| Identification | Back Directory | [Name]
ORCEIN | [CAS]
1400-62-0 | [Synonyms]
ORCEIN
PAcein
Orcein
NATURAL RED 28
ORCEIN, NATURAL
ORCEIN STAINING
ORCEIN SYNTHETIC
Moss red pigMent
Orceinforanalysis
C.i. Natural Red 28
Orcein(NaturalRed28)
Orcein,pure,certified
ORCEIN, FOR MICROSCOPY
Orcein(CiNaturalRed28)
Orcein, certified, pure
Orcein Biological Stain
Orcein, certified, pure 5GR
ORCEIN, SYNTHETIC, CERTIFIED
Orcein, solution A, for microscopy
Orcein, solution B, for microscopy
Trifloxysulfuron Sodium Salt, Pestanal | [EINECS(EC#)]
215-750-6 | [Molecular Formula]
C28 H24 N2 O7 | [MDL Number]
MFCD00062310 | [MOL File]
1400-62-0.mol | [Molecular Weight]
500.51 |
| Chemical Properties | Back Directory | [Appearance]
dark brown crystals or powder | [Boiling point ]
591.36°C (rough estimate) | [bulk density]
900-1000kg/m3 | [density ]
1.3224 (rough estimate) | [refractive index ]
1.5800 (estimate) | [storage temp. ]
Store at RT. | [solubility ]
Insoluble in water, benzene, chloroform,
ether; soluble in ethanol, acetone, acetic acid; soluble in
aqueous alkali | [form ]
Powder | [pka]
4.0, 6.9, 13.4(at 25℃) | [color ]
Dark brown to brown-black | [Stability:]
Stable. | [biological source]
synthetic | [Water Solubility ]
Soluble in acetone, alcohol, acetic acid (red color), and dilute aqueous alkali (blue-violet color). Insoluble in water. | [λmax]
575 nm | [Merck ]
14,6863 | [Biological Applications]
Diagnosis of liver biopsy; detecting Candida,hepatitis B surface antigen in fixed tissues,histamines,HBsAg in liver cell,microorganisms | [EPA Substance Registry System]
Orcein (1400-62-0) |
| Hazard Information | Back Directory | [Chemical Properties]
dark brown crystals or powder | [Definition]
ChEBI: A member of the class of benzofurans that is dibenzo[b,d]furan-3,7-dione bearing two methyl substituents at positions 1 and 9 as well as two 2,4-dihydroxy-6-methylanilino substituents at positions 2 and 8. | [Uses]
Biological stain. | [General Description]
Orcein is a weakly acidic orange-red fluorochrome and is mainly required for the staining of elastic tissue. It is not specific for chromatin staining, however, in acidic solutions it works as a basic dye and stains basophilic chromosomes purple red. |
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