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  • 1. GB 5461-2000 PrefaceThe standard is the revision of GB 5461-1992 Edible Salt.This standard is not equivalent to POCT 13830-1984 Edible Salt. Calculation ofwhiteness and chemical index according to wet base percentage is added in thestandard and sanitation index limitation is stipulated aiming at production rawmaterials, production process and product quality conditions of China’s edible salt.The standard is revised to delete the grade III products of common salt, refinedwashed salt and solar salt and regulate the potassium iodate, particle size, whitenessand partialThis national standard will replace GB 5461-1992 from the implementation date ofthis standard.This national standard was proposed by the State Bureau of Light Industry.This national standard is under the jurisdiction of National Sea-lake SaltStandardization Center which is also responsible for interpretation of this standard.Main drafting units of this standard: National Sea-lake Salt Standardization Centerand China Well and Rock Salt Standardization Center.Main drafters of this standard: Liu Zhida, Chen Sujuan, Zhang Nengjun, Wang Zhibinand Fu Shuying.This standard was firstly issued in October 1985 and revised for the first time in June1992 and revised for the second time in December 1999.
  • 2. National Standard of the People’s Republic of China GB 5461-2000 Edible Salt Replace GB 5461-19921. ScopeThis national standard specifies the technical requirements, test method, inspection rulesand packing, marks, storage and transportation of edible salt.This national standard is applicable to the edible refined salt, refined washed salt andsolar salt.2. Normative StandardsThe following standards contain provisions which, through reference in this text,constitute provisions of this standard. At time of publication, the editions indicated areall valid. All standards are subject to revision, and parties to agreements based on thisstandard are encouraged to investigate the possibility of applying the most recenteditions of the standards indicated below.GB/T 601-1988 Chemical Reagent-Preparation of Standard Solution for Titrimetric Analysis (Volumetric Analysis)GB/T 602-1988 Chemical Reagent–Preparations of Standard Solutions for ImpurityGB/T 603-1988 Chemical Reagent - Preparations of Reagent Solutions for Use in TestMethodsGB/T6682-1992 Water for Analytical Laboratory Use - Specification and TestMethodsGB 7718-1994 General Standard for the Labeling of FoodsGB/T 8618-1988 Sampling Methods of the Main Products in the Salt IndustryGB/T 13025.1-1991 General Test method in Salt Industry-Determination of grain size
  • 3. GB/T 13025.2-1991 General Test method in Salt Industry- Determination ofWhitenessGB/T 13025.3-1991 General Test method in Salt Industry-Determination of MoistureGB/T 13025.4-1991 General Test method in Salt Industry- Determination of InsolubleMatterGB/T 13025.5-1991 General Test method in Salt Industry-Determination of ChlorideIonGB/T 13025.6-1991 General Test method in Salt Industry-Determination of CalciumGB 5461-2000and Magnesium IonsGB/T 13025.7-1999 General Test method in Salt Industry- Determination of IodideIonGB/T 13025.8- 1991 General Test method in Salt Industry- Determination of SulfateIonGB/T 13025.9- 1991 General Test method in Salt Industry-Determination of Lead Ion(Photometry)GB/T 13025.10-1991 General Test method in Salt Industry- Determination ofPotassium FerrocyanideGB/T 13025.11-1994 General Test method in Salt Industry- Determination of FluorineGB/T 13025.12- General Test method in Salt Industry- Determination of Barium IonGB/T 13025.13-1994 General Test method in Salt Industry-Determination of ArsenicIon3. Product ClassificationEdible salt is crystal sodium chloride.Edible salt is classified to refined salt, refined washed salt and solar salt according tothe production and processing methods.Edible salt is classified to Superior Grade, Grade I and Grade II according to theclassification.
  • 4. Molecular formula: NaCl Approved by State Bureau of Quality and Technical Supervisionon April 20, 2000. Date of implementation: October 1, 2000
  • 5. GB 5461-2000 Molecular weight:58. 44(according to the international atomic weight of 1997). 4. Technical Requirements 4.1 Sensory index: white and saline taste and free from extraneous odour and foreign material obviously irrelevant to salt. 4.2 The physical and chemical indexes shall meet the regulations stipulated in table 1. Table 1 Indexes Refined salt Refined washed salt Solar salt Superio Grade I Grade Grade I Grade II Grade I Grade II r grade IIPhysical Whiteness, degree 80 75 67 55 55 45indexes ≥ Particle size, % 0.15-0.85mm 0.5-2.5mm 0.5-2.5mm 1.0-3.5mm ≥ 85 80 75 80 85 70Chemical Sodium chloride 99.10 98.50 97.00 97.00 95.50 93.20 91.00 indexes ≥ (%) Moisture 0.30 0.50 0.80 2.10 3.20 5.10 6.40 ≤ Insoluble matter 0.05 0.10 0.20 0.10 0.20 0.10 0.20 ≤ Water-solubility - - 2.00 0.80 1.10 1.60 2.40 impurity ≤Sanitation Lead (calculated 1.0
  • 6. indexes as Pb) ≤ (mg/kg) Arsenic(calculated 0.5 as As) ≤ Fluorine 5.0 (calculated as F) ≤ Barium 15.0 (calculated as Ba)1) ≤ Potassium Iodine (calculated 35±15(20~50) iodate as I)2) (mg/kg)Antitackiness Potassium 10.0 agent ferrocyanide (calculated as [Fe(CN)6]4-)≤ (mg/kg)1) The determination is limited only to the edible salt made of the natural brine containing barium.2) As for the edible salt not iodinated for the residents in the regions with high level iodide and the people for whom theiodized salt are not suitable, the iodine content shall be smaller than 5 mg/kg and the package shall be provided with thecorresponding marking. Other indexes are unchanged. 5. Test Method Reagents and water involved in the method, except otherwise specified, refer to the analytical reagents and the three-level water specified in GB/T 6682. The standard solution and impurity standard solution and preparation and products, except otherwise specified, shall be prepared according to the regulations stipulated in the national standards of GB/T 601,GB/T 602 and GB/T 603. 5.1 Determination of particle size Implement it according to the regulations stipulated in the national standard of GB/T 13025.1. 5.2 Determination of whiteness
  • 7. Implement it according to the regulations stipulated in the national standard of GB/T13025.2.5.3 Determination of moistureImplement it according to the regulations stipulated in the national standard of GB/T13025.3.5.4 Determination of insoluble matterImplement it according to the regulations stipulated in the national standard of GB/TGB 5461-2000 13025.4.5.5 Determination of the content of chloride ionImplement it according to the regulations stipulated in the national standard of GB/T13025.5.5.6 Determination of the content of calcium ionImplement it according to the regulations stipulated in the national standard of GB/T13025.6.5.7 Determination of the content of magnesium ionImplement it according to the regulations stipulated in the national standard of GB/T13025.6.5.8 Determination of the content of sulfate ionImplement it according to the regulations stipulated in the national standard of GB/T13025.8.5.9 Determination of the content of iodide ionImplement it according to the regulations stipulated in the national standard of GB/T13025.7.5.10 Determination of the limited amount of lead ionImplement it according to the regulations stipulated in the national standard of GB/T13025.9.5.11 Determination of the limited amount of arsenic ion
  • 8. Implement it according to the regulations stipulated in the national standard of GB/T 13025.13. 5.12 Determination of the limited amount of barium ion Implement it according to the regulations stipulated in the national standard of GB/T 13025.12. 5.13 Determination of the limited amount of fluorine Implement it according to the regulations stipulated in the national standard of GB/T 13025.11. 5.14 Determination of the limited amount of potassium ferrocyanide Implement it according to the regulations stipulated in the national standard of GB/T 13025.10. 5.15 Calculation of content of sodium chloride and water solubility impurity and check on the inspection result. GB 5461-2000 The percentage composition of the single ions contained in the edible salt samples shall be obtained from various inspection results above and then the compound composition shall be calculated according to the orders stipulated in table 2. Sum of calcium sulphate, magnesium sulfate, sodium sulfate, calcium chloride and magnesium chloride calculated is the content of water solubility impurity and other calculation of chloride ions is the content of sodium chloride. Table 2Negative ionpositive Calcium ion (Ca2+) Magnesium(Mg2+) Sodium ion(Na+) ion Sulphate (SO42-) (1) Calcium (2) Magnesium (3) Sodium sulfate sulphate sulfate Chloride ion(Cl-) (4) Calcium (5) Magnesium (6) Sodium chloride chloride chloride If it is calculated according to the sequence number, some kind of compound can not be formed because of inexistence of negative ion or positive ion, so it shall be calculated through supplementing data successively according to the subsequent sequence number in turn. The calculation result shall be rounded to three decimal
  • 9. places and take the two decimal places.It is regarded that the analysis data is established, when the sum of the total compoundpercentage plus the insoluble matter and moisture (loss of weight through baking plusthe residual crystal water or the measured value after ignition at 600℃) is between99.50% and 100.40%.The residual crystal water of edible salt after drying at 140 ℃ shall be calculatedaccording to that 1 calcium sulphate contains 1/2 crystal water and 1 magnesiumsulfate contains 1 crystal water and 1 magnesium chloride contains 2 crystal water and1 calcium chloride contains 2 crystal water. The residual crystal water of edible saltafter drying at 110 ℃ shall be calculated according to that 1 calcium sulphate contains1/2 crystal water and 1 magnesium sulfate contains 2 crystal water and 1 magnesiumchloride contains 4 crystal water and 1 calcium chloride contains 2 crystal water.6. Inspection Rules6.1 BatchA batch refers to the products of the same grade and delivered at the same timemanufactured by the same process method.6.2 The edible salt products shall be subjected to inspection batch by batch accordingto the regulations stipulated in the standard by the inspection department ofmanufacturing plant (site) or the sales department and after they pass the inspectionGB 5461-2000 the certification of fitness shall beattached on the internal (external) package and then the products are allowed to bedelivered.6.3 Sampling method and quantityImplement it according to the regulations stipulated in the national standard of GB/T8618.6.4 The quality of edible salt product shall be subjected to the quality inspected duringdelivery and in case of any dispute concerning the product quality between thesupplier and the demander, it shall deliver the product to the arbitration organizationjointly entrusted by the supplier and the demander and the inspection and judgmentshall be performed according to the regulations stipulated in the standard.6.5 Mass deviation between the net weight of the edible salt product packaged andthat marked shall meet the requirements of Regulation on Metrological Supervision ofQuantitatively Packed Commodities issued by China.
  • 10. 6.6 In case of failure of any one index (or any two indexes of particle size, whitenessand water solubility impurity) in the inspection result to meet the requirements of theregulations stipulated in the standard, test for the unqualified items of the reservedsample of the same batch shall be done, and if it fails to meet the regulation of thelowest level of the category of product after the reinspection it shall be judged that thebatch of product is unqualified.7. Packing, Marks, Storage and Transportation7.1 Carton box and woven bag with inside lining polyethylene film must be used forthe large packing of edible salt, with the weight of each piece of 25 kg or 50 kg. Thepacking shall be provided with certification or qualification label and be marked withname and address of manufacturer, product name and quantity and batch number andthe name (code) of inspector.7.2 The polyethylene plastic bag, carton box and plastic box(bottle)( nontoxic) may beused for the small packing of the edible salt, with the weight of each piece of 1000g ,500g ,250g or below 250g, and the small packing must be marked with the mainelements stipulated in GB 7718 and be pasted with the iodized salt anti-fake label.7.3 The means of transport of edible salt must be clean and dry and the appliancesduring transportation must be bundled up firmly to guarantee that they are excellentwithout damage, and it is forbidden to load the goods, possibly leading to thepollution to the salt quality, with the edible salt. In case of any damage or qualityreduction caused by the transportation, the relevant parties shall be responsible for it.7.4 The edible salt shall be kept well during storage. The storage warehouse shall bewell-ventilated and be free from rainwater and damp and the piled edible salt shall beshielded and be provided with the clapboard and it is forbidden to stockpile the goods,GB 5461-2000 which may possibly lead to thepollution to the salt quality, together with the edible salt.