2-Aminonaphthalene-1-sulfonic acid CAS 81-16-3

Product name:2-Aminonaphthalene-1-sulfonic acid
CAS：81-16-3
MF：C10H9NO3S
MW：223.25
EINECS:201-331-5

Availability:



Inquire

Model:
81-16-3
Brand:
bosschem
Code:
81-16-3

Product Description

Product Description

Product name:2-Aminonaphthalene-1-sulfonic acid

CAS：81-16-3

MF：C10H9NO3S

MW：223.25

EINECS:201-331-5

Application:

Used as an intermediate for azo dyes and azo pigments, used in the manufacture of dyes such as J acid and γ acid, norophenol AS-SW, reactive red K-1613, etc.

Specifications :

2-Aminonaphthalene-1-sulfonic acid Basic information
Product Name:	2-Aminonaphthalene-1-sulfonic acid
CAS:	81-16-3
MF:	C10H9NO3S
MW:	223.25
EINECS:	201-331-5
Mol File:	81-16-3.mol
2-Aminonaphthalene-1-sulfonic acid Chemical Properties
Melting point	180 °C
Boiling point	220°C (rough estimate)
density	1.3588 (rough estimate)
refractive index	1.5250 (estimate)
pka	pK1: 2.35 (25°C)
Water Solubility	4.083g/L(20 ºC)
Merck	146,406
BRN	613084
CAS DataBase Reference	81-16-3(CAS DataBase Reference)
NIST Chemistry Reference	2-Naphthylamine-1-sulfonic acid(81-16-3)
EPA Substance Registry System	2-Amino-1-naphthalenesulfonic acid (81-16-3)

COA

Items	Specifications
Total Amino (dry) %≥	97.0
2-Naphthylamine %≤	0.25
Moisture %≤	1.0
Insoluble matter %≤	0.10
Purity	99.0 %min

公司信息

2-Aminonaphthalene-1-sulfonic acid CAS 81-16-3 C10H9NO3S

Quality Assurance

Full-Process Quality Control: From incoming raw material inspection to in-process monitoring and final outgoing checks, every batch is inspected at each production stage against strict acceptance standards.
Third-Party Certified & Tested: Our quality management system is certified to ISO 9001, and products are regularly tested by accredited laboratories (e.g. SGS, TÜV). Test reports are available on request.
100% Batch Traceability: Each batch carries a unique lot number that links raw material records, production parameters, and test results, enabling complete traceability from factory to final delivery.
Pre-Shipment Inspection: Every order passes a final pre-shipment inspection, with inspection photos and reports shared before dispatch.

FAQ From Customers

Q1: What is the minimum order quantity?

A: There is no quantity limit for the first sample or trial order. Just tell us the actual quantity you need.
Q2: How can I confirm that the quality meets the requirements?

A: Provide your specifications, and our technical team will check them or customize them for you; we can provide TDS, MSDS, and COA, and accept third-party testing.
Q3: How do you ensure stable quality?

A: We manufacture under an ISO 9001 quality system, test every batch before release, and retain samples for 24 months for traceability.
Q4: Do you provide samples?

A: Yes — Free samples are available; freight is at buyer's expense for express delivery.