Sulphanilic acid, 99%

Name: Sulphanilic acid, 99%
Brand: Vaqora Chemicals
SKU: VQ-010978

About Sulphanilic acid, 99%

Sulphanilic acid is an organosulfur compound (Synthesis grade) carrying the CAS registry number 121-57-3 at a purity of 99%. Its molecular formula is C6H7NO3S and its molecular weight is 173.19 g/mol. Systematically, it is named 4-aminobenzenesulfonic acid. Common synonyms include Aniline-4-sulfonic acid and p-Aminobenzenesulfonic acid.

The material typically appears as a white to off-white powder. Key physical data: a melting point of above 300 °C. Store sealed in a dry, well-ventilated location away from incompatible materials. Under GHS it is labelled “Warning”, so handle it with suitable PPE and consult the SDS.

It is commonly used for pharmaceutical synthesis, fine chemical synthesis, dyes and pigments manufacture and optics and photonics. It is used across pharmaceutical manufacturing, academic and industrial research and textiles and dyeing.

Vaqora Chemicals supplies Sulphanilic acid in 100 g, 500 g, 5 kg and 4 x 25 kg packs, each shipped with a Certificate of Analysis (COA), and exports worldwide.

Typical applications

Pharmaceutical synthesis
Fine chemical synthesis
Dyes & pigments manufacture
Optics & photonics
Food & flavour applications

Industries

Specifications & identifiers

Chemical identifiers
Product name	Sulphanilic acid, 99%
Catalogue No.	VQ-010978
CAS Number	121-57-3
IUPAC name	4-aminobenzenesulfonic acid
Molecular formula	C₆H₇NO₃S
Molecular weight	173.19 g/mol
Exact mass	173.0147
Grade	Synthesis
Purity / assay	99%
HSN code	29214234
InChIKey	HVBSAKJJOYLTQU-UHFFFAOYSA-N
SMILES	C1=CC(=CC=C1N)S(=O)(=O)O
PubChem CID	8479

Physical properties
Physical form	Powder
Appearance	White to off-white powder
Melting point	>300 °C
LogP (XLogP3)	-0.6
H-bond donors / acceptors	2 / 4
TPSA	88.8 Å²
Synonyms	Aniline-4-sulfonic acid, p-Aminobenzenesulfonic acid, Aniline-p-sulfonic acid, Aniline-p-sulphonic acid, p-Aminophenylsulfonic acid, p-Anilinesulfonic acid, Kyselina sulfanilova, p-sulfoaniline, 4-Sulfoaniline, 4-Sulfanilic acid, 1-aminobenzene-4-sulfonic acid, 4-aminophenylsulfonic acid

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H315Causes skin irritation
H317May cause an allergic skin reaction
H319Causes serious eye irritation

Precautionary statements: P261, P264, P264 + P265, P272, P280, P302 + P352, P305 + P351 + P338, P321, P332 + P317, P333 + P317, P337 + P317, P362 + P364, 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

Other grades of CAS 121-57-3

AR

Sulphanilic acid, GR 99%+

CAS: 121-57-3
Formula: C₆H₇NO₃S
MW: 173.19 g/mol

VQ-010979

Frequently asked questions

What is the CAS number of Sulphanilic acid, 99%?

The CAS Registry Number of Sulphanilic acid, 99% is 121-57-3. It is also known as Aniline-4-sulfonic acid, p-Aminobenzenesulfonic acid, Aniline-p-sulfonic acid.

What is the molecular formula and molecular weight of Sulphanilic acid, 99%?

Sulphanilic acid, 99% has the molecular formula C6H7NO3S and a molecular weight of 173.19 g/mol. Its IUPAC name is 4-aminobenzenesulfonic acid.

Which grade and pack sizes of Sulphanilic acid, 99% can I order?

We supply Sulphanilic acid, 99% in Synthesis (99%) grade, in 100 g, 500 g, 5 kg, 4 x 25 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Sulphanilic acid, 99%?

Yes. Every lot of Sulphanilic 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 Sulphanilic acid, 99% be shipped internationally?

Yes. Sulphanilic 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.