Melting point :287 °C
Boiling point :430 °C
Density :1.06 g/mL at 20 °C
refractive index :1.5190 (estimate)
Flash point :430°C subl.
storage temp. :Inert atmosphere,Room Temperature
solubility :Solubility Virtually insoluble in water; moderately soluble in ethanol, soluble in benzene, toluene, Ixylene, pyridine, acetic acid
form :Fine Powder
pka :6.77(at 25℃)
Colour Index :58000
color :Orange to orange-brown
PH Range :Yellow (5.5) to red (6.8);Red (10.1) to purple (12.1)
PH :5.5～7.2
Water Solubility :Soluble in hexane and chloroform. Slightly soluble in water.
λmax :567nm, 609nm
ε(extinction coefficient) :13000 at 227-233nm in 0.1 M NaOH at 0.01g/L
26000 at 268-274nm in 0.1 M NaOH at 0.01g/L Merck :14,251
BRN :1914037
Stability :Stable. Incompatible with strong oxidizing agents, strong bases.
Biological Applications :Detecting microorganisms; treating dermatological conditions
Major Application :Plasma displays, Antireflective coatings, chemical-mechanical polishing, photoreceptors, glass coatings, paints, anticorrosion coatings, thermoplastics, wood coloring, textiles, pH sensor device, detergent, hair dyes, darkening skin, cosmetics, parasiticide, antifungal agent
InChIKey :RGCKGOZRHPZPFP-UHFFFAOYSA-N
LogP :2.479 (est)
CAS DataBase Reference :72-48-0(CAS DataBase Reference)
NIST Chemistry Reference :Alizarin(72-48-0)
EPA Substance Registry System :Alizarin (72-48-0)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H317 May cause an allergic skin reaction Sensitisation, Skin Category 1 Warning P261, P272, P280, P302+P352,P333+P313, P321, P363, P501 H318 Causes serious eye damage Serious eye damage/eye irritation Category 1 Danger P280, P305+P351+P338, P310 H410 Very toxic to aquatic life with long lasting effects Hazardous to the aquatic environment, long-term hazard Category 1 Warning P273, P391, P501
Precautionary statements:	P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P272 Contaminated work clothing should not be allowed out of the workplace. P273 Avoid release to the environment. P280 Wear protective gloves/protective clothing/eye protection/face protection. P302+P352 IF ON SKIN: wash with plenty of soap and water. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.