2-Ketoglutaric acid CAS NO.328-50-7

Inspection

Standard

Test Results

Appearance

White crystalline powder

Conforms

Assay

99.0%-101.0%

99.2%

Solubility

Clear

Conforms

Transmittance

≧98.0%

99.0%

Loss on drying

≤0.5%

0.48%

Residue on ignition

≤0.1%

0.03%

sulfate

≤0.02%

<0.02%

chloride

≤0.02%

<0.02%

Ammonium ion

≤0.02%

<0.02%

Calcium ions

≤0.02%

<0.02%

Iron ions

≤10ppm

Conforms

Heavy metals(Pb)

≤10ppm

Conforms

As

≤1ppm

Conforms

Total plate count

≤1000cfu/g

Conforms

Yeast

≤50cfu/g

Conforms

Mold

≤50cfu/g

Conforms

E.coli

Negative

Conforms

Salmonella

Negative

Conforms

Conclusion

1）The result conforms to the enterprise standard as above

2）Laboratory Chemical : For Laboratory Use Only