壬二酸

Description

Azelaic Acid · CAS 123-99-9 · C9H16O4. UNII F2VW3D43YT. Boiling Point: 286.5; Boiling Point: 357.1 °C; 287 °C at 100 mm Hg; Boiling Point: BP: 365 °C (decomposes).

Identification

CAS Registry Number	123-99-9
PubChem CID	2266
Molecular formula	C9H16O4
IUPAC name	nonanedioic acid
UNII (FDA)	F2VW3D43YT

Computed Descriptors

Molecular Weight	188.22
XLogP3	1.6
Hydrogen Bond Donor Count	2
Hydrogen Bond Acceptor Count	4
Rotatable Bond Count	8
Exact Mass	188.10485899
Monoisotopic Mass	188.10485899
Topological Polar Surface Area	74.6
Heavy Atom Count	13
Formal Charge	0

Physical & Chemical Properties

Boiling Point	286.5
Boiling Point	357.1 °C; 287 °C at 100 mm Hg
Boiling Point	BP: 365 °C (decomposes)
Melting Point	106.5
Melting Point	160.5 °C
Melting Point	106.5 °C
Flash Point	210 °C (closed cup)
Solubility	2400
Solubility	In water, 2.40X10+3 mg/L at 20 °C
Solubility	2.4 mg/mL

Physical description & handling notes

• Dry Powder; Other Solid; Large Crystals
• Yellowish to white solid; [HSDB] White flakes; [Acros Organics MSDS]
• Solid
• Monoclinic prismatic needles
• Yellowish to white crystalline powder
• Leaflets or needles

Regulatory Status

Regulatory & Food Contact	EU Flavoring substances FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS Flavoring Agents CIR / INCI: Cosmetic ingredients (Azelaic Acid) -> CIR (Cosmetic Ingredient Review)
GHS notification summary	6.5% (71 / 1087)

GHS Hazard Classification

GHS notification summary	6.5% (71 / 1087)
Reported hazard statements	H315 (40.2%), H319 (93.4%)

Documented Uses

• Found in rancid oleic acid; [Merck Index] Used in organic syntheses, lacquers, alkyd resins, low-temperature plasticizers, adhesives, polyamides, urethane elastomers, and for the treatment of acne; [HSDB] Natural component of foods such as whole grain cereals and animal products; [REPROTOX]
• Painting (Pigments, Binders, and Biocides) [Category: Paint]
• Working with Glues and Adhesives [Category: Other]
• Plastic Composites Manufacturing [Category: Industry]
• Azelaic acid is used in lacquers, alkyd resins, plasticizers, adhesives, polyamides, urethane elastomers, and organic syntheses. Azelaic acid is also used in treating of acne.
• Organic synthesis, lacquers, product of hydrotropic salts, alkyd resins, polyamides, polyester adhesives, low-temperature plasticizers, urethane elastomers

Synonyms

azelaic acid; NONANEDIOIC ACID; 123-99-9; Finacea; Anchoic acid; Lepargylic acid; 1,7-Heptanedicarboxylic acid; Azelex; Skinoren; Heptanedicarboxylic acid; Emerox 1110; 1,9-Nonanedioic acid; Emerox 1144; n-Nonanedioic acid; Acido azelaico; acide azelaique

Frequently Asked Questions

What are the CAS number and molecular formula of Azelaic Acid?

CAS 123-99-9; molecular formula C9H16O4; molecular weight — g/mol.

What other names is Azelaic Acid known by?

azelaic acid, NONANEDIOIC ACID, 123-99-9, Finacea, Anchoic acid, Lepargylic acid.

What is the regulatory status of Azelaic Acid?

Documented regulatory listings: EU Flavoring substances; FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS; Flavoring Agents.

Is Azelaic Acid classified as hazardous?

6.5% of GHS notifications report no hazard classification (71 of 1087).

What are the key physical properties of Azelaic Acid?

Boiling Point: 286.5; Boiling Point: 357.1 °C; 287 °C at 100 mm Hg; Boiling Point: BP: 365 °C (decomposes); Melting Point: 106.5.

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.