Orange G, for microscopy

About Orange G, for microscopy

Orange G is a biological stain in Microscopy grade carrying the CAS registry number 1936-15-8. Its molecular formula is C16H10N2Na2O7S2 and its molecular weight is 452.4 g/mol. Its systematic (IUPAC) name is disodium, 7-hydroxy-8-phenyldiazenylnaphthalene-1,3-disulfonate. Alternative names: Acid Orange 10 and Wool Orange 2G.

It is supplied as a powder. Key physical data: a melting point of 141 °C. Keep the container tightly sealed and store it in a cool, dry area. Good laboratory practice and suitable PPE are recommended during handling.

It is commonly used for histology and cytology staining, microscopy, clinical laboratories and biological staining. Buyers come mainly from academic and industrial research, diagnostics and biotechnology and textiles and dyeing.

Standard pack sizes are 25 g, 100 g, 1 kg and 4 x 25 kg, and every batch ships with a Certificate of Analysis (COA) and we export worldwide.

Typical applications

Histology & cytology staining
Microscopy
Clinical laboratories
Biological staining

Industries

Specifications & identifiers

Chemical identifiers
Product name	Orange G, for microscopy
Catalogue No.	VQ-000671
CAS Number	1936-15-8
IUPAC name	disodium;7-hydroxy-8-phenyldiazenylnaphthalene-1,3-disulfonate
Molecular formula	C₁₆H₁₀N₂Na₂O₇S₂
Molecular weight	452.4 g/mol
Exact mass	451.9725
Grade	Microscopy
HSN code	32049000
InChIKey	HSXUHWZMNJHFRV-UHFFFAOYSA-L
SMILES	C1=CC=C(C=C1)N=NC2=C(C=CC3=CC(=CC(=C32)S(=O)(=O)[O-])S(=O)(=O)[O-])O.[Na+].[Na+]
PubChem CID	16015

Physical properties
Physical form	Powder
Appearance	Powder
Melting point	141 °C
H-bond donors / acceptors	1 / 9
TPSA	176 Å²
Synonyms	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, C.I. Acid Orange 10, C.I. Orange G, C.I. Food Orange 4, C.I. Acid Orange No. 10, Light Orange G, Orange G dye, Acid Orange G, C.I. Acid Orange 10, disodium salt

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Frequently asked questions

What is the CAS number of Orange G, for microscopy?

The CAS Registry Number of Orange G, for microscopy is 1936-15-8. It is also known as 1-Phenylazo-2-naphthol-6,8-disulfonic acid disodium salt, 7-Hydroxy-8-phenylazo-1,3-naphthalenedisulfonic acid disodium salt, Acid Orange 10.

What is the molecular formula and molecular weight of Orange G, for microscopy?

Orange G, for microscopy has the molecular formula C16H10N2Na2O7S2 and a molecular weight of 452.4 g/mol.

Which grade and pack sizes of Orange G, for microscopy can I order?

We supply Orange G, for microscopy in Microscopy grade, in 25 g, 100 g, 1 kg, 4 x 25 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Orange G, for microscopy?

Yes. Every lot of Orange G, for microscopy is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Orange G, for microscopy be shipped internationally?

Yes. We export Orange G, for microscopy worldwide by air and sea freight or express courier, on EXW, FOB, CIF, CFR or DAP Incoterms, with full export documentation.