BS 4130 1984 Edition, July 31, 1984
Specification for Sodium hydroxide (technical grades)
Includes all amendments and changes through Reaffirmation Notice , June 1, 2016
Additional Comments: INCLUDES AMENDMENT 1
Published By:British Standards Institution (BSI)
Specifies two types, as aqueous solutions and in solid form. Requirements for sodium hydroxide content, matter insoluble in water, carbonate, chloride, sulphate, iron, copper and silica contents.