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Thymol Blue

Basic information Safety Supplier Related

Thymol Blue Basic information

Product Name:
Thymol Blue
Synonyms:
  • THYMOLSULFONEPHTHALEIN
  • THYMOL BLUE TS
  • THYMOLSULFONPHTHALEIN
  • THYMOL BLUE ETHANOL (50)
  • THYMOL BLUE INDICATOR SOLUTION
  • THYMOL BLUE
  • TB
  • S NO 879
CAS:
76-61-9
MF:
C27H30O5S
MW:
466.59
EINECS:
200-973-3
Product Categories:
  • Sulfonephthalein
  • Analytical Chemistry
  • Indicator (pH)
  • pH Indicators
Mol File:
76-61-9.mol
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Thymol Blue Chemical Properties

Melting point:
221 °C
Boiling point:
539.4°C (rough estimate)
Density 
1.1413 (rough estimate)
refractive index 
1.5300 (estimate)
Flash point:
36 °C
storage temp. 
Store at RT.
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
Odor
Characteristic odour
PH Range
1.2(red)-2.8(yellow) 8(yellow)-9.6(blue)
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)
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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

  • Language:English Provider:ACROS
  • Language:English Provider:ALFA
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Thymol Blue Usage And Synthesis

Chemical Properties

brown to green powder or crystals

Uses

As as acid-base indicator; pH: red 1.2 to yellow 2.8; also yellow 8.0 to blue 9.6.

Thymol Blue Preparation Products And Raw materials

Preparation Products

Thymol BlueSupplier

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