citric acid question
citric acid question
(OP)
Basic question on citric acid. I am a ChemE, but working in ceramics industry, so I am the "chemical expert" in the plant, but I am having a hard time figuring this one out. I have a specification for buying Citric Acid and it reads: "C8H8O7 (on anhydrous basis) 99.5%-100.5%" The question will undoubtedly come to me, how can you have 100.5%? I know I should know the answer, but I don't. Please help me refresh my memory.





RE: citric acid question
Secondo. A mix of anhydrous (MW 192.13) and monohydrate (MW 210.14) may contain not less than 99.5% and not more than 100.5% expressed as anhydrous acid.
I hope this helps.
RE: citric acid question
I never even noticed that there were too many C atoms, but I just checked the spec, and that's exactly what is says. I only started here recently, so I didn't write the specs for any of the chemicals, looks like they could use a once-over.
RE: citric acid question