Congo Red
Congo Red
- CAS:
- 573-58-0
- MF:
- C32H22N6Na2O6S2
- MW:
- 696.66
Suppliers by country/region
Company Type
Properties
- 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
- form
- Powder/Solid
- Colour Index
- 22120
- pka
- 4.1(at 25℃)
- color
- Red Brown
- PH Range
- 3(blue)-5.2(red)
- PH
- 6.7 (10g/l, H2O, 20℃)
- 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
Safety Information
- Symbol(GHS)
GHS08
- Signal word
- Danger
- Hazard statements
- H350-H361d
- Precautionary statements
- P201-P202-P280-P308+P313-P405-P501
- 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
- Toxicity
- LD50 i.v. in rats: 190 mg/kg (Richardson, Dillon)
Use
Congo red is aniline dye or coal tar dyes, and it has many types with very wide application. Its drawback is easy to fade by sunlight; aniline blue, bright green, methyl green are more easily fade. Be careful to handle the pH, and avoid direct sunlight when flaking, thus it will keep a few years without fading. Congo red is an acid dye, a purplish red powder. It is soluble in water and alcohol, turning blue when in acid. It can be used as a dye as well as an indicator. In the production of plant slide, it is often used as a liner agent for hematoxylin or other cell dyes. When used in cytoplasm dyes, it can dye the cytosol or fibrin red. In the process of tissue slicing, it is used to dye nerve axis, elastic fibers, embryonic materials, etc. In addition, Congo red can be used for double staining with hematoxylin; it can also be used for amyloid staining. For it is soluble in water and alcohol, so washing and dehydration treatment should be quick.
46 India supplier list of "Congo Red"
- Product Name:Congo Red solution
- Products Intro:Purity: 99% | Package: 1 kg,5 kg, 10 kg,25kg and 1 MT
- Company Type: Trader
- Country/Region: Gujarat,INDIA
- Product Name:Direct red 28
- Products Intro:Purity: 98% | Package: 1 kg,5 kg, 10 kg,25kg and 1 MT
- Company Type: Trader
- Country/Region: Hyderabad,INDIA
- Product Name:Congo Red 75%
- Products Intro:Purity: 75% | Package: 1 kg,5 kg, 10 kg,25kg and 1 MT
- Company Type: Reagent
- Country/Region: Maharashtra,INDIA
- Product Name:CONGO RED INDICATOR C.I. NO. 22120 FOR MICROSCOPY
- Products Intro:Purity: AR,ACS | Package: 100GM;25GM
- Company Type: Reagent
- Country/Region: Maharashtra,INDIA
- Product Name:Direct red 28
- Products Intro:Purity: 99% | Package: 1 kg,5 kg, 10 kg,25kg and 1 MT
- Company Type: Manufacturer
- Country/Region: Gujarat,INDIA
- Product Name:Direct red 28
- Products Intro:Purity: 99% | Package: 1 kg,5 kg, 10 kg,25kg and 1 MT
- Company Type: Manufacturer
- Country/Region: Gujarat,INDIA
- Product Name:Direct red 28
- Products Intro:Purity: 98% | Package: 1 kg,5 kg, 10 kg,25kg and 1 MT
- Company Type: Reagent
- Country/Region: Maharashtra,INDIA
- Product Name:Congo Red 75 %
- Products Intro:Purity: 98% | Package: 1 kg,5 kg, 10 kg,25kg and 1 MT
- Company Type: Trader
- Country/Region: Pune,INDIA
- Product Name:Direct red 28
- Products Intro:Purity: 98% | Package: 1 kg,5 kg, 10 kg,25kg and 1 MT
- Company Type: Reagent
- Country/Region: Gujarat,INDIA
- Product Name:CONGO RED 75%
- Products Intro:Purity: 99% | Package: 1 kg,5 kg, 10 kg,25kg and 1 MT
- Company Type: Manufacturer
- Country/Region: Maharashtra,INDIA