Ethyl red

Name: Ethyl red
Brand: Vaqora Chemicals
SKU: VQ-019861

About Ethyl red

Listed under CAS 76058-33-8, Ethyl red is a biological stain available from Vaqora Chemicals. Its molecular formula is C17H19N3O2 and its molecular weight is 297.35 g/mol. Systematically, it is named 2-[[4-(diethylamino)phenyl]diazenyl]benzoic acid. Alternative names: Ethyl Red [not Cyanin dyes] and 4-Diethylaminoazobenzene-2'-carboxylic acid.

Store in a tightly closed container in a cool, dry and well-ventilated place. The GHS classification uses the signal word “Warning”, so appropriate gloves, eye protection and ventilation are recommended.

Key uses span histology and cytology staining, microscopy, clinical laboratories and biological staining. Our customers for this product work in academic and industrial research, diagnostics and biotechnology and textiles and dyeing.

We offer Ethyl red in 10 g packs with a batch-specific COA, and ship to customers worldwide. A Safety Data Sheet (SDS) and technical specifications are available on request.

Typical applications

Histology & cytology staining
Microscopy
Clinical laboratories
Biological staining

Industries

Specifications & identifiers

Chemical identifiers
Product name	Ethyl red
Catalogue No.	VQ-019861
CAS Number	76058-33-8
IUPAC name	2-[[4-(diethylamino)phenyl]diazenyl]benzoic acid
Molecular formula	C₁₇H₁₉N₃O₂
Molecular weight	297.35 g/mol
Exact mass	297.1477
InChIKey	HBRCDTRQDHMTDA-UHFFFAOYSA-N
SMILES	CCN(CC)C1=CC=C(C=C1)N=NC2=CC=CC=C2C(=O)O
PubChem CID	54832

Physical properties
Physical form	Other
LogP (XLogP3)	4.1
H-bond donors / acceptors	1 / 5
TPSA	65.3 Å²
Synonyms	Ethyl Red [not Cyanin dyes], 4-Diethylaminoazobenzene-2'-carboxylic acid, (E)-2-((4-(diethylamino)phenyl)diazenyl)benzoic acid, Benzoic acid, 2-((4-(diethylamino)phenyl)azo)-, Benzoic acid, 2-[[4-(diethylamino)phenyl]azo]-, Benzoic acid, 2-[2-[4-(diethylamino)phenyl]diazenyl]-, Ethyl Red Indicator, 2-{[4-(diethylamino)phenyl]diazenyl}benzoic acid, Ethyl red indicator (4.5-6.5), 2-[4-(diethylamino)phenyl]azobenzoic acid, 4-(Diethylamino)azobenzene-2'-carboxylic acid, 2-([4-(Diethylamino)phenyl]diazenyl)benzoic acid #

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary statements: P261, P264, P264 + P265, P271, P280, P302 + P352, P304 + P340, P305 + P351 + P338, P319, P321, P332 + 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 Ethyl red?

The CAS Registry Number of Ethyl red is 76058-33-8. It is also known as Ethyl Red [not Cyanin dyes], 4-Diethylaminoazobenzene-2'-carboxylic acid, (E)-2-((4-(diethylamino)phenyl)diazenyl)benzoic acid.

What is the molecular formula and molecular weight of Ethyl red?

Ethyl red has the molecular formula C17H19N3O2 and a molecular weight of 297.35 g/mol. Its IUPAC name is 2-[[4-(diethylamino)phenyl]diazenyl]benzoic acid.

Which grade and pack sizes of Ethyl red can I order?

We supply Ethyl red, in 10 g packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Ethyl red?

Yes. Every lot of Ethyl red 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 Ethyl red be shipped internationally?

Yes. Ethyl red 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.