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Thymol Blue Structure

Thymol Blue

Chemical Properties

Melting point 221-224 °C (dec.) (lit.)
Boiling point 539.4°C (rough estimate)
Density  1.1413 (rough estimate)
refractive index  1.5300 (estimate)
Flash point 36 °C
storage temp.  room temp
solubility  0.11g/l
form  Solid
pka Pka1:1.65(at 25℃)(PH=1.2 to 2.8) Pka2:8.9(at 25℃)(PH=8.0 to 9.6)
color  Dark green to dark brown
PH Range 1.2(red)-2.8(yellow) 8(yellow)-9.6(blue)
Odor Characteristic odour
Water Solubility  Soluble in alcohol and dilute alkali solutions. Insoluble in water.
λmax 594nm, 376nm, 544nm, 430nm
Merck  14,9400
BRN  368036
Stability Stable. Combustible. Dust may form an explosive mixture with air. Incompatible with strong oxidizing agents.
Major Application Display device, semiconductors, sensors, fuel cells, antimisting coating for glass, toys, corrosion inhibitor, multi-level alert system, correction fluid, textiles, falsification-proof security paper, packaging system, measurement of hydrogen ion concentrationin swimming pool water, humidity-indicating agent, diapers, cosmetics, biostatic materials, determine bacteria growth, psychoactive drugs, antidepressant drugs, dental impression material
CAS DataBase Reference 76-61-9(CAS DataBase Reference)
NIST Chemistry Reference Thymolsulfonephthalein(76-61-9)
EPA Substance Registry System Phenol, 4,4'-(1,1-dioxido-3H-2,1-benzoxathiol-3-ylidene)bis[5-methyl-2-(1-methylethyl)- (76-61-9)

Safety Information

Risk Statements  10
Safety Statements  24/25
RIDADR  UN 1170 3/PG 3
WGK Germany  3
RTECS  XP2575000
TSCA  Yes
HS Code  2934 99 90
PackingGroup  II

MSDS

Usage And Synthesis

Preparation Products And Raw materials

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