Amido Black 10B C.I. 20470 (Napthol Blue Black)


Amido black 10B is an amino acid staining diazo dye used in biochemical research to stain for total protein on transferred membrane blots. It is also used in criminal investigations to detect blood present with latent fingerprints.

  • Protein Staining
  • Biological Staining

Dye Content: >80%

C.I. 20470

Molecular Formula: C22H14N6Na2O9S2
Molecular Weight: 616.49 g/mol
Lambda Max ABS in Water: 616nm
Absporptivity A 1%,1cm,Lamda Max: 633
Ratio Lambda Max,P -/+15nm: 1.09
Loss on drying (@35 deg C): 9.8%

Hazard Phrases: Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation.

Prec Phrases: Avoid breathing dust/fume/gas/mist/vapours/spray. Wear protective gloves/protective clothing/eye protection/face protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing.

Cas No: 1064-48-8
Einecs No: 213-903-1

HS CODE: 32041200


Following the UK’s departure from the EU on 1 January 2021, all European shipments are sent on a DAP Basis (Delivered at Place).

This means that the buyer will be liable for import VAT at their prevailing national rate and for orders over 150€ (including carriage) import duties will become chargeable at your prevailing national rate.

The Duty is ascertained by your national customs authority based on the HS Code of each product. The HS Code is shown in the “European Shipment” section of each product page.


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