Product Description
| Name |
Bromothymol Blue |
| Synonyms |
3',3''-Dibromothymolsulfonephthalein; BTB |
| |
| Molecular Structure |
|
| Molecular Formula |
C27H28Br2O5S |
| Molecular Weight |
624.38 |
| CAS Registry Number |
76-59-5 |
| EINECS |
200-971-2 |
| |
Properties
| Melting point |
204 ºC |
| Water solubility |
slightly soluble |
Chemical Property/Description:
Purple to pink powder,It is an organic pigment with good dyeing effect and stability.
A common preparation is by brominating bromothymol and then coupling it with a suitable aromatic aldehyde compound or aromatic amine. The preparation process requires appropriate catalyst and solvent to promote the reaction.
It is an indicator used in the determination of weak acid and weak base, which is yellow when acidic and blue when alkaline. Its acid-base balance is: C27H28Br2O5S H+ + C27H27Br2O5S Bromothymol blue has a pKa of 7.10.
Main Uses:
1. Used as acid-base indicator,pH discoloration range 6.0(yellow) ~ 7.6(blue). Also used for adsorption indicator.
2. Used as an extraction separating agent for spectrophotometric determination of quaternary ammonium cation.
It is widely used in textile, leather, paint, ink and other industries. It can be used as a dye, pigment and indicator to give certain materials a deep blue color.
What is the main function of bromothymol blue?
1. Acid base indicator: Bromothymol blue will show different colors in different acidic and alkaline environments, helping doctors determine the acid-base balance in patients' bodies.
2. Auxiliary diagnosis: In gastroscopy examination, bromothymol blue can be used to observe the acid-base changes of gastric mucosa and assist in the diagnosis of gastric diseases.
Detailed Photos
FAQ
FAQ
Question 1: Can I get samples?
Answer: Yes,you can get free samples of our most products,
while the courier cost will be borne by the buyers.
Question 2: What's your MOQ?
Answer: For a express delivery order,the MOQ is usually 100 g~1 kg;
for an air transport order or sea delivery order ,the MOQ is usually 25 kgs.
Question 3: What's your delivery time?
Answer:
Orders shipped by express delivery,the delivery time is usually 5~7 working days;
Orders shipped by air transport,usually around 7~10 working days;
Orders shipped by sea , usually around 2~3 working weeks.
Question 4: What are the different payment methods?
Answer: We usually accept T/T, L/C and Western Union.
Question 5: How do you treat quality complaint?
We take quality very seriously, it is one of the founding principles of our business.
If the quality problem actually exists, we will replace with qualified goods or refund the money.
Audited Supplier 
){kind=link}