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HomeProduct name listORCEIN

ORCEIN

Synonym(s):Natural Red 28

  • CAS NO.:1400-62-0
  • Empirical Formula: C28H24N2O7
  • Molecular Weight: 500.49936
  • MDL number: MFCD00062310
  • EINECS: 215-750-6
  • Update Date: 2023-04-23 13:52:06
ORCEIN Structural

What is ORCEIN?

Chemical properties

dark brown crystals or powder

The Uses of ORCEIN

Orcein (cas# 1400-62-0) is an organic dye and histochemical stain. Orcein has also been used as a stain for extracellular matrices. Dyes and metabolites.

The Uses of ORCEIN

Biological stain.

What are the applications of Application

Orcein (Synthetic) is a useful microscopy dye for flagella stains

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.

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.

Properties of ORCEIN

Boiling point: 591.36°C (rough estimate)
Density  1.3224 (rough estimate)
refractive index  1.5800 (estimate)
storage temp.  room temp
solubility  Insoluble in water, benzene, chloroform, ether; soluble in ethanol, acetone, acetic acid; soluble in aqueous alkali
pka 4.0, 6.9, 13.4(at 25℃)
form  Powder
color  Dark brown to brown-black
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
Stability: Stable.
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)

Safety information for ORCEIN

Signal word Warning
Pictogram(s)
ghs
Exclamation Mark
Irritant
GHS07
GHS Hazard Statements H302:Acute toxicity,oral
H315:Skin corrosion/irritation
H319:Serious eye damage/eye irritation
Precautionary Statement Codes P264:Wash hands thoroughly after handling.
P264:Wash skin thouroughly after handling.
P270:Do not eat, drink or smoke when using this product.
P280:Wear protective gloves/protective clothing/eye protection/face protection.
P330:Rinse mouth.

Computed Descriptors for ORCEIN

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