6-Amino-1-naphthol-3-sulfonic acid CAS 87-02-5 | Dye Intermediates
6-Amino-1-naphthol-3-sulfonic acid (CAS 87-02-5, EINECS 201-718-9, molecular formula C10H9NO4S, molecular weight 239.25) is a dye intermediate product. Naphthalene-series dye intermediate used to synthesize direct, acid and reactive dyes (e.g., Direct Fast Blue and Reactive Red series); a common coupling component for deep-shade dyes on cellulosic fibers.
I. Basic Product Information
| Chinese Name | J酸 |
| English Name | 6-Amino-1-naphthol-3-sulfonic acid |
| Aliases / Synonyms | J Acid; 6-Amino-1-naphthol-3-sulfonic acid; 2-Amino-5-naphthol-7-sulfonic acid |
| IUPAC Name | 7-amino-4-hydroxynaphthalene-2-sulfonic acid |
| CAS Registry No. | 87-02-5 |
| EINECS No. | 201-718-9 |
| Molecular Formula | C10H9NO4S |
| Molecular Weight | 239.25 |
| Suggested HS Code | 2904.10 / 2922.2 (sulfonated aromatic hydrocarbons and their salts) |
| SMILES | C1=CC2=C(C=C(C=C2C=C1N)S(=O)(=O)O)O |
| InChIKey | KYARBIJYVGJZLB-UHFFFAOYSA-N |
II. Technical Specifications & Supply Information
| Appearance | Grayish-white to light brown paste or powder |
| Assay / Purity | ≥98.0% (HPLC, dry basis) |
| Grade | Industrial Grade |
| Packing | 25 kg woven bag / fiber drum |
| Standard | Enterprise standard / national standard (executed per batch COA) |
| Supply Capacity | Standard grades supplied from stock; bulk customization and long-term agreement supply supported |
| Documents Provided | COA and MSDS provided with each shipment; third-party SGS testing available for bulk orders |
| Storage Conditions | Store sealed, protected from light, in a dry and ventilated place, away from fire, heat sources and strong oxidizers |
III. Applications
Naphthalene-series dye intermediate used to synthesize direct, acid and reactive dyes (e.g., Direct Fast Blue and Reactive Red series); a common coupling component for deep-shade dyes on cellulosic fibers.
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 6-Amino-1-naphthol-3-sulfonic acid?
A: 6-Amino-1-naphthol-3-sulfonic acid has CAS registry number 87-02-5, molecular formula C10H9NO4S, molecular weight 239.25 and EINECS number 201-718-9.
Q: What are the main uses and applications of 6-Amino-1-naphthol-3-sulfonic acid?
A: Naphthalene-series dye intermediate used to synthesize direct, acid and reactive dyes (e.g., Direct Fast Blue and Reactive Red series); a common coupling component for deep-shade dyes on cellulosic fibers.
Q: What are the standard purity and grade of 6-Amino-1-naphthol-3-sulfonic 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 6-Amino-1-naphthol-3-sulfonic 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 to synthesize direct, acid and reactive dyes (e.g., Direct Fast Blue and Reactive Red series); a common coupling component for deep-shade dyes on cellulosic fibers.
Q: How should 6-Amino-1-naphthol-3-sulfonic acid be stored and transported?
A: Naphthalene-series dye intermediate used to synthesize direct, acid and reactive dyes (e.g., Direct Fast Blue and Reactive Red series); a common coupling component for deep-shade dyes on cellulosic fibers.
VI. Keywords
6-Amino-1-naphthol-3-sulfonic acid, J Acid, 6-Amino-1-naphthol-3-sulfonic acid, 2-Amino-5-naphthol-7-sulfonic acid, 87-02-5, Dye Intermediates
关键字： J Acid;6-Amino-1-naphthol-3-sulfonic acid;87-02-5;201-718-9;Dye Intermediates
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