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Hot Selling 99% Purity Bromophenol Blue for Acid-Base Indicator CAS 115-39-9
| Price | $120.00 |
|---|---|
| Min Order | 10 kg |
| Availability | In Stock |
| Shipping From | Liaoning, China |
| Popularity | 420 people viewed |
Model NO.:
IND
CAS No.:
115-39-9
Formula:
C19h10br4o5s
EINECS:
204-086-2
Classification:
Organic Analytical Reagents
Grade:
Ind
Specific Usage:
For Biological Purpose, Technical Grade
Content:
Standard
Usage:
Laboratory Reagents, Analytical Reagents
Source:
Concrete
Habit Appellation:
Fine Chemicals
Application:
Scientific Research
Property:
Organic Reagent
Trademark:
Sinochembt
Transport Package:
25 Kgs Fiber Drums
Specification:
99.5%
Origin:
Shenyang
HS Code:
29349990
Product Description
Bromophenol blue (3′,3″,5′,5″-tetrabromophenolsulfonphthalein, BPB), albutest is used as a pH indicator, an electrophoretic color marker, and a dye. It can be prepared by slowly adding excess br omine to a hot solution of phenolsulfonphthalein in glacial acetic acid.
Acid-base indicator
| Bromophenol blue (pH indicator) | ||
| below pH 3.5 | above pH 4.6 | |
| 3.5 | ⇌ | 4.6 |
As an acid-base indicator, its useful range lies between pH 3.0 and 4.6. It changes from yellow at pH 3.0 to blue at pH 4.6; this reaction is reversible. Bromophenol blue is structurally related to phenolphthalein (a popular indicator).
GB/T 12592-90
(AR)
Appearance Tan to Orange Powder
Infrared spectrum Conforms to structure
Claroty of solution Pass
Visual transition interval pH3.0(yellow)- pH4.6(blue)
ltem
(Ind)
pHVisnal transition interval 3.0()~4.6()
Mass absorptivity,L/cm·g ≥115
Solubility in ethanol
()Ignition residue,% ≤0.25
ACS
(ACS Grade)
Appearance
Infrared spectrometry
Claroty of solution
Visual transition interval pH3.0()- pH4.6()
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