5,5'-Dithiobis-(2-nitrobenzoic acid), 99%

Name: 5,5'-Dithiobis-(2-nitrobenzoic acid), 99%
Brand: Vaqora Chemicals
SKU: VQ-008370

About 5,5'-Dithiobis-(2-nitrobenzoic acid), 99%

5,5'-Dithiobis-(2-nitrobenzoic acid) (CAS 69-78-3) is a carboxylic acid offered by Vaqora Chemicals (Extra Pure grade), specified at 99% purity. Formula C14H8N2O8S2, molecular weight 396.4 g/mol. The IUPAC name is 5-[(3-carboxy-4-nitrophenyl)disulfanyl]-2-nitrobenzoic acid. Alternative names: DTNB and 3-Carboxy-4-nitrophenyl disulfide.

In its supplied form it is a yellow powder. Literature values give a melting point of 240-245 °C and a density of 1.79 g/cm3. Store sealed in a dry, well-ventilated location away from incompatible materials. It carries the GHS signal word “Warning” with 3 hazard statements. Review the Safety Data Sheet before use.

Key uses span analytical determinations and protein and peptide research. Our customers for this product work in pharmaceutical manufacturing and academic and industrial research.

Vaqora Chemicals supplies 5,5'-Dithiobis-(2-nitrobenzoic acid) in 1 g, 5 g, 10 g and 25 g packs, each shipped with a Certificate of Analysis (COA), and exports worldwide.

Typical applications

Analytical determinations
Protein & peptide research

Industries

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	5,5'-Dithiobis-(2-nitrobenzoic acid), 99%
Catalogue No.	VQ-008370
CAS Number	69-78-3
IUPAC name	5-[(3-carboxy-4-nitrophenyl)disulfanyl]-2-nitrobenzoic acid
Molecular formula	C₁₄H₈N₂O₈S₂
Molecular weight	396.4 g/mol
Exact mass	395.9722
Grade	Extra Pure
Purity / assay	99%
HSN code	29309090
InChIKey	KIUMMUBSPKGMOY-UHFFFAOYSA-N
SMILES	C1=CC(=C(C=C1SSC2=CC(=C(C=C2)[N+](=O)[O-])C(=O)O)C(=O)O)[N+](=O)[O-]
PubChem CID	6254

Physical properties
Physical form	Powder
Appearance	Yellow powder
Melting point	240-245 °C
Density	1.79 g/cm3
LogP (XLogP3)	2.7
H-bond donors / acceptors	2 / 10
TPSA	217 Å²
Synonyms	DTNB, 3-Carboxy-4-nitrophenyl disulfide, 6,6'-Dinitro-3,3'-dithiodibenzoic acid, Bis(3-carboxy-4-nitrophenyl) disulfide, Ellman's Reagent, 5,5'-Dithiobis(2-nitrobenzoic acid), Dithionitrobenzoic acid, Benzoic acid, 3,3'-dithiobis[6-nitro-, Dithiobisnitrobenzoic acid, 3,3'-Dithiobis(6-nitrobenzoic acid), Ellmans reagent, Ellman Reagent

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 5,5'-Dithiobis-(2-nitrobenzoic acid), 99%?

The CAS Registry Number of 5,5'-Dithiobis-(2-nitrobenzoic acid), 99% is 69-78-3. It is also known as DTNB, 3-Carboxy-4-nitrophenyl disulfide, 6,6'-Dinitro-3,3'-dithiodibenzoic acid.

What is the molecular formula and molecular weight of 5,5'-Dithiobis-(2-nitrobenzoic acid), 99%?

5,5'-Dithiobis-(2-nitrobenzoic acid), 99% has the molecular formula C14H8N2O8S2 and a molecular weight of 396.4 g/mol. Its IUPAC name is 5-[(3-carboxy-4-nitrophenyl)disulfanyl]-2-nitrobenzoic acid.

Which grade and pack sizes of 5,5'-Dithiobis-(2-nitrobenzoic acid), 99% can I order?

We supply 5,5'-Dithiobis-(2-nitrobenzoic acid), 99% in Extra Pure (99%) grade, in 1 g, 5 g, 10 g, 25 g, 100 g packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with 5,5'-Dithiobis-(2-nitrobenzoic acid), 99%?

Yes. Every lot of 5,5'-Dithiobis-(2-nitrobenzoic acid), 99% 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 5,5'-Dithiobis-(2-nitrobenzoic acid), 99% be shipped internationally?

Yes. 5,5'-Dithiobis-(2-nitrobenzoic acid), 99% 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.