| Customization: | Available |
|---|---|
| CAS No.: | 115-40-2 |
| Formula: | C21h16br2o5s |
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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.
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.
1. 90days quality guarantee for exchange.
2. For each batch order extracts, we will attach a factory Inspection Report with the goods delivery , including the BatchNo/ Date/ Test index ects; also will keep the archived extracts to ensure received by customers are the same each time.
3. Our team of experienced professionals are available online 24 hours a day to answer any questions and provide guidance on product usage and maintenance.
| Product Name: | Bromocresol Purple |
| Synonyms: | 4,4'-(3h-2,1-benzoxathiol-3-ylidene)s,s-dioxide;4,4'-(3h-2,1-benzoxathiol-3-ylidene)bis(2-bromo-6-o-cresol)s,s-dioxide;4,4'-(3H-2,1-Benzoxathiol-3-ylidene)bis[2-bromo-b-methylphend]S,S-dioxide;Bromocresol purple indicator solution (for microbial limit check);3',3''-DIBROMO-O-CRESOLSULFONPHTHALEIN;Bromocresol Purple, indicator grade, pure;Phe nol, 4,4-(1,1-dioxido-3H-2,1-benzoxathiol-3-ylidene)bis2-bromo-6-methyl-;BCP |
| CAS: | 115-40-2 |
| MF: | C21H16Br2O5S |
| MW: | 540.22 |
| EINECS: | 204-087-8 |
| Product Categories: | Sulfonephthalein;Organics;Analytical Chemistry;Indicator (pH);pH Indicators;Stains and Dyes |
| Mol File: | 115-40-2.mol |
| Bromocresol Purple Chemical Properties |
| Melting point | 240 °C (dec.) (lit.) |
| density | 1.6509 (estimate) |
| Fp | 36 °C |
| storage temp. | Store at +5°C to +30°C. |
| solubility | ethanol: soluble1mg/mL |
| form | Solid |
| pka | 6.21, 6.3, 6.4(at 25ºC) |
| Boiling point | 590.2±50.0 °C(Predicted) |
| color | Purplish-brown |
| PH Range | 5.2(yellow)-6.8(purple) |
| PH | pH : 5.2~6.8 |
| Water Solubility | practically insoluble |
| λmax | 419nm, 433nm, 591nm |
| Merck | 14,1387 |
| BRN | 359618 |
| Stability: | Stable. Incompatible with strong oxidizing agents. |
| Major Application | Waveguides, fuel cells, sensors, sol-gel technology, display device, falsification-proof security paper, paints, detergents, identifying fresh and stale rice, detecting lactic acid bacteria, dental materials, vaginal infection test method |
| InChIKey | ABIUHPWEYMSGSR-UHFFFAOYSA-N |
| CAS DataBase Reference | 115-40-2(CAS DataBase Reference) |
| EPA Substance Registry System | Bromcresol Purple (115-40-2) |
| Safety Information |
| Hazard Codes | Xi,Xn |
| Risk Statements | 36/37/38-10-20/21/22 |
| Safety Statements | 26-36-37/39-16 |
| RIDADR | UN 1993 3/PG 3 |
| WGK Germany | 3 |
| TSCA | Yes |
| HS Code | 29349990 |
| Hazardous Substances Data | 115-40-2(Hazardous Substances Data) |
| MSDS Information |
| Provider | Language |
|---|---|
| Bromocresol Purple | English |
| SigmaAldrich | English |
| ACROS | English |
| ALFA | English |
| Bromocresol Purple Usage And Synthesis |
| Chemical Properties | Crystalline |
| Uses | As indicator, pH 5.2 yellow; pH 6.8 purple. |
| Uses | It is used as a pH indicator and to measure serum albumin concentrations. It is used as a pH indicator (5.2-6.8 : yellow to blue-purple) and also used in spectrophotometric determination of serum-albumin. |
| Uses | Bromocresol purple has been used as a pH indicator in the yeast culture media. It has been used as a pH indicator in the culture media of Geobacillus stearothermophilus subsp. Calidolactis. |
| 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-methylphenyl groups. A hydrophilic dye that is used as a pH indicator and to measure serum albumin concentrations. |
| General Description | Bromocresol purple is a pH indicator, which changes color from yellow (at low pH 5.2) to violet (above pH 6.8). It aids in determining the dead cell count for cells with plasma membrane damage. Bromocresol purple is widely used as a fluorescent stain in yeast cells. Cells with an intact plasma membrane are not stained, while damaged cells are seen as blue-grey ghosts. |
| Biochem/physiol Actions | Bromocresol purple is a pH indicator which changes color from yellow (at low pH 5.2) to violet (above pH 6.8). It is mainly used as a fluorescent stain in yeast cells. It helps in dead cell count for cells with plasma membrane damage. Cells with proper cell membrane are not stained, while damaged cells are seen as blue-grey ghosts. |
| Purification Methods | Dissolve the dye in aqueous 5% NaHCO3 solution and precipitate it from a hot solution by dropwise addition of aqueous HCl. Repeat this until the UV/VIS-extinction did not increase at 419nm. It can also be recrystallised from *benzene. It is an indicator: at pH 5.2 (yellow) and pH 6.8 (purple). [Beilstein 19/3 V 460.] |
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