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861286

Sigma-Aldrich

Orange G

certified by the BSC, Dye content 80 %

Synonym(s):

1-Phenylazo-2-naphthol-6,8-disulfonic acid disodium salt, 7-Hydroxy-8-phenylazo-1,3-naphthalenedisulfonic acid disodium salt, Acid Orange 10, Wool Orange 2G

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About This Item

Empirical Formula (Hill Notation):
C16H10N2Na2O7S2
CAS Number:
1936-15-8
Molecular Weight:
452.37
Colour Index Number:
16230
Beilstein/REAXYS Number:
4120705
EC Number:
217-705-6
MDL number:
MFCD00012457
UNSPSC Code:
12171500
PubChem Substance ID:
329769438
NACRES:
NA.47

agency

certified by the BSC

Quality Level

200

form

powder

composition

Dye content, 80%

technique(s)

microbe id | staining: suitable

color

orange to very dark orange, and Red to Very Dark Red and Orange-Red and Red-Orange and Dark Red-Orange

solubility

H2O: 1 mg/mL

λmax

475 nm

ε (extinction coefficient)

≥10000 at 329-331 nm in H2O
≥17000 at 473-479 nm in H2O
≥20500 at 246-250 nm in H2O

application(s)

diagnostic assay manufacturing
hematology
histology

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Application

Collagen stain for connective tissue. Used with Orcein, Alizarin Blue 2B, and Fast Green FCF in Kornhauser′s quadruple stain for most elementary structures of tissues.

Biochem/physiol Actions

Orange G is used in collagen stain for connective tissue. It is used with Orcein, Alizarin Blue 2B, and Fast Green FCF in Kornhauser′s quadruple stain for most elementary structures of tissues. It is also used along with acid fuchsin and light green in masson trichrome stain for the staining of cellular structures, red blood cells and muscle cells.

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

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Certificates of Analysis (COA)

Lot/Batch Number
0000349016
0000349016
SHBQ8541
SHBQ2201
SHBQ2200

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Kierszenbaum AL and Tres L
Histology and Cell Biology: An Introduction to Pathology (2015)
Arumugam Sivasamy et al.
Current microbiology, 62(2), 351-357 (2010-07-21)
Biosorption is an eco-friendly and cost-effective method for treating the dye house effluents. Aspergillus niger and Trichoderma sp. were cultivated in bulk and biomasses used as biosorbents for the biosorption of an azo dye Orange G. Batch biosorption studies were
M Arulkumar et al.
Journal of hazardous materials, 186(1), 827-834 (2011-01-15)
Thespesia populnea is a large tree found in the tropical regions and coastal forests of India. Its pods were used as a raw material for the preparation of activated carbon. The prepared activated carbon was used for the adsorptive removal
G Thennarasu et al.
Environmental science and pollution research international, 19(7), 2755-2765 (2012-02-23)
The photocatalytic degradation of Orange G (OG) dye has been investigated using synthesised nanocrystalline ZnO as a photocatalyst and sunlight as the irradiation source. The formation of ZnO prepared from its precursor was confirmed through FT-IR and powder X-ray diffraction
Honghai Wu et al.
Environmental technology, 33(13-15), 1545-1552 (2012-09-20)
Decolourization of the azo dye Orange G (OG) was investigated by using goethite/H2O2 as a heterogeneous Fenton-like reagent. Five principle operational parameters, namely pH, ion strength, concentrations ofgoethite (alpha-FeOOH) and hydrogen peroxide (H2O2), and reaction temperature, were taken into account
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