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Specification for sodium silicates
This British Standard specifies requirements for the following materials of technical quality.
The last specification comprises a method of classification for sodium silicate solutions, together with the permitted tolerances on the properties specified when ordering.
Requirements for alkali silica and iron contents and matter insoluble in water of sodium metasilicate pentahydrate for industrial use and additional special requirements for chloride and sulphate contents of material for services use.
Methods of classification for sodium silicate solutions based on silica: alkali ratio and relative density, with optional additional requirements for viscosity.
Test methods not included but reference is made to BS 6092.
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