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GB/T 6020-2008 English PDF

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GB/T 6020-2008: Butadiene for industrial use -- Determination of tert-butyl-catechol (TBC)
Status: Valid

GB/T 6020: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 6020-2008English229 Add to Cart 3 days [Need to translate] Butadiene for industrial use -- Determination of tert-butyl-catechol (TBC) Valid GB/T 6020-2008
GB/T 6020-1999English319 Add to Cart 3 days [Need to translate] Butadiene for industrial use-Determination of tert-butyl-catechol (TBC) (4- (1, 1-dimethylethyl)-1, 2-benzenediol)-Spectrometric method Obsolete GB/T 6020-1999
GB/T 6020-1985EnglishRFQ ASK 3 days [Need to translate] Butadiene for industrial use--Determination of tert-butylcatechol (TBC) Obsolete GB/T 6020-1985

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Basic data

Standard ID GB/T 6020-2008 (GB/T6020-2008)
Description (Translated English) Butadiene for industrial use -- Determination of tert-butyl-catechol (TBC)
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard G15
Classification of International Standard 71.080.10
Word Count Estimation 10,169
Date of Issue 2008-06-19
Date of Implementation 2009-02-01
Older Standard (superseded by this standard) GB/T 6020-1999; GB/T 12702-1999
Quoted Standard GB/T 8170; GB/T 6682; GB/T 13290
Adopted Standard ASTM D1157-1991 (2004), MOD
Regulation (derived from) National Standard Approval Announcement 2008 No.10 (Total No.123)
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 industrial butadiene butyl catechol [ that is, 4-(1, 1 dimethyl- ethyl) -1, 2-hydroquinone ] spectrophotometric assay and HPLC. This standard spectrophotometric determination of the applicable range of 1mg/kg ~ 300mg/kg, HPLC determination of the applicable range of 1mg/kg ~ 250mg/kg. This standard is not intended to illustrate its use of all safety -related issues. Therefore, the user has the responsibility to take appropriate safety and protection measures to ensure compliance with the relevant national regulations.

GB/T 6020-2008: Butadiene for industrial use -- Determination of tert-butyl-catechol (TBC)

---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.
Butadiene for industrial use. Determination of tert-butyl-catechol (TBC) ICS 71.080.10 G15 National Standards of People's Republic of China Replacing GB/T 6020-1999, GB/T 12702-1999 Industrial tert - butyl catechol (TBC) Determination Posted 2008-06-19 2009-02-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This revised standard adopts ASTMD1157.1991 (2004) "Determination of light hydrocarbons in t-butyl catechol (TBC) standard Standard Test Method "(in English), this Standard and structural differences ASTMD1157 in Appendix A. This standard ASTMD1157.1991 (2004) of the main differences are. --- Increased liquid chromatography; --- Measured by the scope of ASTMD1157 prescribed 50mg/kg ~ 500mg/kg to 1mg/kg ~ 300mg/kg; --- Calibration curve TBC directly to the quality of the abscissa; --- Introduction of density in the results calculation. This standard replaces GB/T 6020-1999 "industrial use of tert - butyl catechol (TBC) spectrophotometric determination" and GB/T 12702-1999 "industrial use of tert - butyl catechol (TBC) High performance liquid chromatography." This standard spectrometry and GB/T 6020-1999 The main differences are as follows. --- The name was changed to "industrial use of tert - butyl catechol (TBC) Measurement"; --- The measurement process of the reference solution for the reunification of distilled water. This standard HPLC and GB/T 12702-1999 main differences are as follows. --- The name was changed to "industrial use of tert - butyl catechol (TBC) Measurement"; --- Chromatographic conditions in the original specifications and particle size column has been modified. Appendix A of this standard is an informative annex. The standard proposed by China Petroleum and Chemical Corporation. This standard by the National Standardization Technical Committee Petrochemical Chemical Club (SAC/TC63/SC4) centralized. This standard was drafted. China Petroleum & Chemical Corporation Shanghai Research Institute of Petrochemical. The main drafters of this standard. Zhuang Haiqing. This standard replaces the standards previously issued as follows. --- GB/T 6020-1985, GB/T 6020-1999; --- GB/T 12702-1990, GB/T 12702-1999. Industrial tert - butyl catechol (TBC) Determination

1 Scope

1.1 standard provides industry with tert - butyl catechol [ie, 4- (1,1-dimethyl-ethyl) -1,2-hydroquinone] measured spectral Spectrophotometry and high performance liquid chromatography. This standard applies spectrophotometric measurement range of 1mg/kg ~ 300mg/kg, high performance liquid chromatography Spectroscopy measurement range applies to 1mg/kg ~ 250mg/kg. 1.2 This standard is not intended to illustrate its use of all safety-related issues. Therefore, the user has the responsibility to take appropriate safety and prevention Protective measures to ensure compliance with the provisions of the relevant national regulations.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequently Some amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Study whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. GB/T 8170 numerical rounding rules GB/T 6682 analytical laboratory use specifications and test methods (GB/T 6682-2008, ISO 3639. 1987, MOD) GB/T 13290 Industrial liquid propylene and butadiene sampling method

3 spectrophotometry

3.1 Method summary Butadiene After evaporation, the remaining residue was dissolved with water and an excess of ferric chloride. At 425nm wavelength, with a spectrophotometer Yellow complex was measured by absorbance and the calibration curve for determination of the content of TBC. 3.2 Reagents and materials The method used reagents were analytical grade, third grade water as the water requirements of GB/T 6682 regulations. 3.2.1 Ethanol. 95% (volume fraction). 3.2.2 hydrochloric acid (density 1.19g/mL). 3.2.3 ferric chloride solution. Weigh 20.0g of ferric chloride (FeCl3 · 6H2O), with 95% ethanol (3.2.1) dissolved moved 1000mL volumetric flask, was added 9.2mL of hydrochloric acid (3.2.2), with 95% ethanol diluted to the mark. 3.2.4 t-butyl catechol (TBC) standard solution. TBC standard solution 3.2.4.1 6.7mg/mL for. Weigh 0.67gTBC (accurate to 0.0001g), was dissolved in ethanol 10mL95% , And transferred to 100mL volumetric flask, dilute with water to the mark. This solution is unstable and must be formulated immediately prior to use. 3.2.4.2 0.67mg/TBC mL of the standard solution. A standard solution TBC 6.7mg/mL of the diluted 10-fold with water, and mix. this Unstable solution shall be formulated immediately prior to use. Note. TBC potentially harmful, can cause skin irritation or burns, it can be absorbed through the skin and may cause harm to the respiratory system, swallowing May cause fatal harm retropharyngeal. Avoid contact with the eyes should be, otherwise it will burn eye tissue damage eyesight. Should pay attention to ventilation, should be stored Flammable liquids stored in the area. 3.3 Instrument 3.3.1 Spectrophotometer. with 1cm absorption cell.

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