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GB/T 40323-2021 English PDF

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US$279.00 · In stock
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GB/T 40323-2021: Determination of octamethylcyclotetrasiloxane(D4), decamethylcyclopentasiloxane(D5) and dodecamethylcyclohexasiloxane(D6) in textile dyeing and finishing auxiliaries
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 40323-2021	279	Add to Cart	3 days	Determination of octamethylcyclotetrasiloxane(D4), decamethylcyclopentasiloxane(D5) and dodecamethylcyclohexasiloxane(D6) in textile dyeing and finishing auxiliaries	Valid

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Basic data

Standard ID: GB/T 40323-2021 (GB/T40323-2021)
Description (Translated English): Determination of octamethylcyclotetrasiloxane(D4), decamethylcyclopentasiloxane(D5) and dodecamethylcyclohexasiloxane(D6) in textile dyeing and finishing auxiliaries
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G70
Word Count Estimation: 14,189
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 40323-2021: Determination of octamethylcyclotetrasiloxane(D4), decamethylcyclopentasiloxane(D5) and dodecamethylcyclohexasiloxane(D6) in textile dyeing and finishing auxiliaries

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Determination of octamethylcyclotetrasiloxane(D4), decamethylcyclopentasiloxane(D5) and dodecamethylcyclohexasiloxane(D6) in textile dyeing and finishing auxiliaries ICS 71.100.40 CCSG70 National Standards of People's Republic of China Octamethyl ring in textile dyeing and finishing auxiliaries Tetrasiloxane (D4), decamethylcyclopentasiloxane (D5) And determination of dodecamethylcyclohexasiloxane (D6) Released on 2021-08-20 2022-03-01 implementation State Administration of Market Supervision and Administration Issued by the National Standardization Management Committee

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules of Standardization Documents" Drafting. Please note that some of the contents of this document may involve patents. The publishing agency of this article does not bear the responsibility for identifying patents. This document was proposed by the China Petroleum and Chemical Industry Federation. This document is under the jurisdiction of the National Dyestuff Standardization Technical Committee (SAC/TC134). This document was drafted by. Transchem Zhilian Co., Ltd., Hangzhou Transchem Fine Chemical Co., Ltd., Lufeng Weaving and Dyeing Co., Ltd., Nanjing Hai Guan Industrial Product Testing Center, Fujian Fiber Testing Center, Zhejiang Transchem Functional New Material Co., Ltd. The main drafters of this document. Zhao Ting, Zhao Mei, Zhou Jiahai, Lu Ke, Wu Gehui, Xu Yi, Yuan Biyun, Zhang Zhanqi, Ding Youchao, Zhu Feng, Zhao Lihui, Guo Fei, Zhong Weihao, Yu Yingzhen, Bian Li, Wang Yandi. Octamethyl ring in textile dyeing and finishing auxiliaries Tetrasiloxane (D4), decamethylcyclopentasiloxane (D5) And determination of dodecamethylcyclohexasiloxane (D6) Warning---The personnel using this document should have practical experience in formal laboratory work. This document does not indicate all possible safety issues question. The user is responsible for taking appropriate safety and health measures and ensuring compliance with the conditions stipulated by relevant national laws and regulations.

1 Scope

This document specifies the content of octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane in textile dyeing and finishing auxiliaries. test methods. This document applies to octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane in textile dyeing and finishing auxiliaries. Determination.

2 Normative references

The contents of the following documents constitute the indispensable clauses of this document through normative references in the text. Among them, dated quotations Only the version corresponding to that date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document. document. GB/T 8170-2008 Numerical rounding rules and the expression and determination of limit values

3 Terms and definitions

There are no terms and definitions that need to be defined in this document. 4 Method 1.Gas Chromatography (GC) Method 4.1 Principle Dissolve the sample with a mixed solvent of n-hexane and isopropanol, add acid to inhibit octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethyl The decomposition of cyclohexasiloxane was determined by gas chromatography equipped with a hydrogen flame ionization detector (FID) and quantified by an external standard method. 4.2 Reagents or materials Unless otherwise specified, only use reagents confirmed to be analytically pure. 4.2.1 Standard products of octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane. purity ≥96.0% (mass fraction), See Appendix A. 4.2.2 n-hexane. 4.2.3 Isopropanol. 4.2.4 Acetic acid. ≥99.5% (mass fraction). 4.2.5 Mixed solvent. The volume ratio of n-hexane and isopropanol is 1.1. 4.2.6 Acetic acid isopropanol solution. The volume ratio of acetic acid to isopropanol is 1.9. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 40323-2021_English be delivered?

Answer: Upon your order, we will start to translate GB/T 40323-2021_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 40323-2021_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 40323-2021_English will be deemed to be sold to your employer/organization who actually pays 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+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.