| ≥1 piece |
|
Product:
|
Alpha lipoic acid
5-(1,2-dithiolan-3-yl)valeric acid
|
|
Grade:
|
USP 35 grade
|
|
Lot :
|
OK 1005A
|
|
Code:
|
180713
|
|
CAS-No:
|
[62-46-4]
|
|
Mol. Formula:
|
C 8 H 14 O 2 S 2
|
|
Mol. Weight:
|
206.3
|
|
Quantity:
|
25Kg /Drum
|
|
Assay
|
99.0~101.0%
|
|
Identification(HPLC)
|
Meets the requirements
|
|
Melting Point
|
60.0~ 62.0℃
|
|
Solubility(1N NaOH)
|
Clear and pale yellow
|
|
Residue on ignition
|
≤0.10%
|
|
Heavy metals
|
≤10ppm
|
|
Chloride
|
≤0.10%
|
|
Loss on drying
|
≤0.2%
|
|
Specific optical rotation
|
-1.0~+1.0°
|
|
Related substances(HPLC)
|
|
|
Single impurity
|
≤0.1%
|
|
6,8-Epitrithiooctanoic acid
|
≤0.1%
|
|
Total impurities
|
≤0.5%
|
|
Polymers(TLC)
|
≤2.0%
|
|
Residual solvents(GC)
|
|
|
Toluene
|
≤30ppm
|
|
Acetic ether
|
≤250ppm
|
|
cyclohexane
|
≤0.02%
|
|
Acetone
|
≤500ppm
|
|
Microbiology
|
|
|
Total aerobic count (CFU/g)
|
≤1000
|
|
Yeasts & Molds (CFU/g)
|
≤100
|
|
Salmonellas.
|
Negative
|
|
E. Coli
|
Negative
|
|
Appearance
|
Yellowish crystalline powder
|