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Vitamin D3

Vitamin D3, also known as cholecalciferol, is a fat-soluble vitamin synthesized naturally in the skin of humans and animals upon exposure to ultraviolet B (UVB) radiation. It acts as a prohormone that is essential for maintaining optimal calcium and phosphorus levels, supporting structural bone health, and regulating immune system signaling.

Classification :

Vitamins

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PRODUCT DETAILS

Specification Item	Standard / Value
Product Name	Vitamin D3 (Cholecalciferol)
CAS No.	67-97-0
Molecular Formula	C₂₇H₄₄O
Grade Standard	Food Grade / Pharma Grade / Feed Grade (USP/EP/BP/FCC)
Appearance	• Powder: White or off-white free-flowing powder • Oil: Clear yellow or pale yellow oily liquid
Assay (Potency / Activity)	• Powder Form: 100,000 IU/g / 500,000 IU/g (CWD/TAB) • Oil Form: 1,000,000 IU/g / 4,000,000 IU/g • Pure Crystal: ≥ 97.0% – 103.0% (approx. 40,000,000 IU/g)
Melting Point	82°C — 87°C (for Pure Crystal)
Specific Optical Rotation	+105.0° to +112.0°
Loss on Drying	≤ 5.0% (for powder formulations) / ≤ 0.5% (for pure crystal)
Heavy Metals (as Pb)	≤ 10 ppm
Arsenic (As)	≤ 2 ppm
Solubility	• CWD Powder: Cold water dispersible • Oil/Crystal: Soluble in fats and organic solvents, insoluble in water
Shelf Life	24 Months (2 Years)
Standard Packing	1 kg/Aluminium foil bag, 25 kg/Fiber drum (Powder) 25 kg/Blue plastic drum (Oil)

PACKAGING AND SHIPPING

L-Methionine is typically packaged in 25 kg fiber drums or multi-layer paper bags lined with polyethylene to protect it from moisture and external contaminants. Customized packaging solutions are available upon request to meet specific customer requirements and preferences.

By adhering to strict quality control standards, our L-Methionine guarantees high purity and effectiveness, making it a reliable ingredient for various applications across multiple industries.

Storage

To maintain its quality and potency, L-Methionine should be stored in a cool, dry place, away from direct sunlight and moisture. It is essential to keep the product in its original, tightly sealed container to prevent contamination and degradation. Proper storage conditions will ensure the stability and effectiveness of L-Methionine.

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FACTORY WORKSHOP

The company has a perfect R & D platform, testing platform, is committed to improving the level of human nutrition, improve the nutritional quality of Chinese residents, and promote the development of China's health cause.

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APPLICATION FIELD

Mewe Ingredients focuses on nutritional supplements, natural product concentrates, API and other high-end products for human healthy life, and is committed to the development and research of natural products with great market potential in pharmacological application and health care application, and to achieve industrialization and marketization.

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