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  3. Direct Red 81

Direct Red 81 is a diazo dye with a very high water solubility. The dye adsorption efficiency of Direct Red 81 is increased by increasing the adsorbent dose and adsorption time.

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Direct Red 81 Chemical Structure

Direct Red 81 Chemical Structure

CAS No. : 2610-11-9

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Description

Direct Red 81 is a diazo dye with a very high water solubility. The dye adsorption efficiency of Direct Red 81 is increased by increasing the adsorbent dose and adsorption time[1].

Molecular Weight

675.60

Formula

C29H19N5Na2O8S2

CAS No.
SMILES

OC(C(C=C1)=C(C=C1NC(C2=CC=CC=C2)=O)C=C3[S](=O)(O[Na])=O)=C3/N=N/C(C=C4)=CC=C4N=NC(C=C5)=CC=C5[S](=O)(O[Na])=O

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Room temperature in continental US; may vary elsewhere.

Storage

Please store the product under the recommended conditions in the Certificate of Analysis.

Purity & Documentation
References
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Direct Red 81 Related Classifications

  • Molarity Calculator

  • Dilution Calculator

The molarity calculator equation

Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)

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The dilution calculator equation

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
× = ×
C1   V1   C2   V2
Help & FAQs
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    Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

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Product Name:
Direct Red 81
Cat. No.:
HY-D0334
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