GB/T 2910.12-2023 PDF EnglishUS$170.00 · In stock · Download in 9 seconds
GB/T 2910.12-2023: Textiles - Quantitative chemical analysis - Part 12: Mixtures of acrylic, certain modacrylics, certain chlorofibres, certain elastane fibres with certain other fibres(method using dimethylformamide) 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 2910.12: Historical versions
Similar standardsGB/T 2910.12-2023: Textiles - Quantitative chemical analysis - Part 12: Mixtures of acrylic, certain modacrylics, certain chlorofibres, certain elastane fibres with certain other fibres(method using dimethylformamide)---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/GBT2910.12-2023 GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 59.080.01 CCS W 04 GB/T 2910.12-2023 Replacing GB/T 2910.12-2009 Textiles - Quantitative chemical analysis - Part 12: Mixtures of acrylic, certain modacrylics, certain chlorofibres, certain elastane fibres with certain other fibres (method using dimethylformamide) (ISO 1833-12:2020, MOD) ISSUED ON: AUGUST 06, 2023 IMPLEMENTED ON: MARCH 01, 2024 Issued by: State Administration for Market Regulation; Standardization Administration of the People’s Republic of China. Table of ContentsForeword ... 3 Introduction ... 7 1 Scope ... 8 2 Normative references ... 8 3 Terms and definitions ... 8 4 Principles ... 9 5 Reagents ... 9 6 Apparatus ... 9 7 Test procedure ... 9 8 Calculation and expression of results ... 10 9 Precision ... 10 Bibliography ... 11ForewordThis document was drafted in accordance with the provisions of GB/T 1.1-2020 “Directives for standardization - Part 1: Rules for the structure and drafting of standardizing documents”. This document is Part 12 of GB/T 2910 “Textiles - Quantitative chemical analysis”. GB/T 2910 has released the following parts: - Part 1: General principles of testing; - Part 2: Ternary fibre mixture; - Part 3: Mixtures of acetate and certain other fibres (method using acetone); - Part 4: Mixtures of certain protein fibres with certain other fibres (method using hypochlorite); - Part 5: Mixtures of viscose, cupro or modal and cotton fibres (method using sodium zincate); - Part 6: Mixtures of viscose or certain types of cupro or modal or lyocell and cotton fibres (method using formic acid and zinc chloride); - Part 7: Mixtures of polyamide and certain other fibres (method using formic acid); - Part 8: Mixtures of acetate and triacetate fibres (method using acetone); - Part 9: Mixtures of acetate and triacetate fibres (method using benzyl alcohol); - Part 10: Mixtures of triacetate or polylactide and certain other fibres (method using dichloromethane); - Part 11: Mixtures of cellulose and polyester fibres (method using sulfuric acid); - Part 12: Mixtures of acrylic, certain modacrylics, certain chlorofibres, certain elastane fibres with certain other fibres (method using dimethylformamide); - Part 13: Mixtures of certain chlorofibers and certain other fibers (method using carbon disulfide /acetone); - Part 14: Mixtures of acetate and certain chlorofibres (method using acetic acid); - Part 15: Mixtures of jute and certain animal fibres (method by determining nitrogen content); - Part 16: Mixtures of polypropylene and certain other fibres (method using xylene); - Part 17: Mixtures of chlorofibers (homopolymers of vinyl chloride) and certain other fibers (method using sulfuric acid); - Part 18: Mixtures of silk and wool or hair (method using sulfuric acid); - Part 19: Mixtures of cellulose fibres and asbestos (method by heating); - Part 20: Mixtures of elastane and some other fibers (method of using dimethylacetamide); - Part 21: Mixtures of chlorofibers, certain modacrylics, certain elastanes, acetates, triacetates and certain other fibers (method using cyclohexanone); - Part 22: Mixtures of viscose or certain types of cupro or modal or lyocell and flax of ramie fibres (method using formic acid and zinc chloride); - Part 23: Mixtures of polyethylene and polypropylene (method using cyclohexanone); - Part 24: Mixtures of polyester and some other fibers (method using phenol and tetrachloroethane); - Part 25: Mixtures of polyester and certain other fibres (method using trichloroacetic acid and chloroform); - Part 26: Mixtures of melamine and cotton or aramide fibers (method using hot formic acid); - Part 101: Mixtures of soybean protein composite fibre and certain other fibers. This document replaces GB/T 2910.12-2009 “Textiles - Quantitative chemical analysis - Part 12: Mixtures of acrylic, certain modacrylic, certain chlorofibres, certain elastanes and certain other fibres (method using dimethylformamide)”, compared with GB/T 2910.12-2009, in addition to structural adjustments and editorial changes, the main technical changes are as follows: - In the scope, ADD mulberry silk, lyocell fibres, polypropylene fibres, elastiomultiester fibres, elastolefin fibres, melamine fibres, polypropylene/ polyamide bicomponent fibres, polyacrylate fibres; MODIFY animal fibres TO wool and other animal hair fibres; MODIFY cotton (raw cotton, bleached cotton, dyed cotton) TO cotton; CLARIFY certain elastanes to certain elastane fibres; ADD a note (see Clause 1 of this document, Clause 1 of the 2009 edition); - In the scope, MODIFY “This method can also be used for animal fibres, wool and silk dyed by pre-metal complex dyeing, but not applicable for post-metal complex dyed ones.” TO “This document does not apply to textiles containing wool, other animal hair fibres and mulberry silk dyed with chromium based mordant dyes.” (see Clause 1 of this document, Clause 1 of the 2009 edition); Textiles - Quantitative chemical analysis - Part 12: Mixtures of acrylic, certain modacrylics, certain chlorofibres, certain elastane fibres with certain other fibres (method using dimethylformamide)1 ScopeThis document describes a method using dimethylformamide to determine the content of acrylic, modacrylics, chlorofibres or elastane fibres in the following bicomponent mixtures, after removing non-fibrous matter: - acrylic, certain modacrylics, certain chlorofibres, certain elastane fibres; and - wool, other animal hair fibres, mulberry silk, cotton, viscose fibres, cupro fibres, modal fibres, lyocell fibres, polyamide fibres, polyester fibres, polypropylene fibres, elastiomultiester fibres, elastolefin fibres, melamine fibres, polypropylene/ polyamide bicomponent fibres, polyacrylate fibres and glass fibres. This document does not apply to textiles containing wool, other animal hair fibres and mulberry silk dyed with chromium based mordant dyes. NOTE 1: ISO 16373-1 gives the dyestuff identification method. NOTE 2: This method will cause great damage to some polyester fibres with a sheath-core structure (low melting point polyester/polyester bicomponent fibres) in the filled flakes. Observe the state of the remaining fibres after dissolution to confirm whether this method is applicable.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 2910.1 Textiles - Quantitative chemical analysis - Part 1: General principles of testing (GB/T 2910.1-2009, ISO 1833-1: 2006, IDT)3 Terms and definitionsThere are no terms or definitions to be defined in this document. FILTER the liquid through a glass sand core crucible of known dry mass, retaining the residue in the conical flask. ADD another 60 mL of dimethylformamide; PLACE it in a water bath heating equipment at 90 ℃ ~ 95 ℃ for 30 minutes. During this period, shake gently by hand at intervals of about 10 minutes. FILTER the residue in the conical flask into a glass sand core crucible, DRAIN the liquid by suction; USE dimethylformamide to wash the residue in the conical flask into the glass sand core crucible, DRAIN the liquid by suction. USE about 1 L of hot water of 70 ℃ ~ 80 ℃ to wash the residue; FILL the glass sand core crucible with hot water for each cleaning. The liquid is first drained under the action of gravity and then by suction. If gravity drainage is too slow, use slight suction. Finally, the glass sand core crucible and residue are dried, cooled, and weighed.8 Calculation and expression of resultsThe calculation and expression of results are in accordance with GB/T 2910.1. The mass change correction coefficient d value of wool, cotton, viscose fibres, cupro fibres, modal fibres, lyocell fibres, polyamide fibres, polyester fibres, elastomultiester fibres, melamine fibres and polyacrylate fibres is 1.01, and the value of the rest is 1.00.9 PrecisionFor a homogeneous mixture of textile materials, at a confidence level of 95 %, the confidence limits of the test results obtained by this method does not exceed ±1 %. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of English version of GB/T 2910.12-2023 be delivered?Answer: The full copy PDF of English version of GB/T 2910.12-2023 can be downloaded in 9 seconds, and it will also be emailed to you in 9 seconds (double mechanisms to ensure the delivery reliably), with PDF-invoice.Question 2: Can I share the purchased PDF of GB/T 2910.12-2023_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 2910.12-2023_English will be deemed to be sold to your employer/organization who actually paid for it, including your colleagues and your employer's intranet.Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. www.ChineseStandard.us -- GB/T 2910.12-2023 -- Click this link and select your country/currency to pay, the exact amount in your currency will be printed on the invoice. Full PDF will also be downloaded/emailed in 9 seconds.Question 5: Should I purchase the latest version GB/T 2910.12-2023?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 2910.12-2023 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.How to buy and download a true PDF of English version of GB/T 2910.12-2023?A step-by-step guide to download PDF of GB/T 2910.12-2023_EnglishStep 1: Visit website https://www.ChineseStandard.net (Pay in USD), or https://www.ChineseStandard.us (Pay in any currencies such as Euro, KRW, JPY, AUD).Step 2: Search keyword "GB/T 2910.12-2023". Step 3: Click "Add to Cart". If multiple PDFs are required, repeat steps 2 and 3 to add up to 12 PDFs to cart. Step 4: Select payment option (Via payment agents Stripe or PayPal). Step 5: Customize Tax Invoice -- Fill up your email etc. Step 6: Click "Checkout". Step 7: Make payment by credit card, PayPal, Google Pay etc. After the payment is completed and in 9 seconds, you will receive 2 emails attached with the purchased PDFs and PDF-invoice, respectively. Step 8: Optional -- Go to download PDF. Step 9: Optional -- Click Open/Download PDF to download PDFs and invoice. See screenshots for above steps: Steps 1~3 Steps 4~6 Step 7 Step 8 Step 9 |
