Description
Bromothymol blue
indicator ACS,Reag. Ph Eur
Synonym(s):
Bromothymol blue, 3′,3′′-Dibromothymolsulfonphthalein, BTB
Empirical Formula (Hill Notation):
C27H28Br2O5S
CAS Number:
76-59-5
Molecular Weight:
624.38
MDL number:
MFCD00005872
EC Index Number:
200-971-2
PROPERTIES
grade
ACS reagent
Quality Level
200
agency
reag. Ph. Eur.
form
solid
loss
≤3% loss on drying, 110°C
visual transition interval
5.8-7.6, yellow to blue
bulk density
450 kg/m3
storage temp.
2-30°C
InChI
1S/C27H28Br2O5S/c1-13(2)17-11-20(15(5)23(28)25(17)30)27(19-9-7-8-10-22(19)35(32,33)34-27)21-12-18(14(3)4)26(31)24(29)16(21)6/h7-14,30-31H,1-6H3
InChI key
NUHCTOLBWMJMLX-UHFFFAOYSA-N
Analysis Note
Transition range: pH 5.8 - pH 7.6yellow - blue
Appearance of solution: passes test
Loss on drying (110 °C): ≤ 3
Transition range (according to ACS): passes test
Sensitivity test: passes test
Appearance of solution: passes test
Loss on drying (110 °C): ≤ 3
Transition range (according to ACS): passes test
Sensitivity test: passes test
SAFETY INFORMATION
Storage Class
11 - Combustible Solids
wgk_germany
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable