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Merck
CN

O7252

Orange G

Dye content, ≥80%, certified by the Biological Stain Commission, powder

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
UNSPSC Code:
12171500
NACRES:
NA.47
PubChem Substance ID:
24897871
EC Number:
217-705-6
MDL number:
MFCD00012457
Colour Index Number:
16230
Beilstein/REAXYS Number:
4120705

Key Documents

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Product Name

Orange G, certified by the BSC

InChI key

HSXUHWZMNJHFRV-QIKYXUGXSA-L

InChI

1S/C16H12N2O7S2.2Na/c19-13-7-6-10-8-12(26(20,21)22)9-14(27(23,24)25)15(10)16(13)18-17-11-4-2-1-3-5-11;;/h1-9,19H,(H,20,21,22)(H,23,24,25);;/q;2*+1/p-2/b18-17+;;

SMILES string

[Na+].[Na+].Oc1ccc2cc(cc(c2c1\N=N\c3ccccc3)S([O-])(=O)=O)S([O-])(=O)=O

agency

certified by the BSC

form

powder

composition

Dye content, ≥80%

technique(s)

microbe id | staining: suitable

color

orange to very dark orange

solubility

water: 1 mg/mL, clear

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

Quality Level

200

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Related Categories

Application

Certified for use in Mallory′s connective tissue stain; Wilson-Ezrin method for pituitary acidophils; Kreyberg′s method for keratin and mucus; as a counterstain following Heidenhain′s iron hematoxylin on paraffin sections; Flemming′s triple stain on paraffin sections of onion root.
Orange G is typically used as a background or cytoplasmic stain for various biological samples including a common application within clincial cytology within Papanicolaou varients.

General description

Orange G (C.l. 16230) is the disodium salt of benzeneazo-2-naphthol-6,8-disulfonic acid, C16H10N2O7S2Na2. Orange G, also known as wool orange 2G, is a component in several industry applications including cytology, histology, biology, and industrial staining. It is a component of Mallory′s connective tissue stain.

Storage Class

11 - Combustible Solids

wgk

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
SHBT1737
0000456271
0000456271
SHBS5179
0000346595

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Integrity of chromatin and replicating DNA in nuclei released from fission yeast by semi-automated grinding in liquid nitrogen.
Givens RM
BMC Research Notes, 4, 499-499 (2011)
Asli Yuksel et al.
Journal of hazardous materials, 190(1-3), 1058-1062 (2011-03-29)
Complete degradation of azo dye Orange G was studied using a 500 mL continuous flow reactor made of SUS 316 stainless steel. In this system, a titanium reactor wall acted as a cathode and a titanium plate-type electrode was used
Jianfeng Ma et al.
Journal of hazardous materials, 186(2-3), 1758-1765 (2011-01-14)
Organobentonite is suggested as potential super-sorbents for the removal of dyes from wastewater. All kinds of organobentonites are synthesized to adsorb dyes; however, the mechanism of the adsorption is still unclear. In this paper, organobentonites were first modified with hexadecyltrimethylammonium
Suneet Khandelwal et al.
International journal of oral science, 2(1), 45-52 (2010-08-10)
To analyse the cytomorphological features of keratinocytes in smears obtained from the oral mucosa of tobacco users and from oral squamous cell carcinoma lesions. Oral smears were obtained from clinically, normal appearing mucosa of oral squamous cell carcinoma patients (n=20)
A R Khataee et al.
Journal of hazardous materials, 168(1), 451-457 (2009-03-13)
In order to discuss the effect of chemical structure on photocatalysis efficiency, the photocatalytic degradation of three commercial textile dyes (C.I. Acid Orange 10 (AO10), C.I. Acid Orange 12 (AO12) and C.I. Acid Orange 8 (AO8)) with different structure and
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