Thymolphthalein indicator , 90%(V/V) Ethanol contains 0.05%(W/V) , 125-20-2

Synonym(s):
5′,5′′-Diisopropyl-2′,2′′-dimethylphenolphthalein;Thymolphthalein

Update time: 2022-07-08

Melting point:	251-253 °C(lit.)
Boiling point:	504.79°C (rough estimate)
Density	0.92 g/mL at 25 °C
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
Odor	Mild characteristic odor
PH Range	9.3(colourless)-10.5(blue)
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℃

Thymolphthalein is a pH sensitive dye that has multiple uses such as testing hydration and/or saliva testing.