1,5-Naphthalenedisulfonic acid Bulk Supply for Industrial Use

China Factory Direct
CAS number 81-04-9
Product name 1,5-Naphthalenedisulfonic acid
Stock Stock readily available; annual supply capacity exceeding 1,000 tons.
Grade Pharmaceutical GradeIndustrial GradeSpecialty GradeReagent GradeCosmetic GradeFood Grade
Packaging 25KG/bag500KG/bag1000KG/bag
Sample Test Samples Available (Click to Request Samples)
COA View COA
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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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CAS No:81-04-9
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Documents We Provide for 1,5-Naphthalenedisulfonic acid

COA TDS SDS NMR MOA Certificate of Origin Transport Report TSCA Declaration Production Flow Chart
Pre-sale: Only COA, SDS and NMR are available.
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 1,5-Naphthalenedisulfonic acid Supplier from China

17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.

Industrial Applications of 1,5-Naphthalenedisulfonic acid

Industry Application Process
Textiles Dye intermediates Synthesis of reactive dyes via diazotization
Dyeing and Printing Production of acid mordant dyes Dye preparation via sulfonation and coupling reactions
Pharmaceuticals Drug synthesis intermediates Synthesis of antipyretic and analgesic agents
Analytical Chemistry Spectrophotometric reagents Preparation of colorimetric reagents or extractants
Consumer Chemicals Fragrance synthesis intermediates Sulfonated products used in condensation reactions

Manufacturing Quality Control of 1,5-Naphthalenedisulfonic acid

Detection Item Common Analytical Method Method Overview
Assay (Purity) Acid-Base Titration Quantifies 1,5-naphthalenedisulfonic acid content by neutralization with standardized NaOH solution using phenolphthalein indicator.
Moisture Content Karl Fischer Titration Determines water content via coulometric or volumetric titration based on the stoichiometric reaction of iodine with water in pyridine/methanol medium.
Residue on Ignition Gravimetric Analysis Measures non-volatile inorganic impurities by ignition at 700-800 C and weighing the residual ash.
Heavy Metals (as Pb) Colorimetric Sulfide Precipitation Detects heavy metals by formation of colored metal sulfide complexes under controlled pH after digestion.
Sulfate (SO4) Impurity Barium Chloride Precipitation Quantifies sulfate as insoluble BaSO4 precipitate formed in acidic medium, followed by gravimetric determination.
Chloride (Cl) Impurity Silver Nitrate Titration Determines chloride by precipitation with AgNO3 using potassium chromate indicator (Mohr method).
Iron (Fe) Content Atomic Absorption Spectroscopy (AAS) Measures iron concentration by quantifying absorbance of ground-state Fe atoms at 248.3 nm in acetylene-air flame.
pH of Aqueous Solution Potentiometric Measurement Determines hydrogen ion activity using calibrated glass electrode and reference electrode in a 1% w/v aqueous solution.
Organic Impurities (Related Substances) High-Performance Liquid Chromatography (HPLC) Separates and quantifies structurally related compounds (e.g., mono-sulfonated isomers, naphthalene) using reversed-phase C18 column and UV detection.
Melting Point Capillary Melting Point Apparatus Determines temperature range at which solid transitions to liquid, indicating purity and identity based on crystalline structure.
Sodium (Na) Content Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES) Quantifies sodium by measuring characteristic atomic emission intensity at 589.6 nm after acid digestion and plasma atomization.
Bulk Density Graduated Cylinder Method Measures mass per unit volume of freely settled powder using standardized tapping procedure per ASTM D1895.

Technical Specifications of 1,5-Naphthalenedisulfonic acid

Test Item Specification
Appearance Pale-yellow solid
Purity >=98.0% (HPLC)
Water Content (KF) <=0.5%
Melting Point 230-235°C (decomposes)
Total Impurities <=2.0%
Single Impurity <=0.5%
Heavy Metals <=10 ppm
Residue on Ignition <=0.1%
Specifications vary by industry. Reach out to our technical experts for a COA tailored specifically to your application. Email:selse@GRchemical.com

Download COA of 1,5-Naphthalenedisulfonic acid

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NMR Spectra of 1,5-Naphthalenedisulfonic acid

Safety Information of 1,5-Naphthalenedisulfonic acid

Pictograms
Signal Word Danger
Safety Data Sheet

Packaging of 1,5-Naphthalenedisulfonic acid

We have a diverse range of chemicals in stock. Available in Bagged goods (25 kg.),Big bags (500 kg.), Big bags (1000 kg.).

Industrial 1,5-Naphthalenedisulfonic 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.

Industrial
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Bulk
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Factory
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ISO 9001
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Samples
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