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with Low Price Thymol Blue 76-61-9

Price $100.00
Min Order 25 kg
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Shipping From Liaoning, China
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Model NO.:
IND
CAS No.:
76-61-9
Formula:
C27h30o5s
EINECS:
200-973-3
Classification:
Organic Analytical Reagents
Grade:
Indicator
Specific Usage:
For Biological Purpose, For Scintillation
Content:
Standard
Usage:
Laboratory Reagents, Analytical Reagents
Source:
Concrete
Habit Appellation:
Thymol Blue 76-61-9 pH Indicator
Application:
Scientific Research
Property:
Organic Reagent
Molecular Weight:
466.59
Melting Point:
221–224 °c
Solubility in Water:
Insoluble
Appearance:
Brownish-Green Crystal Powder
Trademark:
Sinochembt
Transport Package:
25 Kgs Fiber Drums
Specification:
99.5%
Origin:
Shenyang
HS Code:
29270000
Product Description

Thymol blue (thymolsulfonephthalein) is a brownish-green or reddish-brown crystalline powder that is used as a pH indicator. It is insoluble in water but soluble in alcohol and dilute alkali solutions.

Thymol blue (pH indicator)
below pH 8.0 above pH 9.6
8.0⇌9.6
Thymol blue (pH indicator)
below pH 1.2 above pH 2.8
1.2⇌2.8

It transitions from red to yellow at pH 1.2-2.8 and from yellow to blue at pH 8.0-9.6. It is usually a component of Universal indicator.

At wavelength (378 - 382) nm, extinction coefficient > 8000 and at wavelength (298 - 302) nm , the extinction coefficient > 12000

GB/T 15352-94     
Item                                         (IND)                                       
pH Visual transition interval: 1.2(Red)~2.8(Yellow)
                                               8.0(Yellow)~9.6(Blue)

Mass absorptivity,L/(cm.g):≥71.0
Solubility in ethanol: Pass
Ignition residue,%:≤0.3



Grade                              ACS
                                    (ACS reagent, 95 %)
Appearance                         brownish-green or reddish-brown crystalline powder
Infrared spectrometry      Conforms
Dye content,                    95%
Purity                              221-224 °C 
Wavelength 595 - 599 nm
Extinction Coefficient          ≥30000
Wavelength 378 - 382 nm
Extinction Coefficient          ≥8000
Wavelength 298 - 302 nm
Extinction Coefficient          ≥12000
  c = 0.01g/l, 0.1N NaOH
visual transition interval:
  acid range:                          pH 1.2 (red) to pH 2.8 (yellow)
  alkaline range:                      pH 8.0 (yellow) to pH 9.2 (blue)
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