Niacin (Vitamin B3) Bulk Guide: Grades, CAS 59-67-6 & Applications for Feed and Food
Jun 14,2026
Niacin (Vitamin B3) is a cornerstone ingredient across the feed, food, and pharmaceutical industries.*
Niacin, also known as Vitamin B3 or Nicotinic Acid, is one of the most versatile and widely used B vitamins in the food, feed, and pharmaceutical industries. As a specialized supplier of human nutrition and animal health ingredients, Henan Liyin Biotech offers high-quality Niacin in multiple grades to meet the diverse needs of global buyers.
This guide covers everything you need to know when sourcing Niacin in bulk.
What Is Niacin (Vitamin B3)
Niacin (Vitamin B3) is a water-soluble vitamin available in white crystalline powder form for bulk industrial use.
Niacin (CAS 59-67-6, Molecular Formula C6H5NO2) is a water-soluble vitamin that plays a critical role in energy metabolism. It is a key component of coenzymes NAD and NADP, which are involved in over 400 enzymatic reactions in the body, including:
- Conversion of food into energy
- DNA repair and cell signaling
- Synthesis of fatty acids and cholesterol
- Antioxidant protection
Niacin exists in two main forms: **Nicotinic Acid** and **Niacinamide (Nicotinamide)**. While both forms deliver vitamin B3 activity, they differ in their physiological effects — Nicotinic Acid is known for its cholesterol-lowering benefits, while Niacinamide is preferred for applications where the "niacin flush" is undesirable.
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Niacin Grades and Their Applications
When sourcing Niacin in bulk, it is essential to select the correct grade for your target application.
| Grade | Purity | Typical Applications |
|-------|--------|---------------------|
| Feed Grade | 99%+ | Poultry, swine, ruminant and aquaculture feed premixes |
| Food Grade | 99%+ | Food fortification (flour, cereals, beverages), dietary supplements |
| Pharmaceutical Grade | 99.5%+ | Pharmaceutical formulations, injectable solutions |
Feed Grade Niacin
In animal nutrition, Niacin is essential for:
- Promoting growth and feed conversion efficiency in poultry and livestock
- Preventing pellagra and other niacin deficiency symptoms
- Supporting skin health and feather quality in poultry
- Enhancing energy metabolism in high-performance animals
Typical inclusion rates range from 15-50 mg/kg of complete feed depending on the species and production stage.
Food Grade Niacin
Food grade Niacin is widely used in dietary supplements, fortified foods, and functional beverages.
For human consumption, Niacin is widely used in:
- Fortified flour and cereal products
- Multivitamin premixes
- Energy drinks and functional beverages
- Dietary supplement tablets and capsules
Niacin for Industrial Use
Beyond nutrition, Niacin also serves as a corrosion inhibitor in industrial applications and as an intermediate in chemical synthesis.
Bulk Sourcing Considerations
Purity and Quality
Every batch of Liyin Niacin undergoes rigorous quality testing including HPLC assay and heavy metal analysis.
At Henan Liyin Biotech, our Niacin is manufactured to strict quality standards. Each batch is tested for:
- Assay (HPLC) — typically 99%+
- Heavy metals — compliant with global pharmacopoeia limits
- Microbial limits
- Particle size distribution
We provide a Certificate of Analysis (COA) with every shipment.
### Packaging Options
| Package Type | Net Weight |
|-------------|-----------|
| Foil Bag | 1 kg |
| Fiber Drum | 25 kg |
| Custom packaging | Upon request |
### MOQ and Lead Time
- Standard MOQ: 25 kg per product
- Lead time: 7-15 working days for standard orders
- Sample policy: Free samples available for quality evaluation
Why Choose Liyin Bio for Niacin?
- Direct factory supply with competitive pricing
- Consistent quality with batch-to-batch traceability
- Experienced export team for smooth international logistics
- Flexible packaging and customized solutions
Contact Us

Contact our team for bulk Niacin pricing, technical specifications, and free samples.
For bulk Niacin inquiries, pricing, or free samples:
Email:yolanda@liyinbio.com
Phone/WhatsApp: +86-15824830539
Website: www.liyinbio.com
Henan Liyin Biotech Co., Ltd — Your trusted partner in vitamin supply.
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