4-Hydrazinylbenzenesulfonic acid

Name: 4-Hydrazinylbenzenesulfonic acid
Brand: Vaqora Chemicals
SKU: VQ-051640

About 4-Hydrazinylbenzenesulfonic acid

Vaqora Chemicals supplies 4-Hydrazinylbenzenesulfonic acid, a process intermediate or related compound of Tartrazine registered under CAS number 98-71-5. Its molecular formula is C6H8N2O3S and its molecular weight is 188.21 g/mol. It is also known as 4-Hydrazinobenzenesulfonic acid or Phenylhydrazine-4-sulfonic acid.

The product is provided as a solid. Reference materials should be stored sealed and away from light and moisture, as specified on the accompanying COA. It carries the GHS signal word “Danger” with 6 hazard statements. Review the Safety Data Sheet before use.

It is a process intermediate or related compound in the synthesis of Tartrazine, useful for route development, impurity fate-and-purge studies and analytical method development. Typical end-use sectors are pharmaceutical manufacturing and academic and industrial research.

Available in 10 mg, 25 mg, 50 mg and 100 mg packs, 4-Hydrazinylbenzenesulfonic acid is dispatched with a Certificate of Analysis (COA) to destinations worldwide.

Typical applications

API route development
Impurity fate & purge studies
Analytical method development

Industries

Related to Tartrazine

View every impurity, metabolite and intermediate we list for Tartrazine.

Tartrazine impurities

Specifications & identifiers

Chemical identifiers
Product name	4-Hydrazinylbenzenesulfonic acid
Catalogue No.	VQ-051640
CAS Number	98-71-5
IUPAC name	4-hydrazinylbenzenesulfonic acid
Molecular formula	C₆H₈N₂O₃S
Molecular weight	188.21 g/mol
Exact mass	188.0256
HSN code	2933
InChIKey	IOMZCWUHFGMSEJ-UHFFFAOYSA-N
SMILES	C1=CC(=CC=C1NN)S(=O)(=O)O
PubChem CID	66825

Physical properties
Physical form	Solid
LogP (XLogP3)	-2.4
H-bond donors / acceptors	3 / 5
TPSA	101 Å²
Synonyms	4-Hydrazinobenzenesulfonic acid, Phenylhydrazine-4-sulfonic acid, Benzenesulfonic acid, 4-hydrazino-, p-Sulfophenylhydrazine, 4-Sulfophenylhydrazine, p-Hydrazinobenzenesulfonic acid, Phenylhydrazinesulfonic acid, Phenylhydrazine-p-sulfonic acid, Sulfanilic acid, N-amino-, p-Hydrazinophenylsulfonic acid, Benzenesulfonic acid, p-hydrazino-, Benzenesulfonic acid, 4-hydrazinyl-

Safety & hazard information (GHS)

Corrosive

Harmful / irritant

Signal word: Danger

Hazard statements

H302Harmful if swallowed
H314Causes severe skin burns and eye damage
H315Causes skin irritation
H318Causes serious eye damage
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary statements: P260, P261, P264, P264 + P265, P270, P271, P280, P301 + P317, P301 + P330 + P331, P302 + P352, P302 + P361 + P354, P304 + P340, P305 + P351 + P338, P305 + P354 + P338, P316, P317, P319, P321, P330, P332 + P317, P337 + P317, P362 + P364, P363, P403 + P233

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 4-Hydrazinylbenzenesulfonic acid?

The CAS Registry Number of 4-Hydrazinylbenzenesulfonic acid is 98-71-5. It is also known as 4-Hydrazinobenzenesulfonic acid, Phenylhydrazine-4-sulfonic acid, Benzenesulfonic acid, 4-hydrazino-.

What is the molecular formula and molecular weight of 4-Hydrazinylbenzenesulfonic acid?

4-Hydrazinylbenzenesulfonic acid has the molecular formula C6H8N2O3S and a molecular weight of 188.21 g/mol. Its IUPAC name is 4-hydrazinylbenzenesulfonic acid.

What is 4-Hydrazinylbenzenesulfonic acid used for?

4-Hydrazinylbenzenesulfonic acid is supplied as a characterised reference material related to Tartrazine. It is used for analytical method development and validation (AMV), impurity profiling, stability studies and quality control, and in ANDA/DMF regulatory filings.

Which grade and pack sizes of 4-Hydrazinylbenzenesulfonic acid can I order?

We supply 4-Hydrazinylbenzenesulfonic acid, in 10 mg, 25 mg, 50 mg, 100 mg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with 4-Hydrazinylbenzenesulfonic acid?

Yes. Every lot of 4-Hydrazinylbenzenesulfonic acid 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 4-Hydrazinylbenzenesulfonic acid be shipped internationally?

Yes. 4-Hydrazinylbenzenesulfonic acid 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.