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GB 15358-2008: Food additive -- Dl-tartaric acid
Status: Obsolete GB 15358: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB 15358-2008 | English | 359 |
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Food additive -- Dl-tartaric acid
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GB 15358-2008
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| GB 15358-1994 | English | 319 |
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Food additive. DL-Tartaric acid
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PDF similar to GB 15358-2008
Basic data | Standard ID | GB 15358-2008 (GB15358-2008) | | Description (Translated English) | Food additive -- Dl-tartaric acid | | Sector / Industry | National Standard | | Classification of Chinese Standard | X42 | | Classification of International Standard | 67.220.20 | | Word Count Estimation | 9,949 | | Date of Issue | 2008-06-25 | | Date of Implementation | 2009-01-01 | | Older Standard (superseded by this standard) | GB 15358-1994 | | Quoted Standard | GB/T 191-2008; GB/T 601-2002; GB/T 602-2002; GB/T 603-2002; GB/T 613-2007; GB/T 617-2006; GB/T 5009.74-2003; GB/T 5009.76-2003; GB/T 6284-2006; GB/T 6678-2003; GB/T 6682-2008; GB/T 9728-2007 | | Adopted Standard | Japanese food additives officially the seventh edition (1999), NEQ | | Regulation (derived from) | Announcement of Newly Approved National Standards No. 12 of 2008 (No. 125 overall) | | 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 Chinese standard specifies the dl- tartaric acid food additive requirements, test methods, inspection rules and signs, packaging, transportation, storage and so on. This standard applies to maleic anhydride and hydrogen peroxide as raw material by oxidation, hydrolysis and prepared food additives dl- tartaric acid production, testing and marketing. The product is mainly used as food acidity regulator. | GB 15358-2008: Food additive -- Dl-tartaric acid---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-dl.dl-Tartaric acid
ICS 67.220.20
X42
National Standards of People's Republic of China
Replacing GB 15358-1994
Posted 2008-06-25
2009-01-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
Chapters 6 and 9.1 of this standard are mandatory, the rest are recommended.
This standard compared with GB 15358-1994, the main changes are as follows.
--- Heavy metal content, arsenic content detection method changes to reference GB/T 5009.74-2003 and GB/T 5009.76-2003
(1994 version 5.5, this version 7.7 and 7.8);
--- All items are factory inspection items, all items are changed to type test project, in which the content of tartaric acid, easily oxidized
It was heated reduction of factory inspection items (see 8.1).
The standard proposed by China Petroleum and Chemical Industry Association.
This standard by the National Standardization Technical Committee branch of organic chemistry (SAC/TC63/SC2) and the National Food Additives Standardization
Committee (SAC/TC11) centralized.
This standard was drafted. Hangzhou Lin'an Jinlong Chemical Co., Ltd.
Participated in the drafting of this standard. Changmao Biochemical Engineering Company Limited.
The main drafters of this standard. Heguo Tian, Dai Liyan, Ma high.
This standard was first released in December 1994.
1 Scope
Production, testing and marketing. The products are mainly used for food acidity regulator.
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 191-2008 Packaging - Pictorial signs (ISO 780.1997, MOD)
Preparation of GB/T 601-2002 Chemical Reagent standard titration solution
GB/T 602-2002 Chemical Reagent preparation impurity standard solution measurement (ISO 6353-1. 1982, NEQ)
GB/T 603-2002 Chemical Reagent Test Methods Preparations with (ISO 6353-1. 1982, NEQ)
GB/T 613-2007 General method for determination of chemical reagents specific rotation ability (specific optical rotation)
GB/T 617-2006 Chemical Reagent melting range determination General Method
GB/T 5009.74-2003 limit test of heavy metals in food additives
Determination of GB/T 5009.76-2003 arsenic in food additives
GB/T 6284-2006 General method for determination of chemical products, moisture loss on drying method
GB/T 6678-2003 General Principles for Sampling Chemical Products
GB/T 6682-2008 analytical laboratory use specifications and test methods (ISO 3696. 1987, MOD)
GB/T 9728-2007 Determination of sulfate chemical reagents common method (ISO 6353-1. 1982, NEQ)
3 chemical name, molecular formula, molecular mass and structural formula
Chemical Name. 2,3-dihydroxybutanedioic acid
Molecular formula. C4H6O6 · like H2O (crystalline product like = 1, dry goods like = 0)
Structure.
CH
COOH
OH
CH
COOH
OH
· Like H2O
Molecular Weight. 168.11 crystalline products; dry goods 150.09 (according to 2007 international relative atomic mass)
4 Classification and designation
(Dry goods).
5 Traits
The crystalline product is colorless crystal or white crystalline powder; anhydrous product as a white powder or granules.
6 Requirements
Table 1 Technical Requirements
project
index
Anhydrous crystalline product products
Melting range/℃ 200 ~ 206
Sulfate (SO4 dollars), /% ≤ 0.04
Heavy metals (Pb), /% ≤ 0.001
Arsenic (As), /% ≤ 0.0002
Yi oxide test by testing
Loss on drying, /% ≤ 11.5 0.5
Residue on ignition, /% ≤ 0.10
7 Test methods
7.1 Warning
Some test procedures prescribed test method can lead to dangerous situations. The operator shall take appropriate safety and health practices.
7.2 General Provisions
Unless otherwise indicated in the analysis using only recognized as analytical reagents and GB/T 6682-1992 specified in the third grade water.
The test method used in the standard titration solution, impurities measured by standard solution, preparations and products, not specified in other requirements, according
GB/T 601-2002, regulations preparation GB/T 602-2002 and GB/T 603-2002 in.
7.3 Identification Test
7.3.1 Optical Test
Weigh 1.0g laboratory samples, accurate to 0.01g, add water to dissolve 10mL, according to the provisions of GB/T 613-2007 was measured to be
No optical activity.
7.3.2 pH test
Weigh 1.0g laboratory samples, accurate to 0.01g, add water to dissolve 10mL, blue litmus paper test, it should be red.
7.3.3 Test reactivity Tartrate
7.3.3.1 Reagents
7.3.3.1.1 nitric acid;
7.3.3.1.2 sulfuric acid;
7.3.3.1.3 sodium hydroxide solution. 40g/L;
7.3.3.1.4 silver nitrate solution. 20g/L;
7.3.3.1.5 ammonia solution. 2 → 5;
7.3.3.1.6 acetic acid solution. 1 → 4;
7.3.3.1.7 ferrous sulfate solution. 80g/L;
7.3.3.1.8 hydrogen peroxide solution. 1 → 10;
7.3.3.1.9 resorcinol solution. 20g/L;
7.3.3.1.10 potassium bromide solution. 100g/L.
7.3.3.2 Preparation of sample solution
Weigh 5.0g laboratory samples, accurate to 0.01g, add a little water to dissolve, then sodium hydroxide solution to neutral, with water to
100mL, the sample solution A.
7.3.3.3 analysis step
7.3.3.3.1 add silver nitrate solution in the sample solution A, a white precipitate. Separating the precipitate, add nitric acid when its part of the precipitate
That is dissolved. Add ammonia solution and heated in another part of the precipitate was dissolved slowly and should generate silver mirror.
7.3.3.3.2 Two drops of acetic acid, one drop of ferrous sulfate solution, (2-3) drops of hydrogen peroxide solution and an excess of sodium hydroxide solution in the sample
A solution, that is significant purple ~ purple.
7.3.3.3.3 previously added in 2 to 3 drops of a solution of resorcinol and (2-3) drops of the potassium bromide solution was added 5mL of sulfuric acid 2 to 3 drops of sample
When solution A, heated in a water bath (5 ~ 10) min, the solution should be obvious dark blue. After cooling, the excess of water injection should be red color.
7.4.1 Method summary
Phenolphthalein as indicator, titrated with sodium hydroxide standard sample (first dried) solution, according to standard titration with sodium hydroxide solution
7.4.2 Reagents
7.4.2.1 standard Huai sodium hydroxide titration solution. Ba (NaOH) = 0.1mol/L;
7.4.2.2 phenolphthalein indicator solution. 10g/L.
7.4.3 crystalline product sample
Weigh about 5g laboratory samples, accurate to 0.0002g, placed in a constant mass weighing bottle with lid at (105 ± 2) ℃ in the oven
Dried to a constant mass of dried B.
7.4.4 Analysis of step
7.4.4.1 For crystalline product, called the fetch about 2g7.4.3 dried B, accurate to 0.0002g; for dry goods, Weigh about 2g
7.10.2 The dried product C, accurate to 0.0002g. Dissolved in water, move to 250mL volumetric flask, dilute to the mark, Pipette (25 ±
0.02) mL in 250mL conical flask, add 2 drops of phenolphthalein indicator solution, titration with sodium hydroxide standard solution to reddish, not faded holding 30s
Color is the end.
7.4.4.2 measured at the same time, according to the same procedure and the determination of the sample without using the same amount of reagent blank test solution.
7.4.5 Calculation Results
1 =
[(Vp - V0)/1000] Ba M
100 (1)
Where.
Vp --- sample consumption of sodium hydroxide standard titration solution (7.4.2.1) the value of the volume, in milliliters (mL);
V0 --- consumption of sodium hydroxide standard titration blank test solution (7.4.2.1) the value of the volume, in milliliters (mL);
Accurate Ba --- sodium hydroxide standard titration solution concentration value in units of moles per liter (mol/L);
Calculation result to two decimal places.
Take two parallel determination results of the arithmetic average of the measurement results, the results of two parallel determination of the absolute difference is not more than 0.2%.
7.5 Determination of melting point range
Performed according to GB/T 617-2006 4.1 requirements. 7.10.2 sample is dried C, heat transfer liquid silicone oil.
The difference between two parallel determination results, initial and final melting point melting point of not more than 0.4 ℃, whichever is the arithmetic average of the measurement results.
7.6 Sulfate (SO4 meter) measurement
Conducted in accordance with GB/T 9728-2007 of. Weigh 0.25g of sample processing laboratory samples, accurate to 0.001g, into
50mL colorimetric tube, add approximately 20mL water to dissolve. Amount of (1 ± 0.02) mL (containing sulfate 0.1mg) sulphate (SO4) standard solution prepared
Preparation limits.
7.7 Heavy metal (P Chou meter) Determination of
Performed according to GB/T 5009.74-2003 requirements. Sample processing using the "dry digestion." Amount of (2 ± 0.02) mL (lead
20μg) Preparation of standard solution of lead (Pb) lead limit standards.
7.8 Determination of Arsenic (A Ju) content of
Conducted in accordance with GB/T 5009.76-2003 second method Gutzeit method. Weigh 1.0g sample processing of laboratory samples, precise
To 0.01g, add water to dissolve 10mL. Amount of (2 ± 0.02) mL (arsenic 2.0μg) arsenic (As) standard solution preparation limits.
7.9 Determination of oxides Yi
7.9.1 Method summary
Under acidic conditions, the reaction solution is easily oxidized substance in the sample with potassium permanganate, potassium permanganate solution faded so purple, visually count
When the method was measured.
7.9.2 Reagents
7.9.2.1 sulfuric acid solution. 1 → 20;
7.9.2.2 potassium permanganate standard titration solution. Ba 15KMnO () 4 is about 0.1mol/L.
7.9.3 Analysis of step
Weigh 1.0g laboratory samples, accurate to 0.01g, add water to dissolve 25mL and 25mL sulfuric acid solution, while maintaining the (20 ± 1) ℃ Article
Under parts, plus standard potassium permanganate titration solution 4.0mL, purple test solution was allowed to stand under the condition should disappear within 3min.
Determination of loss on drying of 7.10
Conducted in accordance with GB/T 6284-2006 of. Weigh the amount of laboratory sample crystallized product was 1g, accurate to 0.0002g; dry goods
Weigh the amount of laboratory sample is 6g, accurate to 0.0002g.
Take two parallel determination results of the arithmetic average of the measurement results, the results of two parallel determination of the absolute difference is not more than 0.05%.
Determination of residue on ignition 7.11 Content
7.11.1 Reagent
sulfuric acid.
7.11.2 analysis step
Weigh (2 ~ 3) g laboratory samples, accurate to 0.0001g, placed at (500 ± 25) ℃ to constant mass burning of 25mL porcelain crucible
Was added a few drops of sulfuric acid samples were completely soaked and heated with warm fire, until the sample is completely carbonized, cooled to room temperature. Add approximately 1mL of sulfuric acid residues soaked
Slag, using the above method is heated to sulfuric acid vapor Yat do. At (500 ± 25) ℃ burning 3h. After cooling in a desiccator to room temperature silica gel was weighed,
Accurate to 0.0001g. In this case the mass fraction of residues should be 0.10% or less, or such, should ignition residue to constant mass.
7.11.3 Calculation Results
3 mass fraction of residue on ignition, expressed in%, according to equation (2).
3 =
(2)
Where.
Take two parallel determination results of the arithmetic average of the measurement results, the results of two parallel determination of the absolute difference is not more than 0.005%.
8 Inspection Rules
8.1 product testing into the factory inspection and type testing.
Tested.
8.1.2 Table 1, all the items are type inspection items. Under normal circumstances, at least once a month type test. The following
When one case, the type of inspection should be carried out.
a) identification of new products into production time;
b) raw materials, technology, equipment major changes that may affect product performance;
c) shut down more than three months to resume production;
d) factory inspection results are quite different and the last type inspection;
Provisions e) contract.
Hope can be adjusted quantities.
Bagging, the upper, middle and lower three from each of a number of laboratory samples, each batch of samples should be less than 0.5kg, the samples taken crush, carefully mix, take
Its part is divided into two parts, each about (50 ~ 100) g, in sealed containers, and label indicating the production plant name, product name, batch number,
Sampling and sampling date's name. Send an inspection department, another three months to save for future reference.
Manufactured products are in line with the requirements of this standard.
8.5 If there is an indicator test results do not meet the requirements of this standard should be re-twice the amount of the packaging unit from sampling retest,
Retest results even if only one indicator does not comply with this standard, the entire batch of products to be ineligible.
9 signs, packaging, transportation and storage
9.1 mark
Address, trademark, the word "food additive", this standard number, health permits, production licenses and production batch number or production date, net content
And according to GB/T 191-2008 stipulated "afraid of the rain" signs.
Said net content, trademarks, health permits, production license number, lot number and production date, shelf life and number of the standard and quality of products in line with
The standard of proof.
9.2 Packaging
It can also be packaged according to user requirements specifications.
9.3 Transport
Odor and other possible contaminated substances mixed, mixed operation.
9.4 Storage
The substance can be mixed silage. Can not open dumps can not be mixed with toxic and hazardous materials.
9.5 Shelf Life
month. Late re-test, test results comply with the requirements of this product can still be used.
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