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GB 28308-2012 English PDF

GB 28308-2012_English: PDF (GB28308-2012)
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GB 28308-2012English90 Add to Cart 0--9 seconds. Auto-delivery National food safety standard -- Food additive -- Vegetable carbon black Valid GB 28308-2012


BASIC DATA
Standard ID GB 28308-2012 (GB28308-2012)
Description (Translated English) National food safety standard - Food additive - Vegetable carbon black
Sector / Industry National Standard
Classification of Chinese Standard C54;X40
Classification of International Standard 67.220.20
Word Count Estimation 7,759
Regulation (derived from) Ministry of Health Bulletin No. 7 of 2012
Issuing agency(ies) Ministry of Health of the People's Republic of China
Summary This Chinese standard applies to plants as raw material, charring, refining and food additives produced carbon black plants.


GB 28308-2012 GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA GB 28308 National Food Safety Standard – Food Additive – Vegetable Carbon Black 食品添加剂 植物炭黑 ISSUED ON. APRIL 25, 2012 IMPLEMENTED ON. JUNE 25, 2012 Issued by. Ministry of Health of the People's Republic of China Table of Contents 1 Application Scope ... 3  2 Chemical Name, Molecular Formula and Relative Molecular Mass ... 3  3 Technical Requirements ... 3  Annex A Test Methods ... 5  Annex A Test Methods A.1 General Unless specified otherwise, all reagents used for this Standard are analytically pure reagents and the water is water grade 3 specified in GB/T 6682-2008. Unless specified otherwise, the standard titration solutions used for this Standard and the standard solutions, preparations and products used for the determination of impurities shall be prepared in accordance with GB/T 601, GB/T 602 and GB/T 603. The solutions used in the test refers to aqueous solutions when the solvent is not indicated for the preparation. A.2 Identification test A.2.1 Solubility test Weigh 0.1 g of sample; add 100 mL of water; shake up and allow to stand for 10 min. The solution shall show no colour. Weigh 0.1 g of sample; add 100 mL of cyclohexane; shake up and allow to stand for 10 min. The solution shall show no colour. A.2.2 Burning test Heat sample slowly to red without direct firing. A.3 Determination of loss on drying A.3.1 Apparatus A.3.1.1 Weighing bottle. Φ 30 mm ~ 40 mm. A.3.1.2 Constant temperature drying oven. A.3.2 Analytical procedure Weigh about 2 g of sample, accurate to 0.000 1 g; place in a constant weighing bottle in a constant temperature drying oven at 120°C ± 2°C; dry in the constant drying oven at 120°C ± 2°C for 4 h; take out sample and cool in a desiccator to room temperature. A.3.3 Calculation of results Loss on drying is calculated by mass fraction w1; the value is expressed in %; it is calculated in accordance with Formula A.1. A.5.1 Apparatus A.5.1.1 Porcelain crucible. 30 mL. A.5.1.2 High-temperature electric furnace. A.5.2 Analytical procedure Weigh about 1 g of sample, accurate to 0.000 1 g; place in a crucible burned to constant weight at 625°C ± 20°C. Place the crucible into a high-temperature electric furnace at temperature not exceeding 300°C; open the crucible cover; increase temperature gradually; ash to constant weight at 625°C ± 20°C. A.5.3 Ash content is calculated by mass fraction w3; the value is expressed in %; it is calculated in accordance with Formula A.3. where, m4 — the value of ash mass, in g; m5 — the value of sample mass, in g. The test result is subjected to the arithmetic mean of parallel determination results. The ratio of the absolute difference obtained from two independent determination results under repeatable conditions to the arithmetic mean value is not greater than 5%. A.6 Determination of alkali soluble colour pigments A.6.1 Reagents and materials Sodium hydroxide solution. 1 mol/L. A.6.2 Analytical procedure Weigh about 2 g of sample, accurate to 0.000 1 g; place in a 100 mL conical flask; add 20 mL of sodium hydroxide solution; heat slowly to boiling; filter after cooling. The filtrate shall show no colour, i.e. it passes the test. A.7 Determination of higher aromatic hydrocarbon A.7.1 Reagents and materials A.7.1.1 Cyclohexane. A.7.1.2 Quinine sulfate. ......

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