Melting point :251-253 °C(lit.)
Boiling point :504.79°C (rough estimate)
Density :0.92 g/mL at 25 °C
bulk density :400kg/m3
vapor pressure :0.002Pa at 90℃
refractive index :1.6400 (estimate)
Flash point :74 °F
storage temp. :no restrictions.
solubility :ethanol: clarity passes test
form :Low Melting Mass
pka :9.70, 10.0(at 25℃)
color :White to slightly yellow
Specific Gravity :0.92
PH :8.6～10.5
PH Range :9.3(colourless)-10.5(blue)
Odor :Mild characteristic odor
explosive limit :3.30-19%
Water Solubility :insoluble
λmax :592nm, 396nm, 598nm
Merck :14,9401
BRN :359413
Major Application :Display device, semiconductors, recording materials, photoconductors, sol-gel matrix, tin electroplating process, counterfeit-proof paper, authentication system forsecure documents, inks, pencil leads, correction fluid, paints, petroleum marker, tennis ball, adhesives, floor coatings, textiles, detergents, insecticide, lotion, cleaning pads, food storage, determine bacterial growth, Streptococci in saliva, dental impressionmaterials
InChIKey :GRBHJPCWQRVGND-UHFFFAOYSA-N
LogP :3.682 at 25℃
CAS DataBase Reference :125-20-2(CAS DataBase Reference)
EPA Substance Registry System :Thymolphthalein (125-20-2)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H225 Highly Flammable liquid and vapour Flammable liquids Category 2 Danger P210,P233, P240, P241, P242, P243,P280, P303+ P361+P353, P370+P378,P403+P235, P501 H313 May be harmful in contact with skin Acute toxicity,dermal Category 5 P312 H333 May be harmful if inhaled Acute toxicity,inhalation Category 5 P304+P312 H371 May cause damage to organs Specific target organ toxicity, single exposure Category 2 Warning P260, P264, P270, P309+P311, P405,P501
Precautionary statements:	P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P260 Do not breathe dust/fume/gas/mist/vapours/spray. P303+P361+P353 IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. P405 Store locked up.