwear
*T/CSIQ 8003-2018 Sandals
*FZ/T 73043-2020 Knitted shirts
*T/CTCA 1-2019 PM2.5 protective mask
*FZ/T 73022-2019 Knitted theraml underwear
*GB 24539-2021 Protective clothing-Chemical protective clothing
*QB/T 1584-2018 Leather glove
*GB/T 15107-2013/XG1-2018 Athletic shoes,includes Amendment 1
*GB/T 42806-2023 Juvenile products—General requirements for tableware and feeding utensils
*QB/T 2955-2017 Casual shoes
*FZ/T 73028-2017 Knitted artificial leather garment
*GB/T 42804-2023 Juvenile products—General requirements for soothing articles bearing children
*GB/T 42801-2023 Juvenile products—General requirements for daily sports protection articles
*GB/T 43002-2023 Children's furniture—Quality inspection and quality judgement
*GB/T 39390-2023 Custom furniture—Quality inspection and quality evaluation
*GB/T 13403-2023 Gaskets for large-diameter steel pipe flanges
*QB/T 5541-2020 Wading footwear
*GB 25038-2024 General safety requirements for footwear
*GB 43469-2023 Portable aviation child restraint device
*FZ/T 73049-2024 Knitted mask
*GB/T 45273-2025 Juvenile products―General technical requirements for toilet utensils
*GB/T 45274-2025 Juvenile products―General technical requirements for sensory integration training products
*GB/T 24345-2025 Corn dyed yarns
*GB/T 45041-2024 Wool and wool-like knitting goods for infants
Code of China
Standard
GB/T 2912.1-2009  Textiles—Determination of formaldehyde—Part 1:Free and hydrolyzed formaldehyde(water extraction method) (English Version)
Standard No.GB/T 2912.1-2009
Statusvalid
LanguageEnglish
File FormatPDF
Word Count6000 words
Price(USD)80.0
Implemented on2010-1-1
Deliveryvia email in 1 business day
Detail of GB/T 2912.1-2009
Standard No.
GB/T 2912.1-2009
English Name
Textiles—Determination of formaldehyde—Part 1:Free and hydrolyzed formaldehyde(water extraction method)
Chinese Name
纺织品 甲醛的测定 第1部分:游离和水解
Chinese Classification
W04
Professional Classification
GB
ICS Classification
Issued by
AQSIQ; SAC
Issued on
2009-6-11
Implemented on
2010-1-1
Status
valid
Superseded by
Superseded on
Abolished on
Superseding
GB/T 2912.1-1998 Textiles--Determination of formaldehyde--Part 1:Free and hydrolized formaldehyde(Water extraction method)
Language
English
File Format
PDF
Word Count
6000 words
Price(USD)
80.0
Keywords
GB/T 2912.1-2009, GB 2912.1-2009, GBT 2912.1-2009, GB/T2912.1-2009, GB/T 2912.1, GB/T2912.1, GB2912.1-2009, GB 2912.1, GB2912.1, GBT2912.1-2009, GBT 2912.1, GBT2912.1
Introduction of GB/T 2912.1-2009
Warning: the personnel using this Part of GB/T 2912 shall have practical experiences in regular laboratory work. This Part does not point out all the possible safety problems. Users have the responsibility to take appropriate safety and health measures and also ensure meeting the conditions specified in relevant regulations of the State. 1 Scope This Part of GB/T 2912 specifies a method for determining the amount of free formaldehyde extracted through water extraction method and partly through hydrolysis. This Part is applicable to the textile samples in any form. This Part is applicable to the textiles with free formaldehyde content between 20mg/kg~3500 mg/kg. The lower limit is 20 mg/kg. Below this limit the result is reported as 'not detectable'. 2 Normative References The following standards contain provisions which, through reference in this Part of GB/T 2912, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding correction to), or revisions of, any of these publications do not apply. However, the parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards. For undated references, the latest edition of the normative document referred to applies. GB/T 6529 Textiles-Standard atmospheres for conditioning and testing (GB/T 6529-2008, ISO 139:2005, MOD) GB/T 6682 Water for analytical laboratory use - Specification and test methods (GB/T 6682-2008, ISO 3696:1987, MOD) GB/T 11415 Laboratory sintered (fritted) filters-Porosity grading, classification and designation (GB/T 11415-1989, ISO 4793:1980, NEQ) 3 Principle Specimen is extracted in the water bath at 40°C for a certain time. After the extraction liquid develops by the acetylacetone, the absorbance of formaldehyde in the color reagent is determined by the spectrophotometer under 412 nm wave length. The results are compared with the standard formaldehyde working curve. The content of free formaldehyde in the sample is then calculated. 4 Reagents All reagents shall be analytical reagent quality. 4.1 Distilled water or grade 3 water Complying with GB/T 6682 4.2 Acetylacetone reagent (Nash reagent) Dissolve 150g of ammonium acetate in about 800mL of water, add 3mL of glacial acetic acid and 2mL of acetylacetone, transfer into a 1000mL volumetric flask and make up to the mark with water, store in a brown bottle. Note: the reagent darkens in color slightly on standing over the first 12 h, for this reason the reagent should be held 12 h before use. The validity is 6 weeks. Since the sensitivity may change slightly over a long period of time, it is good practice to run a calibration curve weekly to correct for slight changes in the standard curve. 4.3 Formaldehyde solution Approximately 37% (mass concentration). 4.4 Ethanolic solution of dimedone Prepare by dissolving 1g of dimedone (dimethyl-dihydro-resorcinol or 5,5-diraethyl-cyclohexanedione) in ethanol and by diluting the solution with ethanol to make 100mL. Prepare immediately before use.
Contents of GB/T 2912.1-2009
Foreword i 1 Scope 2 Normative References 3 Principle 4 Reagents 5 Apparatus 6 Preparation of Formaldehyde Standard Solution and Standard Curve 7 Specimen Preparation 8 Procedures 9 Calculation and Expression of the Results 10 Test Report Appendix A (Normative) Standardization 0f Formaldehyde Stock Solution - Sodium Sulfite Method Appendix B (Normative) Standardization of Formaldehyde Stock Solution - Iodometry Appendix C (Informative) Information on Accuracy of the Method
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Keywords:
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