Melting point :223 °C (dec.)(lit.)
Boiling point :481.89°C (rough estimate)
Density :1.3724 (rough estimate)
refractive index :1.5180 (estimate)
storage temp. :room temp
solubility :DMF: 5 mg/ml; DMSO: 5 mg/ml
pka :9.34±0.20(Predicted)
form :powder
color :red-brown
Water Solubility :Soluble in water (partly), methanol (10 mg/ml), and acetone.
BRN :48395
Stability :Light and Moisture Sensitive
InChIKey :GZAJOEGTZDUSKS-UHFFFAOYSA-N
CAS DataBase Reference :3326-34-9(CAS DataBase Reference)
EPA Substance Registry System :Spiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3-one, 5-amino-3',6'-dihydroxy- (3326-34-9)

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. P264 Wash hands thoroughly after handling. P264 Wash skin thouroughly after handling. P270 Do not eat, drink or smoke when using this product. P301+P312 IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell. 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.