hexasodium 7,7'-(carbonyldiimino)bis[4-hydroxy-3-[[2-sulphonato-4-[(4-sulphonatophenyl)azo]phenyl]azo]naphthalene-2-sulphonate]

Names

[ Name ]:
hexasodium 7,7'-(carbonyldiimino)bis[4-hydroxy-3-[[2-sulphonato-4-[(4-sulphonatophenyl)azo]phenyl]azo]naphthalene-2-sulphonate]

[Synonym ]:
Duaazol Red B
MFCD00054389
picrosiriusred
Direct Fast Red F3B
C.I. direct red 80
Fast Red BA
SIRIUS RED F3B
Solophenyl red 3BL
Direct Red F3B
SIRIUS RED F3BA
SIRIUS RED
EINECS 220-027-3

Biological Activity

[Description]:

Direct Red 80 (Sirius Red) is a polyazo dye used principally in staining methods for collagen and amyloid. Direct Red 80 does not release benzidine upon degradation and is safer than many traditional direct dyes[1].

[Related Catalog]:

Research Areas >> Others

Signaling Pathways >> Others >> Others

[In Vitro]

Direct Red 80 (Sirius Red) has two important uses in histopathology: staining collagen from solution in saturated aqueous picric acid and staining amyloid from an alkaline solution. Stained structures are red[1]. Confocal laser microscopy (CLM) is also used to evaluate collagen production and distribution after Direct Red 80 staining. Direct Red 80 is not specific for the different types of collagen. Samples are washed in dH2O, pretreats for 40 min with a solution of 0.2% phosphomolybdic acid (PMA) and incubates for 30 min in a solution consisting of 0.1% Direct red 80 diluted in saturated aqueous picric acid. Finally each sample is washed in 0.01 M HCl for 2 min. PMA is used to make colourless cytoplasm and HCl is used to remove non-specific staining[1].

[References]

[1]. Dapson RW, et al. Certification procedures for sirius red F3B (CI 35780, Direct red 80). Biotech Histochem. 2011;86(3):133-139.

Chemical & Physical Properties

[ Density]:
1.85 g/cm3

[ Molecular Formula ]:
C₄₅H₂₆N₁₀Na₆O₂₁S₆

[ Molecular Weight ]:
1373.07000

[ Exact Mass ]:
1371.90000

[ PSA ]:
573.95000

[ LogP ]:
14.76520

MSDS

Click to get detail MSDS

Safety Information

[ Personal Protective Equipment ]:
Eyeshields;Gloves;type N95 (US);type P1 (EN143) respirator filter

[ Hazard Codes ]:
Xn

[ Safety Phrases ]:
22-24/25

[ RIDADR ]:
NONH for all modes of transport

[ WGK Germany ]:
3

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