Blu timolo, indicatore, ACS

- Synonyms: Thymolsulfonphthalein, TB
- C27H30O5S
- M = 466,60 g/mol
- CAS [76-61-9]
- EINECS-No.: 200-973-3
- Melting point: 221 ºC
- Tariff number: 2934 99 90 90
- Applications: analytical chemistry, laboratory reagent, indicator.

SPECIFICATIONS
pH range 1: pink to brownish yellow : 1,2 - 2,8
pH range 2: greenish-yellow to blue : 8,0 - 9,2

Absorption max l1 (pH 1,2) : 543 - 547 nm
Absorption max l2 (pH 2,8) : 431 - 436 nm
Absorption max l3 (pH 7,8) : 431 - 436 nm
Absorption max l4 (pH 9,5) : 594 - 598 nm
Absorptivity (A1%/1 cm; l1, pH 1,2 on dried sample): 400 - 500
Absorptivity (A1%/1 cm; l2, pH 2,8 on dried sample): 200 - 300
Absorptivity (A1%/1 cm; l3, pH 7,8 on dried sample): 200 - 300
Absorptivity (A1%/1 cm; l4, pH 9,5 on dried sample): 450 - 550
loss on drying (110 ºC): max. 3 %