Thymolphthalein

grade

ACS reagent

Quality Level

200

Agency

reag. Ph. Eur.

form

solid

loss

≤1% loss on drying 110°C

color

white to almost white

visual transition interval

9.0-10.5 colorless to blue

mp

253 °C

bulk density

400 kg/m³

λ_max

592-596 nm (buffer pH 10.5)

storage temp.

2-30°C

InChI

1S/C28H30O4/c1-15(2)20-13-23(17(5)11-25(20)29)28(22-10-8-7-9-19(22)27(31)32-28)24-14-21(16(3)4)26(30)12-18(24)6/h7-16 29-30H 1-6H3

InChI key

LDKDGDIWEUUXSH-UHFFFAOYSA-N