... .White crystalline powder 4 .99.5% -100 Citric acid monohydrate 77-92-9 Product CharactersWhite Crystalline Powders, Colorless Crystals or GranulesExecutive StandardsBP2009/USP32 ... .5-100.5Water% 7.5-9.07.5-9.0 ≤8.87.5-8.87.5-9.0Light Transmittance%////≥95Calciumppm///≤75200 maxIronppm///≤5 ...