Lactose is a disaccharide sugar composed of galactose and glucose that is found in milk. Lactose makes up around 2–8% of milk (by weight), although the amount varies among species and individuals, and milk with a reduced amount of lactose also exists. It is extracted from sweet or sour whey. The name comes from lac (gen. lactis), the Latin word for milk, plus the -ose ending used to name sugars.It has a formula of C12H22O11 and the hydrate formula C12H22O11·H2O, making it an isomer of sucrose.
Item
Standard
Test Results
Identification
A.H-NMR:Comply with the structure
Complies
B.LC-MS:Comply with the structure
Complies
C.The IR spectrum of sample should be identical with that of reference standard;
Complies
D.HPLC-ESI-MS
Complies
The retention time of the major peak in the chromatogram of the Assay preparation corresponds to that in the chromatogram of the Standard preparation, as obtained in the Assay.
Heavy metals
≤10 ppm
<10ppm
Water
≤1.0%
0.10%
Sulphated ash
≤0.5%, determined on 1.0 g.
0.01%
Related substances
Unspecified impurities: for each impurity
≤0.10%
<0.10%
Total Impurity
≤0.5%
0.18%
Purity
≥99.0%
99.70%
Assay
99.0%~101.0% (anhydrous substance).
99.80%
Storage
Preserve in well-closed, light-resistant and airtight containers.
Complies
Packaging & Shipping
Company Information
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