Nicotinamide

It is white needle crystal or crystalline powder, no smell or odor slightly, slightly bitter taste. The relative density is 1.4, melting point is 131-132 ℃.1 g of the above the product is soluble in 1 ml of water, 1.5 ml ethanol or 10 ml glycerin, insoluble in ether. The pH of 10% aqueous solution is 6.5-7.5. in dry air to light and heat stability, in alkaline or acidic solution, heating generation to nicotinic acid. Rats by oral LD502.5-3.5g/kg ADI value does not make special provisions (ECC, 1990)

A white, crystalline powder. It is odorless or nearly so, and has a bitter taste. Its solutions are neutral to litmus. One g dissolves in about 1 mL of water, in about 1.5 mL of alcohol, and in about 10 mL of glycerin.

Niacinamide (Nicotinamide) is a white crystalline powder or forms colorless needle-like crystals.

ChEBI: A pyridinecarboxamide that is pyridine in which the hydrogen at position 3 is replaced by a carboxamide group.

Vitamin B3was formerly called nicotinic acid; however, the term niacin is now preferred to avoid any confusion with the alkaloid, nicotine. Niacinamide, also known as nicotinamide, refers to the amide derivative of niacin that is equivalent in vitamin activity. Some texts use niacin to refer to nicotinic acid, niacinamide, and any derivatives with vitamin activity comparable to niacin. Furthermore, research and chemistry-based resources use the terms nicotinic acid and nicotinamide; whereas pharmacy resources use niacin and niacinamide.

Nicotinamide is a water-soluble B complex vitamin which is naturally present in animal products, whole cereals and legumes. Together with nicotinic acid (niacin), it belongs to vitamin B3 or vitamin PP, and is required as a nutrient to prevent the niacin deficiency disorder pellagra. It functions as a coenzyme or cosubstrate in many biological reduction and oxidation reactions required for energy metabolism in mammalian systems. It is used as a nutritional supplement, therapeutic agent, skin and hair conditioning agent in cosmetics, and a constituent of consumer household solvent and cleaning products and paints. Nicotinamide is approved for use by the FDA as a food additive to enrich corn meal, farina, rice, and macaroni and noodle products. It is also affirmed as GRAS (Generally Recognized as Safe) by the FDA as a direct human food ingredient which includes its use in infant formula. It is approved for use in pesticide products applied to growing crops only as a synergist with a maximum limitation of 0.5% of formulation.

Niacinamide is a nutrient and dietary supplement that is an available form of niacin. Nicotinic acid is pyridine beta-carboxylic acid and nicotinamide, which is another term for niacinamide, is the corresponding amide. It is a powder of good water solubility, having a solubility of 1 g in 1 ml of water. Unlike niacin, it has a bitter taste; the taste is masked in the encapsulated form. Used in fortification of cereals, snack foods, and powdered beverages. niacinamide is used as a skin stimulant and skin smoother. Niacinamide USP is used as food additive, for multivitamin preparations and as intermediate for pharmaceuticals and cosmetics.