GB/T 11213.3-2003
ActiveSodium hydroxide for chemical fiber use--Determination of the calcium content--EDTA complexometric method
化纤用氢氧化钠 钙含量的测定 EDTA络合滴定法
Application Summary AI generated
This standard specifies the EDTA complexometric titration method for determining calcium content in sodium hydroxide used specifically for chemical fiber production. It is applied in quality control laboratories within the chemical fiber industry to ensure that the calcium impurity levels in caustic soda meet the purity requirements necessary for stable viscose or synthetic fiber manufacturing processes.
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