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GB/T 9104-2022 English PDF

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US$359.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 9104-2022: Test methods for industrial stearic acids
Status: Valid

GB/T 9104: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 9104-2022	359	Add to Cart	4 days	Test methods for industrial stearic acids	Valid
GB/T 9104-2008	145	Add to Cart	Auto, < 3 mins	Test methods for industrial stearic acids	Obsolete
GB/T 9104.1-1988	199	Add to Cart	2 days	The test methods for industrial stearic acids--Determination of iodine value	Obsolete

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Basic data

Standard ID: GB/T 9104-2022 (GB/T9104-2022)
Description (Translated English): Test methods for industrial stearic acids
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: Y43
Classification of International Standard: 71.100.40
Word Count Estimation: 18,133
Date of Issue: 2022-12-30
Date of Implementation: 2022-12-30
Older Standard (superseded by this standard): GB/T 9104-2008
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 9104-2022: Test methods for industrial stearic acids

---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.
ICS 71.100.40 CCSY43 National Standards of People's Republic of China Replacing GB/T 9104-2008 Test method for industrial stearic acid Posted on 2022-12-30 2022-12-30 implementation State Administration for Market Regulation Released by the National Standardization Management Committee

Preface III 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Determination of iodine value 1 5 Determination of saponification value 3 6 Determination of acid value 4 7 Determination of color 5 8 Determination of freezing point 6 9 Determination of moisture 7 10 Determination of inorganic acids 8 11 Determination of ash content 9 12 Determination of composition 9 13 Test report 13

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 for Standardization Documents" drafting. This document replaces GB/T 9104-2008 "Test methods for industrial stearic acid". Compared with GB/T 9104-2008, except for structural adjustment and Apart from editorial changes, the main technical changes are as follows. a) Added the preparation method of iodine chloride solution (Wechsler's solution) in the determination of iodine value (method 2) [see 4.2.10b)]; b) Changed the amount of some reagents used in the determination of iodine value (see 4.4, 4.4 of the.2008 edition); c) Changed the amount of some reagents used in the determination of saponification value (see 5.3, 5.3 of the.2008 edition); d) Added the moisture determination method Karl Fischer method (see 9.2); e) Added the composition determination method capillary column method (see 12.3). Please note that some contents of this document may refer to patents. The issuing agency of this document assumes no responsibility for identifying patents. This document is proposed by China National Light Industry Council. This document is under the jurisdiction of the National Standardization Technical Committee on Surfactants and Detergents (SAC/TC272). This document is drafted by. China Research Institute of Daily Chemistry Co., Ltd., Zanyu Technology Group Co., Ltd., Hangzhou Zanyu Oil Technology Co., Ltd., Jiawenli (Fujian) Cosmetics Co., Ltd., Huzhou Linghu Xinwang Chemical Co., Ltd., Sichuan Tianyu Oleochemical Co., Ltd., China Light Daily Chemical Inspection and Certification Co., Ltd. The main drafters of this document. Yao Chenzhi, Lou Dongping, Wang Kan, Chen Qingjun, Chen Linlin, Shen Yunfei, Yang Guohua, Li Xiaohui. The previous versions of the documents replaced by this document are as follows. ---It was first released as GB/T 9104.1~9104.9-1988 in 1988, and was first revised as GB/T 9104-2008 in.2008; --- This is the second revision. Test method for industrial stearic acid

1 Scope

This document describes the test methods for industrial stearic acid, including iodine value, saponification value, acid value, color, freezing point, moisture, inorganic acid, ash, Composition method. This document is applicable to industrial stearic acid (main component Divided into the determination of octadecanoic acid and hexadecanoic acid).

2 Normative references

The contents of the following documents constitute the essential provisions of this document through normative references in the text. Among them, dated references For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document. GB/T 6283 Determination of moisture content in chemical products Karl Fischer method (general method) GB/T 6682 Analytical laboratory water specifications and test methods QB/T 2739-2005 Preparation of test solutions for titration analysis (volume analysis) of common test methods for washing products

3 Terms and Definitions

The following terms and definitions apply to this document. 3.1 iodine value iodine value Halogen absorbed by 100g stearic acid sample. Note. Expressed in grams of equivalent iodine. 3.2 Saponification value saponification value Under the specified test conditions, the number of milligrams of potassium hydroxide consumed to saponify 1g of stearic acid sample. 3.3 Acid value acid value The number of milligrams of potassium hydroxide consumed to neutralize 1 g of stearic acid sample. 3.4 Freezing point freezing point According to the prescribed procedure, the molten stearic acid is cooled to below the melting point and the temperature at which it solidifies.

4 Determination of iodine value

4.1 Principle Addition reaction occurs between iodine chloride and unsaturated acid in stearic acid, and excess iodine chloride and iodine content are titrated with sodium thiosulfate standard titration solution. Calculate the volume of sodium thiosulfate standard titration solution equivalent to the iodine chloride consumed by the unsaturated acid reaction in stearic acid, and then calculate ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 9104-2022_English be delivered?

Answer: Upon your order, we will start to translate GB/T 9104-2022_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 9104-2022_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 9104-2022_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.

Question 5: Should I purchase the latest version GB/T 9104-2022?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 9104-2022 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.