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GB/T 12457-2008: Determination of sodium chloride in foods
Status: Obsolete GB/T 12457: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 12457-2008 | English | 439 |
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Determination of sodium chloride in foods
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GB/T 12457-2008
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| GB/T 12457-1990 | English | 359 |
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Method for determination of sodium chloride in foods
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GB/T 12457-1990
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PDF similar to GB/T 12457-2008
Basic data | Standard ID | GB/T 12457-2008 (GB/T12457-2008) | | Description (Translated English) | Determination of sodium chloride in foods | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | X04 | | Classification of International Standard | 67.050 | | Word Count Estimation | 11,142 | | Date of Issue | 2008-06-25 | | Date of Implementation | 2009-01-01 | | Older Standard (superseded by this standard) | GB/T 12457-1990 | | Quoted Standard | GB/T 6682 | | Adopted Standard | ISO 1841-1981, NEQ; ISO 3634-1979, NEQ | | Regulation (derived from)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 indirect precipitation titration, determination of sodium chloride in food analysis steps potentiometric titration, and provides direct precipitation titration of sodium chloride in food analysis steps. This standard indirect and direct precipitation titration precipitation titration apply to meat products, aquatic products, vegetable products, preserved foods, seasoning, determination of starch products in sodium chloride. Does not apply to the determination of sodium chloride in food deep color, potentiometric titration method for the determination of these types of foods and deep colors sodium chloride in foods. | GB/T 12457-2008: Determination of sodium chloride in foods---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.
Determination of sodium chloride in foods
ICS 67.050
X04
National Standards of People's Republic of China
Replacing GB/T 12457-1990
Determination of sodium chloride in foods
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
This standard and ISO 1841. 1981 "Meat and meat products Determination of sodium chloride" and ISO 3634. 1979 test, "vegetable products sodium chloride
Set "of non-equivalent; direct precipitation titration Appendix A and ISO 1841. 1981" Determination "meat and meat products in sodium chloride
The degree of consistency of the second law of non-equivalent.
This standard replaces GB/T 12457-1990 "Determination of sodium chloride in foods."
This standard and GB/T 12457-1990 compared to the main changes are as follows.
--- Standard name was changed to. Determination of sodium chloride in food;
--- Standard "principles" are the following. Method summary;
--- According to the provisions of GB/T 1.1-2000 and GB/T 20001.4-2001 and modify the format of the text.
Appendix A of this standard is an informative annex.
This standard by the National Standardization Technical Committee of Food Industry and focal points.
This standard was drafted. Chinese Food Fermentation Industry Research Institute.
The main drafters of this standard. Xu Qing canal, Gongling Di.
This standard replaces the standards previously issued as follows.
--- GB/T 12457-1990.
Determination of sodium chloride in foods
1 Scope
3.2.9.1 chloride precipitation. Weigh 0.10g ~ 0.15g reference reagent sodium chloride (or by 500 ℃ ~ 600 ℃ ignition to constant weight analysis
Pure sodium chloride), accurate to 0.0002g, in 100mL beaker, dissolved in water and transferred to 100mL volumetric flask. Nitric acid was added 5mL
Solution (3.2.4), with vigorous shaking while adding 30.00mL (Vp 1) 0.1mol/L standard silver nitrate titration solution (3.2.6), diluted with water to
Mark and shake. Placed in a dark place 5min, filtered through a fast filter paper, discard the first filtrate 10mL.
3.2.9.2 excess silver nitrate titration. take the above filtrate 50.00mL in 250mL conical flask, 2mL saturated ammonium ferric sulfate solution
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