We supply citric acid monohydrate & anhydrous, pls feel free to contact me. STANDARD SPECIFICATION CITRIC ACID MONOHYDRATE Item unit BP93 BP98 USP23/24 E330 RZBC -------------------------------------------------------------------------------------------------------------------------------------------- Identification pass pass pass pass pass -------------------------------------------------------------------------------------------------------------------------------------------- Clarity&color 20% water 20% water 50%water solution Of solution solution clarity solution clarity clariry>99.0%(450nm) ---------------------------------------------------------------------------------------------------------------------------------------------------- content % 99.5-101.0 99.5-101.0 99.5-100.5 ?99.5 99.5-101.0 --------------------------------------------------------------------------------------------------------------------------------------------------- moisture % 7.5-9.0 7.5-9.0 ?8.8 ?8.8 7.5-8.8 ---------------------------------------------------------------------------------------------------------------------------------------------------- barium pass pass ----------------------------------------------------------------------------------------------------------------------------------------------------- calcium ppm ?200 ?100 ----------------------------------------------------------------------------------------------------------------------------------------------------- iron ppm ?50 ?5 ------------------------------------------------------------------------------------------------------------------------------------------------------ arsenic ppm ?3 ?1 ?0.5 ------------------------------------------------------------------------------------------------------------------------------------------------------ heavy metals ppm ?10 ?10 ?10 ?5 ?5 ------------------------------------------------------------------------------------------------------------------------------------------------------ oxalates ppm ?350 ?350 pass ?100 ?100 ------------------------------------------------------------------------------------------------------------------------------------------------------ chlorides ppm ?50 ?10 ------------------------------------------------------------------------------------------------------------------------------------------------------ sulphate ppm ?150 ?150 pass ?150 ----------------------------------------------------------------------------------------------------------------------------------------------------- readily carbonisable substancepas