This standard specifies the technical requirements, test methods, inspection rules, packaging, marking, transportation and storage of industrial salt. This standard is applicable to industrial sun-dried industrial salt and refined industrial salt. GB/T 5462-2003 Industrial Salt GB/T5462-2003 Standard Download Decompression Password: www.bzxz.net

This standard makes the following changes to GRG2-1SS2 industrial salt: the mandatory standard is changed to a recommended standard; the technical indicators of industrial salt are appropriately improved: the first grade is cancelled; the refined industrial benefit index is clarified; the commercial impurity index is cancelled, and the sulfate and calcium bond index are added. This standard is issued by the China Light Industry Federation. This standard is under the jurisdiction of the National Ocean Salt Standardization Center and the National Mineral Salt Standardization Center: the drafting units of this standard are: the National Ocean Salt Standardization Center and the National Mineral Salt Standardization Center. The main drafters of this standard are: Xiu Yunxian, Liu Zhida, Zuo Yicheng, Fei Pin. GR/T5462-2003
1Fan Guo
This standard is regulated by? The technical requirements, test methods, inspection rules and regulations, markings, operation and storage of the above-mentioned documents are applicable to industrial products, such as industrial products, and industrial products. 2 Normative reference documents
GB/T5462-2003
The following documents are referenced by the following standards and become the references of this standard. For any dated application document, all subsequent amendments (excluding errors) will not be applicable to this standard. However, the parties who have reached an agreement based on this standard shall study whether the latest version of the previous document can be used. For undated application documents, the latest version can only be applied to this standard. GB/T5632:1902 Specification and test methods for water for laboratory use (neg18) GB/T5696:1987) GB/T6182001 Sampling methods for essential products in salt making industry GB/T13035.3 Test methods for salt making industry - Determination of water content GB/T 13025.4 Test methods for salt making industry - Determination of water content of substances GB/T 13025.5 General test methods for salt making industry GB/T 18023.6 General test methods for salt making industry GB/T 1302-.8
General test method for the preparation of three industries
3 Determination of product concentrations of sodium ions
Determination of calcium and iron concentrations
Determination of sulfate ions
Test of the product or a combination of multiple products, other uses are divided into industrial salt, industrial salt, molecular formula: NaCl
Average molecular weight: 58.44 (1507 atomic weight ) 4 Technical requirements
4.1 Appearance
The color is yellowish or slightly yellow, and the color is related to the product. The appearance is: 4.2 Chemical indicators
The chemical index of industrial salt should comply with the provisions of the table!
Hydrogenated salt
Moisture content (%)
Water-free)
Order 75%
Basic risk factor (%)
Daily industrial salt
99, 10
Manufacturing salt
GB/T5462—2003
5 Sample
According to GB/T518—20KI.
6 Test method
When the reagents and techniques used in the following methods are not specified, they refer to the analytical reagents and the third-grade water specified in GB/T 2-19%2.
6.1 Determination of appearance
6. 2 The water content should be determined according to GB13025.3. The water content measured by the lamp drying method should be added with the residual crystal water in each compound. The compound should be determined according to 6,7 adsorption method. The weak water content is calculated as one-half of the product water of calcium sulfide, one-half of the product water of magnesium sulfate, two-half of the product water of sodium sulfide, and one-half of the product water of chlorinated ether. 6.3 The residual water insoluble matter should be determined according to GB/T 3025.1. 6.4 The determination of oxygen ions should be determined according to GB/F13025.5. 6.5 The determination of calcium and magnesium ions should be determined according to GB/T 13022,6 Regulations. bzxZ.net
6.6 Determination of rutile acid
According to GH/T13025,K standard
6.7 Pre-calculation and inspection of sodium ion index The above test results are combined with the individual ion contents listed in the order of the negative ions listed in 2, and the residual ions are used to calculate the total content.
Assign serial number
Positive and negative ions
Creating high ions (g)|| tt||Acid (Sr-)
Hungry ion [Mg\
High-[C1-
Separation FN
The compounds calculated by the above method and the water content are added. When the sum is 99.6%~70.1%, the test result is valid:
Testing rules
Products produced by the same production process and the same source are considered as one. All indicators in the test results are determined to be in accordance with the requirements of the corresponding level of this standard, otherwise they should be downgraded: If any indicator does not meet the requirements of the lowest level of the standard, the spare list of the finished product should be taken and re-determined as non-conforming items; If the test result still does not meet the requirements of the lower level of this standard, the product is judged to be unqualified.
The quality inspection department of the production unit of an industrial enterprise shall entrust a qualified quality inspection agency to conduct inspections. When the product leaves the factory (site), it shall be accompanied by a certificate of conformity, indicating the product name, specification, production unit, production period, grade and standard number. 2
Packaging and marking. When transporting and storing
GB/T 5462—2063
Industrial salt can be packed or glued when leaving the site. The product with low packaging shall be marked with the name of the manufacturer, manufacturer, manufacturer, production unit and this standard number. There shall be no contaminants during transportation, and it shall not be packed together with goods that may cause product contamination. The product shall be stored in a place away from dust and other debris and protected from rain.
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