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Name Azelaic acid
CAS 123-99-9
EINECS(EC#) 204-669-1
Molecular Formula C9H16O4
MDL Number MFCD00004432
Molecular Weight 188.22
MOL File 123-99-9.mol

Chemical Properties

Appearance white to cream solid
Melting point  98 °C
Boiling point  286 °C100 mm Hg(lit.)
density  1,029 g/cm3
vapor density  6.5 (vs air)
vapor pressure  <1 mm Hg ( 20 °C)
refractive index  1.4303
Fp  215 °C
storage temp.  Store below +30°C.
solubility  2.4g/l
form  Slightly Crystalline Powder or Flakes
pka 4.53, 5.33(at 25℃)
color  White to slightly yellow
PH 3.5 (1g/l, H2O)
Stability: Stable. Combustible. Incompatible with bases, strong oxidizing agents. Readily biodegrades in soil and water with >70% DOC reduction after 28 days.
Water Solubility  2.4 g/L (20 ºC)
Merck  14,905
BRN  1101094
CAS DataBase Reference 123-99-9(CAS DataBase Reference)
NIST Chemistry Reference Nonanedioic acid(123-99-9)
EPA Substance Registry System Azelaic acid (123-99-9)

Safety Data

Hazard Codes  Xi
Risk Statements 
R36/37/38:Irritating to eyes, respiratory system and skin .
Safety Statements 
S24/25:Avoid contact with skin and eyes .
S36:Wear suitable protective clothing .
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
WGK Germany  1
RTECS  CM1980000
HS Code  29171390
Hazardous Substances Data 123-99-9(Hazardous Substances Data)
LD50 orally in Rabbit: > 4000 mg/kg LD50 dermal Rat > 10 g/kg

Hazard Information

Material Safety Data Sheet(MSDS)

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