1-Amino-2-naphthol-4-sulphonic acid, 98%

Name: 1-Amino-2-naphthol-4-sulphonic acid, 98%
Brand: Vaqora Chemicals
SKU: VQ-010741

About 1-Amino-2-naphthol-4-sulphonic acid, 98%

1-Amino-2-naphthol-4-sulphonic acid is an organosulfur compound (Extra Pure grade) carrying the CAS registry number 116-63-2 at a purity of 98%. Formula C10H9NO4S, molecular weight 239.25 g/mol. Systematically, it is named 4-amino-3-hydroxynaphthalene-1-sulfonic acid. Alternative names: 4-Amino-3-hydroxy-1-naphthalenesulfonic acid and 1-Amino-2-naphthol-4-sulfonic acid.

It is supplied as a white to light pink to brown powder. Literature values give a melting point of 290 °C (dec.). 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.

Typical applications include organic synthesis and API synthesis. It is used across pharmaceutical manufacturing and academic and industrial research.

Available in 25 g, 100 g, 500 g and 1 kg packs, 1-Amino-2-naphthol-4-sulphonic acid is dispatched with a Certificate of Analysis (COA) to destinations worldwide.

Typical applications

Organic synthesis
API synthesis

Industries

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	1-Amino-2-naphthol-4-sulphonic acid, 98%
Catalogue No.	VQ-010741
CAS Number	116-63-2
IUPAC name	4-amino-3-hydroxynaphthalene-1-sulfonic acid
Molecular formula	C₁₀H₉NO₄S
Molecular weight	239.25 g/mol
Exact mass	239.0252
Grade	Extra Pure
Purity / assay	98%
HSN code	29222130
InChIKey	RXCMFQDTWCCLBL-UHFFFAOYSA-N
SMILES	C1=CC=C2C(=C1)C(=CC(=C2N)O)S(=O)(=O)O
PubChem CID	8316

Physical properties
Physical form	Powder
Appearance	White to light pink to brown powder
Melting point	290 °C (dec.)
LogP (XLogP3)	0.9
H-bond donors / acceptors	3 / 5
TPSA	109 Å²
Synonyms	4-Amino-3-hydroxy-1-naphthalenesulfonic acid, 1-Amino-2-naphthol-4-sulfonic acid, 1-Amino-4-sulfo-2-naphthol, 1,2,4-Acid, ANSK compound, 4-Amino-3-hydroxynaphthalenesulfonic acid, 2-Hydroxy-4-sulfo-1-naphthylamine, 4-Amino-3-hydroxynaphthalene-1-sulphonic acid, 4-amino-3-hydroxy-naphthalene-1-sulfonic acid, 4-Amino-3-Hydroxy-1-Naphdialene Sulfonic Acid, 1,2,4-Aminonaphtholsulfonic acid, Naphthalenesulfonic acid, 4-amino-3-hydroxy-

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
H412Harmful to aquatic life with long lasting effects

Precautionary statements: P261, P264, P264 + P265, P271, P273, 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

Other grades of CAS 116-63-2

EP

1-Amino-2-naphthol-4-sulphonic acid, EP

CAS: 116-63-2
Formula: C₁₀H₉NO₄S
MW: 239.25 g/mol

VQ-047066

AR

1-Amino-2-naphthol-4-sulphonic acid, GR 98%+

CAS: 116-63-2
Formula: C₁₀H₉NO₄S
MW: 239.25 g/mol

VQ-010742

Frequently asked questions

What is the CAS number of 1-Amino-2-naphthol-4-sulphonic acid, 98%?

The CAS Registry Number of 1-Amino-2-naphthol-4-sulphonic acid, 98% is 116-63-2. It is also known as 4-Amino-3-hydroxy-1-naphthalenesulfonic acid, 1-Amino-2-naphthol-4-sulfonic acid, 1-Amino-4-sulfo-2-naphthol.

What is the molecular formula and molecular weight of 1-Amino-2-naphthol-4-sulphonic acid, 98%?

1-Amino-2-naphthol-4-sulphonic acid, 98% has the molecular formula C10H9NO4S and a molecular weight of 239.25 g/mol. Its IUPAC name is 4-amino-3-hydroxynaphthalene-1-sulfonic acid.

Which grade and pack sizes of 1-Amino-2-naphthol-4-sulphonic acid, 98% can I order?

We supply 1-Amino-2-naphthol-4-sulphonic acid, 98% in Extra Pure (98%) grade, in 25 g, 100 g, 500 g, 1 kg, 4 x 25 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with 1-Amino-2-naphthol-4-sulphonic acid, 98%?

Yes. Every lot of 1-Amino-2-naphthol-4-sulphonic acid, 98% 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 1-Amino-2-naphthol-4-sulphonic acid, 98% be shipped internationally?

Yes. 1-Amino-2-naphthol-4-sulphonic acid, 98% 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.