Hot Selling 99% Purity Bromothymol Blue for Acid-Base Indicator CAS 76-59-5

Product Details
Customization: Available
CAS No.: 76-59-5
Formula: C27h28br2o5s
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Registered Capital
200 RMB
Plant Area
101~500 square meters
  • Hot Selling 99% Purity Bromothymol Blue for Acid-Base Indicator CAS 76-59-5
  • Hot Selling 99% Purity Bromothymol Blue for Acid-Base Indicator CAS 76-59-5
  • Hot Selling 99% Purity Bromothymol Blue for Acid-Base Indicator CAS 76-59-5
  • Hot Selling 99% Purity Bromothymol Blue for Acid-Base Indicator CAS 76-59-5
  • Hot Selling 99% Purity Bromothymol Blue for Acid-Base Indicator CAS 76-59-5
  • Hot Selling 99% Purity Bromothymol Blue for Acid-Base Indicator CAS 76-59-5
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Basic Info.

Model NO.
IND
EINECS
200-971-2
Classification
Organic Analytical Reagents
Grade
Ind
Specific Usage
For Biological Purpose, For Microbiological, For Microscopic Purpose
Content
Standard
Usage
Laboratory Reagents, Analytical Reagents
Source
Concrete
Habit Appellation
Fine Chemicals
Application
Scientific Research
Property
Organic Reagent
Density
1.25 g/cm3
Melting Point
202 °c
Solubility in Water
Sparingly Soluble in Water
Acidity (Pka)
7.0
Transport Package
25 Kgs Fiber Drums
Specification
99.5%
Trademark
Sinochembt
Origin
Shenyang
HS Code
29349990
Production Capacity
500kgs Per Month

Product Description

Bromothymol blue (also known as bromothymol sulfone phthalein and BTB) is a pH indicator. It is mostly used in applications that require measuring substances that would have a relatively neutral pH (near 7). A common use is for measuring the presence of carbonic acid in a liquid. It is typically sold in solid form as the sodium salt of the acid indicator.

Bromothymol blue (pH indicator)
below pH 6.0   above pH 7.6
6.0 7.6

Bromothymol blue acts as a weak acid in a solution. It can thus be in protonated or deprotonated form, appearing yellow or blue, respectively. It is bright aquamarine by itself, and greenish-blue in a neutral solution. The deprotonation of the neutral form results in a highly conjugated structure, accounting for the difference in color. An intermediate of the deprotonation mechanism is responsible for the greenish color in neutral solution.
 

ltem
                                                      (acid-base indicator)
pHVisual transition                        6.0()~7.6()
Mass absorptivity,L/cm·g               ≥52.0
Solubility(in ethanol)         
Ignition residue,%                       ≤0.3
 
 
                                                        ACS,95 %    
                                                       (ACS, Dye content 95 %)
Appearance                             
Infrared spectrometry          
Dye content(HPLC)                        ≥95% 
Claroty of solution                  
Visual transition interval                 pH 6.0(Yellow-Green)-pH 6.7(Green)-pH 7.6 (Blue)
Wavelength                                   419- 425 nm
c = 0.02g/L; Me thanol
Extinction Coefficient                     17,000
Wavelength                                    326- 332 nm
Extinction Coefficient                       8,000
Wavelength                                    279- 285 nm
Extinction Coefficient                      9,000
Hot Selling 99% Purity Bromothymol Blue for Acid-Base Indicator CAS 76-59-5Hot Selling 99% Purity Bromothymol Blue for Acid-Base Indicator CAS 76-59-5

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