Company Informations
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".
We can provide customers with customized processing, research and development services;
We can develop high-end Pharmaceutical and chemical products with high technical difficulties,high barriers and unique production processes;
We can provide 100 grams Grade, kilograms, and hundred kilograms of raw material pharmaceutical intermediates and other products.
We can perform -100°C to 300°C reaction.
R&D strength is the company's core competitiveness.Yunbangpharm has maintains a good cooperation relationship with many Universities and Research institutes locally, which can quickly transform R&D results into industrial production.
Our goal : To achieve the integrated upgrade of Pharmaceutical intermediates, raw materials and high-end chemical products, adhere to "serving pharmaceutical companies, creating our brands" to provide customers with high-quality and low-cost pharmaceutical and chemical products, realizing Win-win cooperation and common development.
Application
Refer to the product′s Certificate of Analysis for more information on a suitable instrument technique. Contact Technical Service for further support.
FAQ
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.
Product analysis
| Product Name: |
Congo Red |
| CAS: |
573-58-0 |
| MF: |
C32H22N6Na2O6S2 |
| MW: |
696.66 |
| EINECS: |
209-358-4 |
| Product Categories: |
Azo;Dyes and Pigments;Organics;Analytical Chemistry;Indicator (pH);pH Indicators |
| Mol File: |
573-58-0.mol |
| Melting point |
>360 °C (lit.) |
| density |
0.995 g/mL at 25 °C |
| vapor pressure |
<1 Pa |
| storage temp. |
Store at +5°C to +30°C. |
| solubility |
H2O: soluble10mg/mL |
| pka |
4.1(at 25ºC) |
| Colour Index |
22120 |
| form |
Powder/Solid |
| color |
Red Brown |
| PH |
6.7 (10g/l, H2O, 20ºC) |
| PH Range |
3(blue)-5.2(red) |
| Odor |
Odorless |
| Water Solubility |
soluble |
| λmax |
497nm, 488nm, 595nm |
| Merck |
14,2498 |
| BRN |
3894858 |
| Stability: |
Stable. Incompatible with strong oxidizing agents. |
| Biological Applications |
Detecting bacteria,protein folding disorders; treating dermatological disorders,neurodegenerative diseases,Alzheimer's disease |
| Major Application |
Waveguides, optical sensors, display devices, inks, fertilizer, pesticides, carbohydrates, treatment of pathogen infections, age-related macular degeneration |
| CAS DataBase Reference |
573-58-0(CAS DataBase Reference) |
| EPA Substance Registry System |
Congo Red (573-58-0) |
| Hazard Codes |
T,Xi |
| Risk Statements |
45-63-36 |
| Safety Statements |
53-45-37/39-26 |
| WGK Germany |
3 |
| RTECS |
QK1400000 |
| TSCA |
Yes |
| HS Code |
29215900 |
| Hazardous Substances Data |
573-58-0(Hazardous Substances Data) |
| Toxicity |
LD50 i.v. in rats: 190 mg/kg (Richardson, Dillon) |
| Chemical Properties |
brown-red powder |
| Chemical Properties |
C.I. Direct red 28(Congo Red) is an odorless, brownish-red powder. |
| Uses |
Dye, medicine (diagnostic aid), indicator, biological stain. |
| Uses |
Congo red is useful for staining and visual detection of amyloid deposits. It inhibits the accumulation of the scrapie-associated, protease-resistant isoform of protein PrP without affecting the metabolism of the normal isoform. |
| Uses |
- Congo red has been used as a histochemical stain for the quantification of amyloid deposits in brain tissues.
- It has been used as a cell wall inhibiting agent in fungus Cryptococcus neoformans.
- It has also been used to study microstructural details in the cell walls of raw potato and fried potato using confocal microscopy.
|
| Definition |
ChEBI: An indicator dye that is blue-violet at pH 3.0 and red at pH 5.0. |
| Biochem/physiol Actions |
Congo red is a benzidine-based anionic diazo dye. It is a histological dye which binds to many amyloid proteins and is used for the quantification of amyloid β-peptide aggregation. Congo red also interacts with β-D-glucans, polysaccharides containing continuous β-(1→4)-linked D-glucopyranosyl units and some hemicellulosic galactoglucomannans. |
| Safety Profile |
Human poison by ingestion with cardovascular effects. Experimental poison by intravenous route. An experimental teratogen. Experimental reproductive effects. An eye irritant. Mutation data reported. When heated to decomposition it emits very toxic fumes of NOx, SOx, and Na2O |
| Potential Exposure |
It is used as an indicator dye, a biological stain; a diagnostic aid in medicine; and a dye for fabric and paper. |
| storage |
Room temperature |
| Shipping |
UN3143 Dyes, solid, toxic, n.o.s. or Dye intermediates, solid, toxic, n.o.s., Hazard Class: 6.1; Labels: 6.1-Poisonous materials, Technical Name Required |
| Properties and Applications |
| Standard |
Acid Resistance |
Alkali Resistance |
Light Fastness |
Soaping |
Water |
| Fading |
Stain |
Fading |
Stain |
| ISO |
1 |
3 |
1 |
2 |
|
2 |
|
| AATCC |
1 |
3 |
2 |
1 |
|
3
|
|
|
| Purification Methods |
Crystallise the dye from aqueous EtOH (1:3). Dry it in air. [Beilstein 6 I 342.] |
| Incompatibilities |
Contact with oxidizers may cause fire and explosion hazard. Incompatible with strong acids; reducing agents. |
| |
| Congo Red Preparation Products And Raw materials |
| Raw materials |
Sodium sulfate-->Sulfonated castor oil-->Benzidine-->Naphthionic acid-->Benzidine-->Naphthionic acid |
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