Melting point :>300°C
storage temp. :Inert atmosphere,Room Temperature
solubility :Solubility Soluble in water, ethanol
Colour Index :13080
form :Powder
pka :2.0(at 25℃)
color :S. No.: 179
PH Range :1.3(red)-3.2(yellow)
λmax :527nm, 443nm
Merck :14,9776
Stability :Stable. Incompatible with strong oxidizing agents.
Major Application :Sensors, lithographic plates, optical recording media, photoreceptor, inks, indication system for product exceeding threshold temperature, lubricants, textiles, food storage, determination of amiodarone, astemizole, bromhexine, clomipramine, deutiforin, domperidone, fluoroquinolone, roxithromycin, terfenadine, thiabendazole, antihistamines
CAS DataBase Reference :554-73-4(CAS DataBase Reference)
EPA Substance Registry System :Benzenesulfonic acid, 4-[[4-(phenylamino)phenyl]azo]-, monosodium salt (554-73-4)

Symbol(GHS):
Signal word:	Warning
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H228 Flammable solid Flammable solids Category 1 Category 2 Danger Warning P210, P240,P241, P280, P370+P378
Precautionary statements:	P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P240 Ground/bond container and receiving equipment. P241 Use explosion-proof electrical/ventilating/lighting/…/equipment. P280 Wear protective gloves/protective clothing/eye protection/face protection. P370+P378 In case of fire: Use … for extinction.