CPC Subgroup
C01B 33/32 Alkali metal silicates ( , C01B33/26 take precedence)
Full Title
Silicon; Compounds thereof ( C01B21/00, C01B23/00 take precedence; persilicates C01B15/14; carbides C01B32/956) > Silicates (persilicates C01B15/14 ) > Alkali metal silicates ( , C01B33/26 take precedence)
1 direct subcode
Child Classifications
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