Melting point :300 °C
Density :1.55[at 20℃]
vapor pressure :0.001Pa at 25℃
storage temp. :Desiccate at RT
solubility :insoluble in EtOH; ≥18 mg/mL in H2O; ≥28.6 mg/mL in DMSO
form :solid
color :Pale yellow
Water Solubility :43g/L at 20℃
LogP :-3.2 at 20℃
CAS DataBase Reference :6640-22-8(CAS DataBase Reference)
EPA Substance Registry System :2-Naphthalenecarboxylic acid, 4,4'-methylenebis[3-hydroxy-, disodium salt (6640-22-8)

Symbol(GHS):
Signal word:	Warning
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H302 Harmful if swallowed Acute toxicity,oral Category 4 Warning P264, P270, P301+P312, P330, P501 H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning P264, P280, P302+P352, P321,P332+P313, P362 H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning
Precautionary statements:	P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.