Oil red EGN

Name: Oil red EGN
Brand: Vaqora Chemicals
SKU: VQ-000666

About Oil red EGN

Oil red EGN is a biological stain carrying the CAS registry number 4477-79-6. With the molecular formula C25H22N4O, it has a molar mass of 394.5 g/mol. The IUPAC name is 1-[[2,5-dimethyl-4-[(2-methylphenyl)diazenyl]phenyl]diazenyl]naphthalen-2-ol. Common synonyms include Solvent Red 26 and C.I. Solvent Red 26.

The material typically appears as a red powder. Literature values give a melting point of 165-170 °C. Keep the container tightly sealed and store it in a cool, dry area. Under GHS it is labelled “Warning”, so handle it with suitable PPE and consult the SDS.

Typical applications include histology and cytology staining, microscopy, clinical laboratories and organic synthesis. Our customers for this product work in academic and industrial research, diagnostics and biotechnology and textiles and dyeing.

Vaqora Chemicals supplies Oil red EGN in 25 g, 100 g, 5 x 1 kg and C packs, each shipped with a Certificate of Analysis (COA), and exports worldwide.

Typical applications

Histology & cytology staining
Microscopy
Clinical laboratories
Organic synthesis

Industries

Specifications & identifiers

Chemical identifiers
Product name	Oil red EGN
Catalogue No.	VQ-000666
CAS Number	4477-79-6
IUPAC name	1-[[2,5-dimethyl-4-[(2-methylphenyl)diazenyl]phenyl]diazenyl]naphthalen-2-ol
Molecular formula	C₂₅H₂₂N₄O
Molecular weight	394.5 g/mol
Exact mass	394.1794
HSN code	32049000
InChIKey	NRBKWAQSLYBVSG-UHFFFAOYSA-N
SMILES	CC1=CC=CC=C1N=NC2=C(C=C(C(=C2)C)N=NC3=C(C=CC4=CC=CC=C43)O)C
PubChem CID	62541

Physical properties
Physical form	Powder
Appearance	Red powder
Melting point	165-170 °C
LogP (XLogP3)	7.5
H-bond donors / acceptors	1 / 5
TPSA	69.7 Å²
Synonyms	Solvent Red 26, 1-((2,5-Dimethyl-4-(o-tolyldiazenyl)phenyl)diazenyl)naphthalen-2-ol, C.I. Solvent Red 26, 1-[[2,5-Dimethyl-4-[(2-methylphenyl)azo]phenyl]azo]-2-naphthol, 2-Naphthalenol, 1-((2,5-dimethyl-4-((2-methylphenyl)azo)phenyl)azo)-, 2-Naphthalenol, 1-(2-(2,5-dimethyl-4-(2-(2-methylphenyl)diazenyl)phenyl)diazenyl)-, 1-((2,5-Dimethyl-4-((2-methylphenyl)azo)phenyl)azo)-2-naphthol, 2-Naphthalenol, 1-[[2,5-dimethyl-4-[(2-methylphenyl)azo]phenyl]azo]-, 2-Naphthalenol, 1-[2-[2,5-dimethyl-4-[2-(2-methylphenyl)diazenyl]phenyl]diazenyl]-, Oil Red N1700, Oil Red Z1700, C.I. Solvent Red 26 (8CI)

Safety & hazard information (GHS)

Harmful / irritant

Health hazard

Signal word: Warning

Hazard statements

H315Causes skin irritation
H317May cause an allergic skin reaction
H319Causes serious eye irritation
H335May cause respiratory irritation
H341Suspected of causing genetic defects
H351Suspected of causing cancer

Precautionary statements: P203, P261, P264, P264 + P265, P271, P272, P280, P302 + P352, P304 + P340, P305 + P351 + P338, P318, P319, P321, P332 + P317, P333 + P317, P337 + P317, P362 + P364, P403 + P233, P405, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

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 Oil red EGN?

The CAS Registry Number of Oil red EGN is 4477-79-6. It is also known as Solvent Red 26, 1-((2,5-Dimethyl-4-(o-tolyldiazenyl)phenyl)diazenyl)naphthalen-2-ol, C.I. Solvent Red 26.

What is the molecular formula and molecular weight of Oil red EGN?

Oil red EGN has the molecular formula C25H22N4O and a molecular weight of 394.5 g/mol. Its IUPAC name is 1-[[2,5-dimethyl-4-[(2-methylphenyl)diazenyl]phenyl]diazenyl]naphthalen-2-ol.

Which grade and pack sizes of Oil red EGN can I order?

We supply Oil red EGN, in 25 g, 100 g, 5 x 1 kg, C packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Oil red EGN?

Yes. Every lot of Oil red EGN 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 Oil red EGN be shipped internationally?

Yes. Oil red EGN is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.