SN/T 3056.2-2011 (English Version) PDF

Scope: This part of SN/T 3056 specifies the determination method of the purity of sodium fluosilicate, the determination method of chloride content, the determination method of free acid content, the determination method of iron content, and the determination of moisture content of sodium fluosilicate for fireworks and firecrackers. Methods, methods for measuring pH value, methods for measuring moisture absorption, and methods for measuring fineness. This section is applicable to the determination of the purity of sodium fluorosilicate, the determination of chloride content, the determination of free acid content, the determination of iron content, the determination of moisture content, the determination of pH value, and the determination of moisture absorption rate in sodium fluorosilicate used in fireworks and firecrackers. Determination, determination of fineness.

SN/T 3056.2-2011 Referenced Document

GB/T 3049 Chemical products for industrial use. General method for determination of iron content 1, 10 Phenanthroline spectrophotometric method
GB/T 6003.1 Test sieves—Technical requirements and testing—Part 1:Test sieves of metal wire cloth*， 2022-10-12 Update
GB/T 601 Chemical reagent.Preparations of reference titration solutions*， 2016-10-13 Update
GB/T 6682 Water for analytical laboratory use.Specification and test methods
GB/T 8170 Rules of rounding off for numerical values & expression and judgement of limiting values

2011 SN/T 3056.2-2011 Determination of essential parameters of chemical raw materials for use in fireworks and firecrackers.Part 2:Sodium hexafluorosilicate