| Type: | Pharmaceutical Intermediates |
|---|---|
| Appearance: | Powder |
| Quality: | Refined |
| CAS No.: | 76-59-5 |
| Formula: | C27h28br2o5s |
| Einecs: | 200-971-2 |
| Samples: |
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| Customization: |
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Hunan Yunbang Pharmaceutical Co., Ltd. (Yunbangpharm) located in Changsha High-tech Industrial Park, Hunan. It is a high-tech enterprise specializing in the research and development, production and sales of Pharmaceutical raw materials, Pharmaceutical intermediates(API) and Fine chemicals. Based in China, Yunbangpharm has been providing suitable solutions for many domestic,foreign pharmaceutical companies and traders. Excellent quality, good reputation and authentic price have won the praise of the majority of customers.
The company adheres to the corporate tenet of "We do not produce medicines, but help pharmaceutical companies make good medicines".1:Can I get some samples before bulk order?
A: Most products provide free samples, but the shipping cost be paid by customers.
2: What's your MOQ?
A: We can have a discussion.
3: Which kind of payment terms do you accept?
A: PI will be sent first after confirmation of order,enclosed our bank information.Payment by T/T, Western Union,D/P, ETC.
4.How to place an order?
A: You can contact me through Trademanager, WhatsApp, Email and other contact methods, tell me the product and quantity you need, and then we will give you a quote.
5:How about your delivery time?
A: Generally, it will take 3 to 5 days after receiving your advance payment.
6:How do you treat quality complaint?
A: First of all, our quality control will reduce the quality problem to near zero. If there is a real quality problem caused by us, we will send you free goods for replacement or refund your loss.
Bromothymol Blue is a sulfonated hydroxyquinone in acidic aqueous solutions. In alkaline solutions, this dye is present as a moderately sized dianion. It is also known as bromthymol blue and dibromothymolsulfonphthalein.
Bromothymol blue dye serves as a pH indicator because of the precise color transition at neutrality. Other applications include:
| Product Name: | Bromothymol Blue |
| CAS: | 76-59-5 |
| MF: | C27H28Br2O5S |
| MW: | 624.38 |
| EINECS: | 200-971-2 |
| Product Categories: | Sulfonephthalein;Organics;Analytical Chemistry;Indicator Solutions;Indicators;Titration;Indicator (pH);pH Indicators;AR |
| Mol File: | 76-59-5.mol |
| Bromothymol Blue Chemical Properties |
| Melting point | 200-202 °C (lit.) |
| density | 1.4668 (estimate) |
| Fp | 38 °C |
| storage temp. | Store at +5°C to +30°C. |
| solubility | Solubility Sparingly soluble in water |
| pka | 7.0, 7.1(at 25ºC) |
| form | Solid |
| Boiling point | 614.3±55.0 °C(Predicted) |
| color | Pink-brown to purple |
| Odor | Characteristic odour |
| PH | pH : 6.0~7.6 |
| PH Range | 6(yellow)-7.6(blue) |
| Water Solubility | slightly soluble |
| λmax | 420nm, 435nm, 620nm |
| Merck | 14,1445 |
| BRN | 373934 |
| Stability: | Stable. Incompatible with strong oxidizing agents. |
| Major Application | Sol-gel matrix, fuel cells, optical sensors, combustion gas detection system, paints, toys, cleaning products, detergents, textiles, food freshness sensor, identifying fresh and stale rice,wheat, detecting microorganisms, bacterial growth, psychoactive drug, dental materials |
| LogP | 8.600 (est) |
| CAS DataBase Reference | 76-59-5(CAS DataBase Reference) |
| EPA Substance Registry System | Bromothymol blue (76-59-5) |
| Safety Information |
| Hazard Codes | Xn |
| Risk Statements | 10-41-36/37/38-20/21/22 |
| Safety Statements | 24/25-39-26-36 |
| RIDADR | 1170 |
| WGK Germany | 3 |
| RTECS | SJ450000 |
| TSCA | Yes |
| HazardClass | 3 |
| PackingGroup | III |
| HS Code | 29349990 |
| Bromothymol Blue Usage And Synthesis |
| Description | Bromothymol blue is a pH indicator for weak acids and bases. In neutral solution, it appears bluish-green. At pH above 7.6 it appears blue, and at pH below 6.0 it appears yellow. Bromothymol blue (BTB) is an anionic dye. It can be protonated or deprotonated to generate yellow or blue. BTB helps to make ion-pair complex, that is used to identify several pharmaceutical compounds with the help of extractive spectrophotometric methods. |
| Chemical Properties | Pale purple crystalline powder |
| Uses | Bromothymol blue is a chemical indicator for weak acids and bases. |
| Uses | Bromothymol blue is mostly used in measuring substances that would have relatively low acidic or basic levels (near a neutral pH). It's often used in pools, fish tanks, or measuring the presence of carbonic acid in a liquid. Bromothymol Blue is a sulfonated hydroxyquinone in acidic solutions. In alkaline solutions, it is present as a dianion that is blue with a larger conjugated system than the yellow hydroxyquinone. Both forms are lipophilic. It is also known as bromthymol blue or dibromothymolsulfonphthalein. |
| Application | Bromothymol blue has various applications in biology and medicine. It is suitable for demonstrating fungal hyphae within plant roots. It is used as a vital stain to trace the movement of fluids from the lymph. It is added to an agar gel microbial culture medium for enumeration of Bacillus cereus. Bromothymol blue is also used as a pH indicator due to its precise color transition properties at neutrality. Suitable for use: In preparations of pH indicator solutions. In phospholipid staining on tissues and cells prepared on microscopy slides. |
| Definition | ChEBI: A member of the class of 2,1-benzoxathioles that is 2,1-benzoxathiole 1,1-dioxide in which both of the hydrogens at position 3 have been substituted by 3-bromo-4-hydroxy-5-isopropyl-2-methylphenyl groups. |
| Purification Methods | Dissolved the dye in aqueous 5% NaHCO3 solution and precipitate it from the hot solution by dropwise addition of aqueous HCl. Repeat this until the extinction at max 420nm does not increase. It is an indicator: aqueous solutions are yellow at pH 6.0, and blue at pH 7.6. [Beilstein 19/3 V 461.] |
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