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Good Quality with Low Price Thymol Blue 76-61-9
| Price | $100.00 |
|---|---|
| Min Order | 25 kg |
| Availability | In Stock |
| Shipping From | Liaoning, China |
| Popularity | 302 people viewed |
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 15352-94Item (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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