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Azelaic acid

CAS Number
123-99-9
EC Number
204-669-1
Chemical Formula
C9H16O4
Molecular Weight
188.22 g/mol

Description

Azelaic acid (CAS 123-99-9 ) is a saturated dicarboxylic acid used as a functional building block and active ingredient across cosmetic, polymer, and industrial lubricant applications. It is commercially recognized under the pharmaceutical trade names Skinoren and Skinorem, particularly in dermatological product sourcing contexts for various global markets. In personal care and pharmaceutical formulations, this acid is the active ingredient in topical products targeting acne and hyperpigmentation, where it functions as a pH-regulating and antimicrobial agent. Polymer manufacturers use it as a monomer to produce polyamides and polyesters with improved flexibility and low-temperature performance, particularly in specialty coatings and adhesives. In lubricant formulations, azelaic acid esters produced through esterification with branched alcohols serve as synthetic base fluids and plasticizers suited to high-performance and low-temperature applications. It also acts as a corrosion inhibitor and dispersant additive in metalworking fluids. The material is supplied as a white crystalline powder or granules for easy handling and processing. Standard commercial grades include technical, cosmetic, and pharmaceutical grades, with the latter meeting USP and Ph. Eur. specifications for high-purity manufacturing requirements. Purity levels of 98–99%+ are typical for high-specification applications, while technical-grade material is available for polymer and lubricant end uses across the chemical industry. Contact us for supply of Azelaic acid Request Quote

Other Names (Synonyms)

Skinoren | Skinorem | Polyazelaic anhydride | Nonanedioic acid homopolymer | Nonanedioic acid azelaic acid | Nonanedioic acid | Nonandisäure

Key Technical Features

  • High Purity Grade standard
  • Consistent Batch Quality
  • Full Regulatory & REACH Support
  • Global Logistics Network enabled

Physical Properties

Melting Point106.5 °C
Boiling Point225 °C @ Press: 10 Torr
Density1.251 g/cm³
Flash Point215 °C
Appearancewhite to cream solid
ColorWhite to slightly yellow
FormSlightly Crystalline Powder or Flakes
Water Solubility2.4 g/L (20 ºC)
Vapor Pressure<1 mm Hg ( 20 °C)
Refractive Index1.4303
pH3.5 (1g/l, H2O)
Log P1.57 at 25℃

Safety & Handling

Warning
GHS07· Irritant

Hazard Statements

H315Causes skin irritation
H319Causes serious eye irritation

Precautionary Statements

P264Wash … thoroughly after handling.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P321Specific treatment (see … on this label).
P265Wash … thoroughly after handling.
P352IF ON SKIN: Wash with plenty of water.
P317Get emergency medical help.
P317If eye irritation persists: Get medical advice/attention. Get emergency medical help.
P364Take off contaminated clothing and wash it before reuse.
P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Trade & Regulatory

HS Code29171390
Storage Class11 - Combustible Solids
WGK (Germany)1