1-Naphthalenesulfonic acid Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 85-47-2 |
| Product name | 1-Naphthalenesulfonic acid |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradeIndustrial GradeMaterial GradeSpecialty Grade |
| Packaging | 25KG/bag500KG/bag1000KG/bag |
| Sample | Test Samples Available (Click to Request Samples) |
| COA | View COA |
| Price | Get Quote |
| Supply Type | Bulk / Contract manufacturing / OEM |
| Shipping | FCL / LCL available |
| Payment Terms | Support FOB \ CIF \ EXW quotations, and accept Letter of Credit (L/C). |
| Manufacturer | Greenrock Chemical(China Factory) |
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Documents We Provide for 1-Naphthalenesulfonic acid
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 1-Naphthalenesulfonic acid Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of 1-Naphthalenesulfonic acid
| Industry | Application | Process |
|---|---|---|
| Dye Industry | Intermediate for synthesizing naphthalene-based azo dyes (e.g., Acid Blue 62, Direct Black 38) | Diazotization-coupling reaction: 1-Naphthalenesulfonic acid is diazotized and then coupled with aromatic amines or phenols |
| Organic Synthesis | Production of key intermediates such as 1-naphthol and 1-naphthylamine | Alkali fusion (with NaOH) to produce 1-naphthol; reduction (catalytic hydrogenation or iron powder reduction) to produce 1-naphthylamine |
| Pesticide Industry | Precursor for insecticides (e.g., carbaryl) and plant growth regulators | Condensation with methyl chloroformate to produce carbaryl; condensation with formaldehyde and dimethylamine to produce naphthaleneacetic acid derivatives |
| Surfactants | Production of anionic dispersants (e.g., Dispersant NNO, MF) | Condensation with formaldehyde and sulfite salts to yield sulfonated formaldehyde-naphthalene sulfonates (Sodium Naphthalene Formaldehyde, SNF) |
| Rubber Industry | Raw material for rubber antioxidants (e.g., antioxidant DNP) | Condensation with p-aminophenol followed by oxidation |
Manufacturing Quality Control of 1-Naphthalenesulfonic acid
| Test Item | Common Testing Method | Method Overview |
|---|---|---|
| Appearance | Visual Inspection | Observe the color, physical state, and presence of visible impurities. Typically appears as white to light yellow crystals or powder. |
| Assay (Purity) | High-Performance Liquid Chromatography (HPLC) | Uses a reversed-phase C18 column and UV detector (e.g., 254 nm); quantification is performed by comparison with a reference standard. |
| Moisture Content | Karl Fischer Titration | Determines water content using Karl Fischer reagent; suitable for trace moisture analysis with high accuracy. |
| Sulfonic Acid Content | Acid-Base Titration | Dissolve the sample in a suitable solvent and titrate with standardized sodium hydroxide solution to calculate the sulfonic acid group content. |
| Related Substances (Impurities) | High-Performance Liquid Chromatography (HPLC) | Detects possible by-products or degradation products (e.g., naphthalene, other sulfonated isomers) via HPLC to assess purity. |
| Melting Point | Melting Point Determination (Capillary Method) | Determine the melting temperature using a melting point apparatus to evaluate purity and consistency. The melting point of 1-naphthalenesulfonic acid is generally ≥90°C. |
| pH Value | pH Meter Measurement | Prepare an aqueous solution of the sample at a specific concentration (e.g., 1%), then measure acidity or alkalinity using a pH meter to reflect acid strength. |
| Residue on Ignition (Sulfated Ash) | Gravimetric Method | Weigh the residue remaining after high-temperature incineration of the sample to assess inorganic impurity content. |
| Heavy Metals | Atomic Absorption Spectroscopy (AAS) or Colorimetric Method | After digestion, determine the levels of heavy metal elements such as lead, cadmium, and mercury to ensure compliance with safety standards. |
| Organic Volatile Impurities | Gas Chromatography (GC) | Suitable for detecting residual solvents (e.g., methanol, benzene derivatives); derivatization may be required to enhance detection sensitivity. |
Technical Specifications of 1-Naphthalenesulfonic acid
| Test Item | Specification |
|---|---|
| Appearance | White to light tan crystalline powder |
| Purity | >=98.5% |
| Water Content (KF) | <=0.5% |
| Melting Point | 124-128°C |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.5% |
| Heavy Metals | <=20 ppm |
| Residue on Ignition | <=0.1% |
| Color (APHA/Pt-Co) | <=100 |
Specifications vary by industry. Reach out to our technical experts for a COA tailored specifically to your application. Email:selse@GRchemical.com
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Download COA of 1-Naphthalenesulfonic acid
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
Packaging of 1-Naphthalenesulfonic acid
Industrial 1-Naphthalenesulfonic acid Procurement FAQ
1. How do you ensure product quality consistency?
We rely on a mature China-based manufacturing system and implement strict batch control and quality inspection for every shipment. Our production process complies with ISO 9001 standards, and a COA is provided for each batch to ensure consistent and reliable quality.
2. Do you offer competitive pricing for bulk orders?
Yes, as a China-based manufacturer and bulk supplier, we provide tiered pricing based on order volume. We support FOB and CIF quotations, as well as L/C payment terms for large transactions to meet international trade requirements.
3. Can you support large-volume or long-term supply?
We have stable production capacity and a well-established supply chain, enabling continuous bulk supply. We support ton-level and container-level orders, as well as long-term cooperation projects.
4. What is your typical lead time?
For in-stock products, shipment can be arranged within 1–3 days. For bulk packaging or customized orders, lead time depends on the specific quantity and production schedule.
5. What documents do you provide?
We can provide complete documentation upon request, including COA, SDS, TDS, and other compliance certificates, meeting industrial procurement and export requirements.
6. Can you customize product specifications or packaging?
Yes, we support customization of parameters such as purity, impurities, residual solvents, and heavy metals. We also offer various bulk packaging options, including 25kg bags, drums, and IBC tanks, suitable for industrial applications and transportation.
7. What shipping options do you support?
We support both FCL (Full Container Load) and LCL (Less than Container Load) shipments, and can flexibly arrange logistics solutions based on order size to meet bulk chemical export needs.
8. Do you provide technical or application support?
Yes, we provide basic application guidance and technical support based on industry experience to help customers optimize product usage.
9. How do you handle compliance and export regulations?
We are familiar with international trade and export regulations, ensuring all products comply with relevant requirements. We also provide complete documentation to support smooth customs clearance and global delivery.
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