C6767
Congo Red
Dye content ≥35 %, Powder
Synonym(s):
Congo Red 4B, Cosmos Red, Cotton Red B, Cotton Red C, Direct Red 28, Direct Red R, Direct Red Y
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About This Item
Recommended Products
Product Name
Congo Red, Dye content ≥35 %
form
powder
composition
Dye content, ≥35%
technique(s)
titration: suitable
color
red-brown
pH
6.7 (10 g/L)
mp
>360 °C (lit.)
solubility
H2O: 1 mg/mL
application(s)
diagnostic assay manufacturing
hematology
histology
storage temp.
room temp
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This Item | C6277 | 201618 | R4127 |
|---|---|---|---|
| color red-brown | color - | color - | color - |
| application(s) diagnostic assay manufacturing | application(s) diagnostic assay manufacturing | application(s) diagnostic assay manufacturing | application(s) diagnostic assay manufacturing |
| form powder | form powder | form powder | form powder |
| solubility H2O: 1 mg/mL | solubility H2O: 10 mg/mL | solubility acetone: 10 mg/mL | solubility H2O: 1 mg/mL (Red to Very Dark Red) |
| Quality Level 200 | Quality Level 200 | Quality Level 200 | Quality Level 200 |
Application
- Congo red has been used as a histochemical stain for the quantification of amyloid deposits in brain tissues.[1]
- It has been used as a cell wall inhibiting agent in fungus Cryptococcus neoformans.[2]
- It has also been used to study microstructural details in the cell walls of raw potato and fried potato using confocal microscopy.[3]
Biochem/physiol Actions
Signal Word
Danger
Hazard Statements
Precautionary Statements
Hazard Classifications
Carc. 1B - Repr. 2
Storage Class Code
6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects
WGK
WGK 3
Personal Protective Equipment
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What is the Department of Transportation shipping information for this product?
Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product.
Why does the SDS for Congo Red list carcinogen as an OSHA hazard, (Section 2) but in Section 11 on carcinogenicity, it states that there is no component identified as a carcinogen?
The reason that there is not an OSHA listing for carcinogens on most of SDS that have a hazard of a carcinogen hazard is because that section of the SDS is specifically for the OSHA regulated carcinogens, also referred to as the OSHA 13. Congo red at this time is not specifically called out as a carcinogen by the other 3 Organizations listed (IARC, NTP, ACGIH) either. Congo red is listed by the European Classification Labeling & Packaging (CLP) Regulation (which is a pretty definitive guide for hazard classification), as a carcinogen. No other organizations have had the time to classify this material at this time. This is why it is only listed as a carcinogen in section 2 and in section 15.
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