CAS 2508-19-2

Trinitrobenzenesulfonic acid

Description:

Trinitrobenzenesulfonic acid (TNBS) is a chemical compound characterized by its complex structure, which includes a benzene ring substituted with three nitro groups and a sulfonic acid group. It is typically a yellow crystalline solid that is highly soluble in water and polar organic solvents. TNBS is known for its strong electrophilic properties, making it a useful reagent in organic synthesis and analytical chemistry, particularly in the determination of amino acids and proteins. The presence of multiple nitro groups contributes to its high reactivity and potential as a nitrating agent. Additionally, TNBS is utilized in various applications, including as a coupling agent in dye chemistry and as a reagent for the detection of primary amines. However, it is important to handle this compound with care due to its toxic and potentially hazardous nature, as well as its environmental impact. Proper safety protocols should be followed when working with TNBS in laboratory settings.

Formula: C₆H₃N₃O₉S

InChI: InChI=1S/C6H3N3O9S/c10-7(11)3-1-4(8(12)13)6(19(16,17)18)5(2-3)9(14)15/h1-2H,(H,16,17,18)

InChI key: InChIKey=NHJVRSWLHSJWIN-UHFFFAOYSA-N

SMILES: S(=O)(=O)(O)C1=C(N(=O)=O)C=C(N(=O)=O)C=C1N(=O)=O

Synonyms:

• Picryl sulfonic acid
• 2,4,6-Trinitrobenzenesulfonic acid
• Benzenesulfonic acid, 2,4,6-trinitro-
• 2,4,6-Trinitrobenzene-1-sulfonic acid
• Trinitrobenzenesulfonic acid

Picrylsulfonic acid solution 5 % (w/v) in H2O

CAS: 2508-19-2

Formula: C6H3N3O9S

Molecular weight: 293.17

Ref: 23-P2297

Picrylsulfonic Acid (ca. 1% in N,N-Dimethylformamide) [for Detection of Primary Amines]

CAS: 2508-19-2

Formula: C₆H₃N₃O₉S

Color and Shape: Light yellow to Yellow clear liquid

Molecular weight: 293.16

Ref: 3B-P1447

2,4,6-Trinitrobenzenesulfonic acid (1% in DMF)

CAS: 2508-19-2

Formula: C₉H₁₀N₄O₁₀S

Purity: 95.0%

Color and Shape: Clear Liquid

Molecular weight: 366.26

Ref: 10-F321949

2,4,6-Trinitrobenzenesulfonic acid - 5% Aqueous solution

CAS: 2508-19-2

2,4,6-Trinitrobenzenesulfonic acid (also known as TNBS, TNSBA or picrylsulfonic acid) is a strongly oxidising organic acid that has long been used as a reagent to determine the presence of free primary amine groups. TNBS reacts rapidly with primary amines to form highly coloured N-trinitrophenyl acid products which can then be analysed by colorimetry. The amine can be regenerated by treatment with hydrazine. This analytical technique can also be applied to thiols and hydrazides. As is common with nitrated aromatic compounds, there is a risk of explosion and TNBS is typically commercially available as a solution. We also supply the 1% solution in DMF.

Formula: C₆H₃N₃O₉S

Color and Shape: Colorless Yellow Clear Liquid

Molecular weight: 293.17 g/mol

Ref: 3D-FT73268

2,4,6-Trinitrobenzenesulfonic acid, 1% DMF solution

CAS: 2508-19-2

2,4,6-Trinitrobenzenesulfonic acid, also known as TNBS, TNSBA or picrylsulfonic acid, is a strongly oxidising organic acid that has long been used as a reagent to determine the presence of free primary amine groups. TNBS reacts rapidly with primary amines to form highly coloured N-trinitrophenyl products which can then be analysed by colorimetry. Competing hydrolysis of the TNBS reagent may influence the assay result. The amine can be regenerated by treatment with hydrazine. This analytical technique can also be applied to thiols and hydrazides.
As is common with nitrated aromatic compounds, there is a risk of explosion and TNBS is typically commercially available as a solution. We also supply the 5% aqueous solution.

Formula: C₆H₃N₃O₉S

Purity: Min. 95%

Color and Shape: Clear Liquid

Molecular weight: 293.17 g/mol

Ref: 3D-FT158294