• Vitamin K2 Powder

Vitamin K2 Powder


Vitamin K2 is also called menaquinone, K stands for Koagulation. Vitamin K2 powder is insoluble in water, soluble in organic solvents and vegetable oil. Its CAS number is 11032-49-8 and the molecular formula is C31H40O2.

Vitamin K2 has several different subtypes, the most important ones are short-chain MK-4 and long-chain MK-7. M stands for menaquinone, the K stands for vitamin K, the number represents the number of isoprenoid side chain residues.

Vitamin K2 is mainly used in supplements, and it can be also used as fortifying agent in food to increase the nutritional value.



Name Specification Appearance
Vitamin K2 Vitamin K2 MK4 1.3%, 98% 1.3% is yellowish to yellow powder; 98% is yellow powder
Vitamin K2 MK7 0.2%, 1.3% 0.2% is light yellow powder; 1.3% is yellow oil; 1.5% is light yellow powder
Item                                        Specifications                              Results
Purity (HPLC,Menaquinone-7) ≥1.3%(>13000ug/g) 1.32%
Pharm.excipient(Carbohydrate) ≥90.0% 90.40%
Identification Light Yellow Powder Light Yellow Powder
pH 5.5~8.0 7.8
Loss on drying ≤10.0% 8.50%
Residue on ignition ≤0.1% <0.1%
Reducing sugar ≤0.2% <0.2%
Starch Negative Negative
Fatty acid Negative Negative
Heavy metals ≤10ppm <10ppm
Arsenic ≤2ppm Complies
Pesticides residue Negative Negative
Total aerobic count (CFU/g) ≤1000 Complies
Yeasts & Molds (CFU/g) ≤100 Complies
Salmonella SP. Negative Negative
E. Coli Negative Negative
Storage:  Store at 0~8℃. Protect from moisture.