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Thermo Scientific Chemicals Congo Red, Indicator grade
CAS: 573-58-0 | C32H22N6Na2O6S2 | 696.664 g/mol
Brand: Thermo Scientific Chemicals 110501000
1118.68 NOK valid until 2025-12-31
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Quantity | 100 g |
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Packaging | Glass bottle |
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Description
This Thermo Scientific Chemicals brand product was originally part of the Acros Organics product portfolio. Some documentation and label information may refer to the legacy brand. The original Acros Organics product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

Chemical Identifiers
573-58-0 | |
696.664 | |
IQFVPQOLBLOTPF-UHFFFAOYSA-L | |
11313 | |
disodium;4-amino-3-[[4-[4-[(1-amino-4-sulfonatonaphthalen-2-yl)diazenyl]phenyl]phenyl]diazenyl]naphthalene-1-sulfonate |
C32H22N6Na2O6S2 | |
MFCD00004028 | |
C.I. 22120, Direct Red 28 | |
CHEBI:34653 | |
C1=CC=C2C(=C1)C(=CC(=C2N)N=NC3=CC=C(C=C3)C4=CC=C(C=C4)N=NC5=C(C6=CC=CC=C6C(=C5)S(=O)(=O)[O-])N)S(=O)(=O)[O-].[Na+].[Na+] |
Specifications
>360.0°C | |
C32H22N6Na2O6S2 | |
C.I. 22120, Direct Red 28 | |
IQFVPQOLBLOTPF-UHFFFAOYSA-L | |
disodium;4-amino-3-[[4-[4-[(1-amino-4-sulfonatonaphthalen-2-yl)diazenyl]phenyl]phenyl]diazenyl]naphthalene-1-sulfonate | |
11313 | |
696.65 | |
Glass bottle | |
Congo Red |
573-58-0 | |
MFCD00004028 | |
Solubility in water: soluble. Other solubilities: soluble in ethanol, slightly soluble in acetone, practically insoluble in ether | |
C1=CC=C2C(=C1)C(=CC(=C2N)N=NC3=CC=C(C=C3)C4=CC=C(C=C4)N=NC5=C(C6=CC=CC=C6C(=C5)S(=O)(=O)[O-])N)S(=O)(=O)[O-].[Na+].[Na+] | |
696.664 | |
CHEBI:34653 | |
Indicator | |
100 g |
Safety and Handling
- Congo red
Signal Word
- Danger
Hazard Category
- Carcinogenicity Category 1B
- Reproductive toxicity Category 2
Hazard Statement
- H361d-Suspected of damaging the unborn child.
- H350-May cause cancer.
Precautionary Statement
- P201-Obtain special instructions before use.
- P233-Keep container tightly closed.
- P280-Wear protective gloves/protective clothing/eye protection/face protection.
- P308+P313-IF exposed or concerned: Get medical advice/attention.
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