GB 26403-2011 English PDF

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US$169.00 · In stock
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GB 26403-2011: National food safety standards of food additives TBHQ
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB 26403-2011	169	Add to Cart	3 days	National food safety standards of food additives TBHQ	Valid

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Basic data

Standard ID: GB 26403-2011 (GB26403-2011)
Description (Translated English): National food safety standards of food additives TBHQ
Sector / Industry: National Standard
Classification of Chinese Standard: C54;X40
Classification of International Standard: 67.220.20
Word Count Estimation: 7,744
Date of Issue: 2011-03-15
Date of Implementation: 2011-05-15
Regulation (derived from): Ministry of Health Bulletin No. 7 of 2011
Issuing agency(ies): Ministry of Health of the People's Republic of China
Summary: This Chinese standard applies to hydroquinone as raw material, by alkylation reaction of food additive TBHQ (referred TBHQ).

GB 26403-2011: National food safety standards of food additives TBHQ

---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.
National food safety standards of food additives TBHQ National Standards of People's Republic of China National standards for food safety Food Additives Tertin Hydroquinone 2011-03-15 release 2011-05-15 implementation Issued by the Ministry of Health of the People's Republic of China National standards for food safety Food Additives Tertin Hydroquinone

1 Scope

This standard is applicable to the use of hydroquinone as raw material, the alkylation reaction of the food additive t-butyl hydroquinone (referred to as TBHQ). 2 molecular formula, structural formula and relative molecular mass 2.1 Molecular formula C10H14O2 2.2 Structural formula 2.3 Relative molecular mass 166.22 (according to the.2007 International Relative Atomic Quality)

3 technical requirements

3.1 sensory requirements. should be consistent with the provisions of Table 1. Table 1 sensory requirements The project requires a test method Color white Odor has a special smell Organizational state Crystalline powder Take the appropriate amount of sample placed in a clean, dry white porcelain dish, in the natural light, Observe its color and state, and smell its taste 3.2 Physical and chemical indicators. should be consistent with the provisions of Table 2. Table 2 Physical and chemical indicators Item Index Test Method Tert-butyl hydroquinone (calculated as C10H14O2), w /% ≥ 99.0 Appendix A, A.3 Tert-butyl p-benzoquinone, w /% ≤ 0.2 Appendix A, A.3 2,5-di-tert-butyl hydroquinone, w /% ≤ 0.2 A.3 in Appendix A Hydroquinone, w /% ≤ 0.1 Appendix A, A.3 Toluene/(mg/kg) ≤ 25 Appendix A A.4 Lead (Pb)/(mg/kg) ≤ 2 GB 5009.12 Melting point/℃ 126.5 ~ 128.5 GB/T 617

Appendix A

Testing method A.1 General provisions The reagents and water used in this standard, when not specified in other requirements, refer to the analysis of pure reagents and GB/T 6682-2008 in the provisions of the three Water level. Standard titration solution used in the test, the standard solution for the determination of impurities, preparations and products, without any other requirements, GB/T 601, GB/T 602, GB/T 603. The solution used in the test refers to water when it is not specified with the formulation of the solvent Solution. A.2 Identification test 4 mg to 8 mg of the sample was dissolved in 1 mL of methanol, and then a few drops of 25% aqueous dimethylamine solution was added and the solution changed from light red to red Color without being restored. A.3 Determination of tert-butyl hydroquinone, p-butyl p-benzoquinone, 2,5-dibutyl hydroquinone and hydroquinone A.3.1 Reagents and materials A.3.1.1 Acetone. A.3.1.2 Hydroquinone standards. known purity. A.3.1.3 Tertin hydroquinone standard. Purity ≥99%. A.3.1.4 tert-butyl p-benzoquinone standard. purity ≥99%. A.3.1.5 2,5-di-tert-butyl hydroquinone standard. purity ≥ 99%. A.3.2 Instruments and equipment Gas chromatograph. equipped with hydrogen flame ionization detector and automatic integrator. A.3.3 Reference chromatographic conditions A.3.3.1 Column. HP-5 Elastic Quartz Capillary Column with 30m in length, 0.32mm in inner diameter, 0.25μm in coating thickness, or others The efficiency of the column. A.3.3.2 Air flow rate. The carrier gas is high purity nitrogen and the wire speed is 30cm/s. A.3.3.3 Temperature. column temperature 220 ℃, inlet 250 ℃, detector 300 ℃. A.3.3.4 Split ratio. 20. 1. A.3.3.5 Injection volume. 1 μL. A.3.4 Analysis steps A.3.4.1 Preparation of standard solutions Respectively, weighing 10mg hydroquinone, tert-butyl hydroquinone, p-butyl p-benzoquinone and 2,5-di-tert-butyl hydroquinone standard, dissolved with acetone, Were transferred to 10mL volumetric flask, dilute the volume to the scale, shake. A.3.4.2 Preparation of sample solution Weigh 0.2g sample, dissolved with acetone, transferred to 10mL volumetric flask, dilute the volume to the scale, shake. A.3.4.3 Determination Under the conditions of A.3.3 reference chromatography, the standard solution was analyzed by gas chromatography to determine the retention time of each standard. 1 μL of sample solution was subjected to chromatographic analysis. A.3.5 Calculation of results The contents of t-butyl hydroquinone, p-butyl-p-benzoquinone, 2,5-dibutyl hydroquinone and hydroquinone were calculated by area normalization. The results show that the relative deviation of the results of the determination of tert-butyl hydroquinone is less than 0.2% The relative deviation of other substances is less than 2%. A.4 Determination of Toluene A.4.1 Reagents and materials A.4.1.1 Octanol. A.4.1.2 Toluene. A.4.2 Instruments and equipment Gas chromatograph. equipped with hydrogen flame ionization detector. A.4.3 Reference chromatographic conditions A.4.3.1 Column. packed column made of stainless steel, 3.66m in length, 3.18mm in outer diameter, silicone in the form of SE-30, Diatoport S (DiatoportS) (180 μm to 250 μm), by weight, is 10. 100; or other equivalent color Column. A.4.3.2 Carrier gas is nitrogen, air flow rate. 25mL/min. A.4.3.3 Temperature. column temperature 70 ℃, inlet 275 ℃, detector 300 ℃. A.4.3.4 Split ratio. 50. 1. A.4.3.5 The injection volume is 1 μL. A.4.4 Analysis steps A.4.4.1 Preparation of sample solution Weigh about 2g sample, accurate to 0.0002g, transferred to 10mL volumetric flask, dissolved with octanol, and diluted volume to the volume, shake Uniform, accurate concentration of cS. A.4.4.2 Preparation of standard solutions Prepare an octanol solution containing 50 μg of toluene per milliliter, with an exact concentration of cR. A.4.4.3 Determination The standard solution and sample solution were chromatographed under A.4.3 reference chromatography. Measured on the chromatogram of the standard solution The peak height (HR) of toluene and the other peaks did not affect the analysis. Likewise, the peak height (HS) of toluene was measured on the chromatogram of the sample solution. A.4.5 Calculation of results Toluene content in toluene by the mass fraction w, the value in milligrams per kilogram (mg/kg), according to formula (A.1). w = (HS/HR) x (cR/cS) (A.1) Where. HS --- the value of the toluene peak in the chromatogram of the sample liquid; HR --- standard solution chromatogram toluene high peak value; cR --- the concentration of toluene in the standard solution, in micrograms per milliliter (μg/mL); cS - the concentration of the sample solution in grams per milliliter (g/mL). The experimental results are based on the arithmetic mean of the parallel measurement results, and the relative deviation of the parallel measurement results is less than 10%. ......

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Question 1: How long will the true-PDF of GB 26403-2011_English be delivered?

Answer: Upon your order, we will start to translate GB 26403-2011_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 26403-2011_English with my colleagues?

Answer: Yes. The purchased PDF of GB 26403-2011_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.