2-Amino-1-naphthalenesulfonic acid Industrial Grade Purity 98.0% Dye Intermediates

2-Amino-1-naphthalenesulfonic acid CAS 81-16-3 | Dye Intermediates

2-Amino-1-naphthalenesulfonic acid (CAS 81-16-3, EINECS 201-331-5, molecular formula C10H9NO3S, molecular weight 223.25) is a dye intermediate product. Naphthalene-series dye intermediate used in the synthesis of acid, azo and direct dyes; also a key raw material for downstream naphthalene intermediates such as J acid and gamma acid.

I. Basic Product Information

II. Technical Specifications & Supply Information

III. Applications

Naphthalene-series dye intermediate used in the synthesis of acid, azo and direct dyes; also a key raw material for downstream naphthalene intermediates such as J acid and gamma acid.

IV. Quality & Supply Assurance

1. Stable batch-to-batch quality, with batch-by-batch inspection before shipment; a COA is provided with each delivery for full traceability;

2. Standard grades held in stock for fast delivery; bulk custom packing and long-term agreement supply supported;

3. Samples available on request, with third-party testing (e.g., SGS) to support incoming-material verification;

4. Our product line covers dye, pharmaceutical, agrochemical and organic pigment intermediates — a one-stop source for multi-category raw materials.

V. Frequently Asked Questions (FAQ)

Q: What are the CAS number and molecular formula of 2-Amino-1-naphthalenesulfonic acid?

A: 2-Amino-1-naphthalenesulfonic acid has CAS registry number 81-16-3, molecular formula C10H9NO3S, molecular weight 223.25 and EINECS number 201-331-5.

Q: What are the main uses and applications of 2-Amino-1-naphthalenesulfonic acid?

A: Naphthalene-series dye intermediate used in the synthesis of acid, azo and direct dyes; also a key raw material for downstream naphthalene intermediates such as J acid and gamma acid.

Q: What are the standard purity and grade of 2-Amino-1-naphthalenesulfonic acid?

A: Standard supply purity ≥98.0% (HPLC, dry basis), grade Industrial Grade; custom assay and special specifications available on request — exact figures are per the batch COA.

Q: What are the packing specifications and minimum order quantity (MOQ) of 2-Amino-1-naphthalenesulfonic acid?

A: Standard packing: 25 kg woven bag / fiber drum. Samples available on request and custom packing supported; bulk orders can be delivered in batches per agreement.

Q: Can you provide COA, MSDS and other quality documents?

A: Naphthalene-series dye intermediate used in the synthesis of acid, azo and direct dyes; also a key raw material for downstream naphthalene intermediates such as J acid and gamma acid.

Q: How should 2-Amino-1-naphthalenesulfonic acid be stored and transported?

A: Naphthalene-series dye intermediate used in the synthesis of acid, azo and direct dyes; also a key raw material for downstream naphthalene intermediates such as J acid and gamma acid.

VI. Keywords

2-Amino-1-naphthalenesulfonic acid, Tobias acid, 2-Amino-1-naphthalenesulfonic acid, 2-Naphthylamine-1-sulfonic acid, 81-16-3, Dye Intermediates