O7252

Orange G

certified by the Biological Stain Commission

• 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
• Empirical Formula (Hill Notation): C₁₆H₁₀N₂Na₂O₇S₂
• CAS Number: 1936-15-8
• Molecular Weight: 452.37
• Colour Index Number: 16230
• Beilstein: 4120705
• EC Number: 217-705-6
• MDL number: MFCD00012457
• UNSPSC Code: 12171500
• PubChem Substance ID: 24897871
• NACRES: NA.47

Properties

• grade: certified by the Biological Stain Commission
• Quality Level: 200
• form: powder
• composition: Dye content, ≥80%
• color: orange to very dark orange
• solubility: water: 1 mg/mL, clear
• application(s): diagnostic assay manufacturing; hematology; histology
• storage temp.: room temp
• SMILES string: [Na+].[Na+].Oc1ccc2cc(cc(c2c1\N=N\c3ccccc3)S([O-])(=O)=O)S([O-])(=O)=O
• 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+;;
• InChI key: HSXUHWZMNJHFRV-QIKYXUGXSA-L

Description

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.

Application

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.

Suitability

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.

Safety Information

• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 3
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves