GB/T 8037-2009 English PDF

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GB/T 8037-2009: Benzol products of coal carbonization -- Test for presence of mercaptans
Status: Valid

GB/T 8037: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 8037-2009	189	Add to Cart	3 days	Benzol products of coal carbonization -- Test for presence of mercaptans	Valid
GB/T 8037-1987	199	Add to Cart	2 days	Benzol products of coal carbonization--Test for presence of mercaptans	Obsolete

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Basic data

Standard ID: GB/T 8037-2009 (GB/T8037-2009)
Description (Translated English): Benzol products of coal carbonization -- Test for presence of mercaptans
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G18
Classification of International Standard: 71.080.15
Word Count Estimation: 8,888
Date of Issue: 2009-10-30
Date of Implementation: 2010-05-01
Older Standard (superseded by this standard): GB/T 8037-1987
Quoted Standard: GB/T 1999; GB/T 6682
Adopted Standard: ISO 5275-2003, MOD
Regulation (derived from): National Standard Approval Announcement 2009 No.12 (Total No.152)
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard specifies the principles of coking benzene thiol product testing methods, reagents and materials, instrument, sampling and sample preparation, test procedures and test reports. This standard applies to coking coking toluene and xylene mercaptans and hydrogen sulfide test. More than 0. 4 % (by mass) of a sample of more than trace amounts of peroxide or carbon disulfide content does not apply to contain.

GB/T 8037-2009: Benzol products of coal carbonization -- Test for presence of mercaptans

---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.
Benzol products of coal carbonization.Test for presence of mercap tans ICS 71.080.15 G18 National Standards of People's Republic of China Replacing GB/T 8037-1987 Coking benzene products in the test methods mercaptan (ISO 5275.2003, Petroleumproductsandhydrocarbonsolvents- Detectionofthiolandothersulfurspecies-Doctortest, MOD) Posted 2009-10-30 2010-05-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This revised standard adopts ISO 5275.2003 "Petroleum products and test methods aromatic hydrocarbon solvent and thiol sulfide Dr. test" (In English). This standard is based on ISO 5275.2003 redrafted. For ease of comparison, the information in Appendix A lists the provisions of this national standard Standard Terms and international control list. The standard in the use of international standards has been modified. The technical differences between a single vertical line identifies the page in terms of which they are involved Margin. In Appendix B gives a list of the technical differences and the reasons for the reference. For ease of use, this standard also made the following editorial changes. --- "This International Standard" by "this standard"; --- Instead of using the decimal point as a decimal point ",". ","; --- Delete international standards foreword. This standard replaces GB/T 8037-1987 "Test Method coking benzene products mercaptans." The main difference compared with the standard GB/T 8037-1987 as follows. --- Increasing the "security warning", "range", "normative references" Content "results are expressed" and "Inspection Report"; --- Some units and standardized format. This standard Annex A, Annex B is informative appendix. The standard proposed by China Iron and Steel Association. This standard is under the jurisdiction of the National Steel Standardization Technical Committee. This standard is drafted by. Wuhan University of Science and Technology, Metallurgical Industry Information Standards Institute. The main drafters of this standard. Ho Xuan-ming, Zhao Minlun, Li Yao pull, Fang Hongming, Sun Wei. This standard replaces the standards previously issued as follows. --- GB/T 8037-1987. Coking benzene products in the test methods mercaptan Security Warning. This standard relates to hazardous materials, operations and equipment will be in use. This standard does not guarantee to solve all the associated Safety issues associated. Users of this standard prior to use to establish and improve the responsibility of the appropriate safety and health protection system. Toxic cadmium chloride, should make the environment toxic waste disposal.

1 Scope

This standard specifies the coking benzene products in principle mercaptan test methods, reagents and materials, instruments, sampling and sample preparation, test procedures and inspection Inspection reports. This standard applies to coking coking toluene and xylene and hydrogen sulfide test. Not to contain more than trace amounts of peroxide or Carbon disulfide content exceeds 0.4% (by mass) of a sample.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. GB/T 1999 coking oil products sampling methods GB/T 6682 analytical laboratory use specifications and test methods (GB/T 6682-2008, ISO 3696. 1987, MOD) Principle 3 Sample solution was mixed with sodium oscillation sub lead, from the change in appearance of the mixed solution to determine the presence or absence, hydrogen sulfide, elemental sulfur or peroxide The presence of the substance, and the addition of sulfur sublimation oscillation after final verification whether the thiol.

4 Reagents and materials

Unless otherwise stated, from 4.2 to 4.11 should reach analytical reagents, water purity in line with GB/T 6682 in the three water requirements. Lead acetate trihydrate 4.1 [(CH3COO) 2Pb · 3H2O], crystals. 4.2 Sodium hydroxide (NaOH), solid. 4.3 Lead Asia sodium (Dr. reagent) 25g of crystalline lead acetate trihydrate (4.1) dissolved in 200mL of distilled water, filtered and then added to 100mL contains 60g hydroxide Sodium (4.2) in aqueous solution. The mixture was heated in a boiling water bath for 30min ± 5min, diluted with water to 1000mL after cooling. Use storage solution bottle with sealing plug, such as opaque solution is filtered before use. 4.4 cadmium chloride (CdCl2). 4.5 of concentrated hydrochloric acid (HCl), mass fraction of about 36% (11mol/L). 4.6 cadmium chloride solution 100g cadmium chloride dissolved in water (4.4), was added 10mL hydrochloric acid and dilute to 1000mL. For routine analysis, 50g/L NaHCO3 solution can be used for analysis, but because the sodium sulfide is colorless, with lead acetate requires Test strips to determine whether the removal of hydrogen sulfide (see 7.2). 4.7 sublimed sulfur, dried (sealed container preservation). 4.8 potassium iodide solution (KI) KI 100g/L solution, formulated the day before use. ......

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