Specifications

Name: Alpha lipoic acid
Character: Yellow or yellowish crystalline powder,
Quality: USP34

I     tem	Specifications	Results
Appearance	Yellow crystalline powder	Conforms
Melting Point	60~62°C	61.9°C
Residue on Ignition	0.10% Max	0.03%
Heavy Metals	10ppm Max	<10ppm
Chloride	0.10% Max	0.07%
Loss on drying	0.20% Max	0.04%
Assay	99.0~101.0% Max	99.52%
Specific optical rotation	-1°~ +1°	Conforms
Toluene	30ppm Max	<20ppm
Ethyl Acetate	25ppm Max	Undetected
Total Aerobic Counts	1000cfu/g Max	<100cfu/g
Mould & Yeast	100cfu/g Max	10cfu/g
Conclusion	Conforms to the requirements.