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GB 30614-2014: National Food Safety Standard -- Food Additives -- Calcium Oxide
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National Food Safety Standard -- Food Additives -- Calcium Oxide
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GB 30614-2014
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Basic data
| Standard ID | GB 30614-2014 (GB30614-2014) |
| Description (Translated English) | National Food Safety Standard -- Food Additives -- Calcium Oxide |
| Sector / Industry | National Standard |
| Classification of Chinese Standard | C53 |
| Classification of International Standard | 67.020 |
| Word Count Estimation | 7,741 |
| Date of Issue | 4/29/2014 |
| Date of Implementation | 11/1/2014 |
| Regulation (derived from) | National Health and Family Planning Commission Bulletin No. 7, 2014 |
| 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 use of calcium carbonate after burning prepared food additive calcium oxide. |
GB 30614-2014: National Food Safety Standard -- Food Additives -- Calcium Oxide
---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.
(Food additive calcium oxide)
National Standards of People's Republic of China
National standards for food safety
Food Additives Calcium Oxide
Released.2014-04-29
2014-11-01 implementation
People's Republic of China
National Health and Family Planning Commission released
National standards for food safety
Food Additives Calcium Oxide
1 Scope
This standard applies to the use of calcium carbonate burning after the preparation of food additives calcium oxide.
2 molecular formula and relative molecular mass
2.1 Molecular formula
CaO.
2.2 Relative molecular mass
56.08 (according to.2011 international relative atomic mass).
3 technical requirements
3.1 sensory requirements
Sensory requirements shall comply with the requirements of Table 1.
Table 1 sensory requirements
The project requires a test method
Color white or gray
State particles or powder
Take the appropriate amount of sample in a 50mL beaker and look under natural light
Color and state
3.2 Physical and chemical indicators
Physical and chemical indicators should be consistent with the provisions of Table 2.
Table 2 Physical and chemical indicators
Item Index Test Method
Calcium oxide (CaO) content (dry basis, mass fraction) /% 95.0 ~ 100.5 Appendix A A.4
Magnesium and alkali metals (mass fraction) /% ≤ 3.6 A.5
Inorganic arsenic (in As)/(mg/kg) ≤ 3 A.6
Fluorine (F)/(mg/kg) ≤ 150 A.7
Lead (Pb)/(mg/kg) ≤ 2 A.8
Acid insoluble matter (mass fraction) /% ≤ 1 A.9
Burning reduction (mass fraction) /% ≤ 10 A.10
Appendix A
Testing method
A.1 Warning
Some of the reagents used in the test methods of this standard are toxic or corrosive and should be operated with appropriate safety and protective measures.
A.2 General provisions
The reagents and water used in this standard refer to the pure reagent and the tertiary water specified in GB/T 6682 when no other requirements are specified.
Standard solution, preparation and articles for the determination of standard solutions and impurities for testing in this standard are not specified when other requirements are indicated
GB/T 601, GB/T 602, GB/T 603. The solution used refers to an aqueous solution when it is not specified with any solvent formulation.
A.3 Identification test
A.3.1 Reagents and materials
A.3.1.1 Glacial acetic acid.
A.3.1.2 Ammonium oxalate solution. 35 g/L.
A.3.1.3 Ammonia solution. 2 3.
A.3.1.4 Hydrochloric acid solution. 1 4.
A.3.1.5 methyl red indicator solution.
A.3.2 Identification method
Weigh 1g sample, add 20mL of water, add glacial acetic acid to the sample completely dissolved, then add 2 drops of methyl red indicator solution, with ammonia solution
Transferred to yellow, and then drop by adding hydrochloric acid solution to make the solution acidic and then add ammonium oxalate solution, which produces a white precipitate. This precipitate is dissolved in hydrochloric acid,
And insoluble in glacial acetic acid. With platinum wire dipped in hydrochloric acid soaked calcium salt solution, through the light flame burning brick red.
A.4 Calcium oxide (CaO) content (measured on dry basis)
A.4.1 Reagents and materials
A.4.1.1 hydrochloric acid solution. 1 4.
A.4.1.2 Sodium hydroxide solution. 40 g/L.
A.4.1.3 Standard titration solution of disodium ethylenediamine tetraacetate. c (EDTA) = 0.02 mol/L.
A.4.1.4 Calcium Carboxylic Acid Sodium Salt Indicator.
A.4.2 Analysis steps
Weigh about 0.4g according to A.10 after burning the sample, accurate to 0.0002g. Add 20mL hydrochloric acid solution to completely dissolve, all
Department transferred to the 250mL volumetric flask, add water to the mark, shake. Remove the 25 mL sample solution with a pipette and place in a 250 mL Erlenmeyer flask
, Add 30mL of water, with 50mL burette accurately add 20mL ethylenediamine tetraacetic acid disodium standard titration solution, shake and then add
Into the 15mL sodium hydroxide solution, 0.3g calcium carboxylate sodium indicator, continue with ethylenediamine tetraacetic acid disodium standard titration solution titrated to dissolved
The liquid turns from wine red to pure blue. At the same time as a blank test.
Blank test In addition to the sample, the other types of operation and addition of reagents (except for the standard titration solution) is the same as the assay.
A.4.3 Calculation of results
The mass fraction w1 of calcium oxide (CaO) content is calculated according to formula (A.1)
w1 =
(V1-V0) x c x M 250
m × 25 × 1000 ×
100% (A.1)
Where.
V1 --- titration of the sample solution consumed by ethylenediamine tetraacetic acid disodium standard titration solution in milliliters (mL);
V0 --- titration of the blank solution consumed by the disodium ethylenediamine tetraacetate standard titration solution in milliliters (mL);
c - the concentration of disodium ethylenediamine tetraacetate standard titration solution in moles per liter (mol/L);
M - the molar mass of calcium oxide in grams per mole (g/mol) [M (CaO) = 56.08];
250 --- volume of the volumetric flask, in milliliters (mL);
m --- the quality of the sample, in grams (g);
25 --- Remove the volume of the sample solution in milliliters (mL);
1000 --- conversion factor.
The results of the test are based on the arithmetic mean of the parallel measurement results. The absolute difference between the two independent determinations obtained under repeatability conditions
Value is not greater than 0.2%.
A.5 Determination of magnesium and alkali metals
A.5.1 Reagents and materials
A.5.1.1 Sulfuric acid.
A.5.1.2 Hydrochloric acid solution. 1 4.
A.5.1.3 Ammonia solution. 1 1.
A.5.1.4 oxalic acid solution. 63 g/L.
A.5.1.5 methyl red indicator solution.
A.5.2 Instruments and equipment
Platinum crucible. 100mL.
A.5.3 Analysis steps
Weigh about 0.5g of sample, accurate to 0.0002g. Placed in a 250 mL beaker and 15 mL of hydrochloric acid solution was added slowly to the sample
Solution, heating and boiling 1min, quickly add 40mL oxalic acid solution and stir, add 2 drops of methyl red indicator solution with ammonia solution to adjust the pH
To neutral, heated in a constant temperature water bath for 1h, cooled and transferred to 100mL volumetric flask, add water to the mark, shake. With a slow filter paper
Filter, discard the original filtrate 20mL, with a pipette to remove 50mL filtrate, placed in the 800 ℃ ± 25 ℃ drying to a constant quality of the platinum crucible
, 0.5 mL of sulfuric acid was added, evaporated to dryness on an electric furnace, and then calcined at 800 ° C ± 25 ° C until the mass was constant.
A.5.4 Calculation of results
Magnesium and alkali metal content of the mass fraction w2 according to formula (A.2) calculation.
w2 =
(m1-m2) x 100
m × 50 ×
100% (A.2)
Where.
m1 --- mass of platinum crucible and residue in grams (g);
m2 --- quality of empty platinum crucible, in grams (g);
100 --- volume of the volume of the bottle, in milliliters (mL);
m --- the quality of the sample, in grams (g);
50 --- Remove the volume of the sample solution in milliliters (mL).
The experimental results are based on the arithmetic mean of the parallel measurement results. The absolute difference between the two independent determinations obtained under repeatability conditions
Value is not greater than 0.2%.
A.6 Determination of inorganic arsenic (calculated as As)
Weigh 1.00g ± 0.01g sample, add water to completely wet the sample, add hydrochloric acid solution (1 1) to the sample completely dissolved and excessive 2mL,
Heated to micro-boiling, cooled as the measured sample solution, in accordance with GB 5009.11 or GB 5009.76 in the provisions of the determination.
A.7 Determination of fluorine (F)
Weigh 1.00g ± 0.01g sample, add water to completely wet the sample, add hydrochloric acid solution (1 1) to the sample completely dissolved and excessive
2mL, heated to slightly boiling, cooled and completely transferred to 100mL volumetric flask, diluted with water to the mark, shake. Remove 5.00mL above
The solution was placed in a 50 mL volumetric flask and the following was carried out as specified in GB/T 5009.18.
A.8 Determination of lead (Pb)
Weigh 1.00g ± 0.01g sample, add water to completely wet the sample, add hydrochloric acid solution (1 1) to the sample completely dissolved and excessive
2mL, heated to slightly boiling, cooled and completely transferred to 100mL volumetric flask, diluted with water to the mark, shake. According to GB 5009.12
Prescribed for determination.
A.9 Determination of acid insoluble matter
A.9.1 Methodological summary
The sample was dissolved in a hydrochloric acid solution and filtered, and the insoluble material was dried and weighed.
A.9.2 Reagents and materials
A.9.2.1 Hydrochloric acid solution. 1 1.
A.9.2.2 Silver nitrate solution. 17 g/L.
A.9.3 Instruments and equipment
A.9.3.1 Glass sand crucible. pore size 5μm ~ 15μm.
A.9.3.2 Electric thermostat oven. The temperature can be controlled to 105 ℃ ± 2 ℃.
A.9.4 Analysis steps
Weigh about 5g sample, accurate to 0.0002g, moist with water, dropping hydrochloric acid solution to completely dissolve the sample, heating micro-boiling 2min. take advantage of
Heat the filter before drying at 105 ° C ± 2 ° C to a constant glass sand crucible, washed with hot water to the filtrate without chlorine ions (dissolved in silver nitrate
Liquid test). The glassy silt crucible, together with the insoluble matter, was placed in an electrothermal oven and dried at 105 ° C ± 2 ° C for 1 h to a constant mass.
A.9.5 Calculation of results
The mass fraction of acid insoluble matter w3 is calculated according to formula (A.3)
w3 =
m1-m2
m x 100%
(A.3)
Where.
m1 --- glass sand crucible and insoluble material quality, in grams (g);
m2 --- the quality of glass sand crucible, in grams (g);
m --- sample quality, in grams (g).
The results of the test are based on the arithmetic mean of the parallel measurement results. The absolute difference between the two independent determinations obtained under repeatability conditions
The value is not greater than 0.03%.
A.10 Determination of burning reduction
A.10.1 Instruments and equipment
A.10.1.1 Platinum crucible. 50mL;
A.10.1.2 high temperature furnace. the temperature can be controlled to 1100 ℃ ± 50 ℃.
A.10.2 Analysis steps
Approximately 1 g of sample was weighed at a temperature of 1100 ° C ± 50 ° C prior to firing to a constant mass of platinum crucible, accurate to 0.0002 g,
1100 ℃ ± 50 ℃ burning 2h, cooling 30min, weighing.
A.10.3 Calculation of results
The mass fraction of the burning reduction w4 is calculated according to equation (A.4)
w4 =
m1-m2
m x 100%
(A.4)
Where.
m1 --- the quality of the sample and platinum crucible, in grams (g);
m2 - mass after ignition and platinum crucible in grams (g);
m --- the quality of the sample, in grams (g).
The results of the test are based on the arithmetic mean of the parallel measurement results. The absolute difference between the two independent determinations obtained under repeatability conditions
The value is not greater than 0.5%.
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