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Cosmetic and personal care ingredients

Niacinamide vs niacin

Niacinamide (C6H6N2O, CAS 98-92-0) and niacin (C6H5NO2, CAS 59-67-6) are both listed under vitamins and nutraceutical actives.

Niacinamide has a molar mass of 122.13 g/mol, niacin 123.11 g/mol.

Measured melting points are 128.8 °C for niacinamide and 237 °C for niacin.

Both carry the GHS signal word Warning.

On CompoundList, 318 suppliers list niacinamide and 244 suppliers list niacin.

Data last updated 7 October 2026

Niacinamide and niacin compared side by side
Nicotinamide chemical structure, C6H6N2O, CAS 98-92-0
Niacinamide
Nicotinic acid chemical structure, C6H5NO2, CAS 59-67-6
Niacin
Identity
Name in our databaseNicotinamideNicotinic acid
CAS number98-92-059-67-6
Molecular formulaC6H6N2OC6H5NO2
Molar mass122.13 g/mol123.11 g/mol
IUPAC namepyridine-3-carboxamidepyridine-3-carboxylic acid
EC number202-713-4200-441-0
Physical properties
AppearanceWhite, powder, needles from benzeneNeedles from alcohol or water
Melting point128.8 °C237 °C
Boiling point157 °CSublimes
Density1.400 g/cm³ at 25 °C1.473 g/cm³ at 25 °C
Flash point182 °C193 °C
SolubilityIn water, 5 × 10⁺⁵ mg/L at 25 °CIn water, 1.8 × 10⁺⁴ mg/L at 20 °C
LogP (octanol/water)Computed from the structure0.180.78
Safety (GHS)
Signal wordWarningWarning
Pictograms
GHS07: Harmful or irritant
GHS07: Harmful or irritant
Hazard statements
  • H315 Causes skin irritation.
  • H319 Causes serious eye irritation.
  • H335 May cause respiratory irritation.
  • H319 Causes serious eye irritation.
Uses and classification
Uses and functions
  • Vitamins and supplements
  • Skin conditioning agents
  • Vitamins, minerals and nutrients
  • Feed vitamins
  • Escherichia coli metabolite
  • Saccharomyces cerevisiae metabolite
  • Cardiovascular drugs
  • Vitamins and supplements
  • Skin conditioning agents
  • Hair conditioning agents
  • Vitamins, minerals and nutrients
  • Feed vitamins
CategoryPharmaceuticals and APIs › Vitamins and nutraceutical activesPharmaceuticals and APIs › Vitamins and nutraceutical actives
HS code293629Vitamins and their derivatives, unmixed, other vitamins and their derivatives293979Alkaloids, natural or reproduced by synthesis, and their salts, ethers, esters and other…
Market on CompoundList
Suppliers318 suppliers244 suppliers
Supplier countries40 countries, most in China, India, United States32 countries, most in China, United States, India
Price rangeOnly prices set by suppliers who manage their own profilePrice on requestPrice on request

Measured and computed values as shown on each chemical page, plus live listings on CompoundList. Details may have changed, please confirm them with the supplier. Safety data is a summary, not an SDS.

Niacinamide
Niacin

More comparisons

Other common chemical pairs, compared the same way.

Niacinamide vs niacin: properties, uses and safety compared