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GB/T 1815-2019 English PDF

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US$199.00 · In stock
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GB/T 1815-2019: Determination for the bromine number and bromine index of benzol products
Status: Valid

GB/T 1815: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 1815-2019	199	Add to Cart	3 days	Determination for the bromine number and bromine index of benzol products	Valid
GB/T 1815-1997	179	Add to Cart	2 days	Determination for the bromine number of benzole products	Obsolete
GB 1815-1979	199	Add to Cart	2 days	Determination of the bromine valence for benzene-homologue products	Obsolete

Similar standards

GB/T 18255 GB/T 2293 GB/T 1816 GB/T 2282

Basic data

Standard ID: GB/T 1815-2019 (GB/T1815-2019)
Description (Translated English): Determination for the bromine number and bromine index of benzol products
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G18
Classification of International Standard: 71.080
Word Count Estimation: 10,163
Date of Issue: 2019-10-18
Date of Implementation: 2020-05-01
Older Standard (superseded by this standard): GB/T 1815-1997
Quoted Standard: GB/T 601; GB/T 1999; GB/T 4756
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration
Summary: This standard specifies the terms and definitions, principles, reagents, equipment and materials, sample collection and preparation, test procedures, result calculation and precision for the determination of bromine value and bromine index of benzene products. This standard applies to coking benzene, coking toluene and petroleum benzene, petroleum toluene and petroleum mixed xylene produced by catalytic reforming of crude benzene and light benzene recovered from coke oven gas by hydrogenation and rectification. Determination of bromine value and bromine index.

GB/T 1815-2019: Determination for the bromine number and bromine index of benzol products

---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 for the bromine number and bromine index of benzole products ICS 71.080 G18 National Standards of People's Republic of China Replace GB/T 1815-1997 Determination of bromine and bromine index of benzene products Published on.2019-10-18 2020-05-01 implementation State market supervision and administration China National Standardization Administration issued

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB/T 1815-1997 "Method for determination of bromine price of benzene products". This standard is mainly changed compared with GB/T 1815-1997. The following is as follows. --- Added warnings; --- Revised the scope to increase the petroleum benzene, petroleum toluene, petroleum mixed xylene produced by the catalytic reforming process of petroleum fractions (see Chapter 1, see Chapter 1 of the.1997 edition); --- Revised the normative reference document (see Chapter 2, see Chapter 2 of the.1997 edition); --- Increased bromine and bromine index definitions (see Chapter 3); --- Revised the preparation and preparation of the sample (see Chapter 7, see Chapter 6 of the.1997 edition); --- Increased method for determination of bromine index of benzene products (see Appendix A). This standard was proposed by the China Iron and Steel Association. This standard is under the jurisdiction of the National Coal Chemical Standardization Technical Committee (SAC/TC469). This standard was drafted. Angang Steel Co., Ltd., Dalian Honghe Petroleum Analysis Instrument Co., Ltd., Anshan Kexiang Instrumentation Co., Ltd. Company, Anshan Hansheng Metallurgical Equipment Co., Ltd., Metallurgical Industry Information Standards Institute. The main drafters of this standard. Zhang Mingming, Guan Yongyi, Mu Chunfeng, Wang Xiaonan, Pang Keliang, Shaoyang, Gao Le, Dong Xiaofeng, Bayan Gaole, Zhang Dapeng, Zhang Jingxi, Zheng Jingwu. The previous versions of the standards replaced by this standard are. ---GB/T 1815-1997. Determination of bromine and bromine index of benzene products Warning---Benzene products are volatile and toxic and hazardous substances. Operators should wear protective masks and other labor protection products in the fume hood. Internal operation.

1 Scope

This standard specifies the terms and definitions, principles, reagents, equipment and materials for the determination of bromine and bromine index of benzene products, and the adoption and preparation of samples. Preparation, test procedures, calculation of results and precision. This standard is applicable to coking benzene, coking toluene and petroleum fractions obtained by hydrogenation and rectification of crude benzene and light benzene recovered from coke oven gas. Determination of bromine and bromine index of petroleum benzene, petroleum toluene and petroleum mixed xylene produced by catalytic reforming process.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. Preparation of GB/T 601 chemical reagent standard titration solution GB/T 1999 Sampling method for coking oil products GB/T 4756 petroleum liquid manual sampling method

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 Bromine number brominenumber The number of grams of bromine consumed when reacting with 100 mL of the sample under specified conditions is expressed in g/100 mL. 3.2 Bromine index bromineindex The number of milligrams of bromine consumed when reacting with 100 g of the sample under specified conditions is expressed in mg/100 g.

4 Principle

In the presence of an acidic medium, the unsaturated compound in the aromatic hydrocarbon reacts with bromine, and the excess bromine reacts with potassium iodide to form iodine, and then sulfur is used. Sodium sulfate was titrated to the end point. The results are expressed in grams (mg) of bromine consumed in 100 mL (100 g) of the sample.

5 reagent

5.1 Bromine standard solution. c (1/2Br2) = 0.1mol/L, prepared according to GB/T 601 regulations. 5.2 Sodium thiosulfate standard solution. c (Na2S2O3) = 0.1mol/L, prepared according to GB/T 601 regulations. 5.3 Potassium iodide solution. 25 g of potassium iodide was dissolved in 100 mL of distilled water. 5.4 Sulfuric acid solution. 1.5. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 1815-2019_English be delivered?

Answer: Upon your order, we will start to translate GB/T 1815-2019_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 1815-2019_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 1815-2019_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 1815-2019?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 1815-2019 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.