1,5-Dihydroxy naphthalene serves as a pharmaceutical intermediate in the pharmaceutical industry, a pesticide intermediate in the agrochemical industry, an antioxidant in the cosmetics industry, and a conductive polymer precursor in the electronics industry. Factory-direct bulk supply of 1,5-dihydroxynaphthalene meets diverse industrial application requirements.

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1,5-Dihydroxy naphthalene Bulk Supply for Industrial Use

China Factory Direct
	CAS number	83-56-7
	Product name	1,5-Dihydroxy naphthalene
	Stock	Stock readily available; annual supply capacity exceeding 1,000 tons.
	Grade	Agricultural GradePharmaceutical GradeElectronic GradeMaterial GradeCosmetic GradeFood 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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CAS No:83-56-7

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Documents We Provide for 1,5-Dihydroxy naphthalene

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-Dihydroxy naphthalene Supplier from China

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

Industrial Applications of 1,5-Dihydroxy naphthalene

Industry	Application	Process
Dye Industry	Intermediate	Used in the synthesis of various dyes, such as anthraquinone dyes
Pharmaceutical Industry	Pharmaceutical Raw Material	Used in the production of certain drugs or drug intermediates
Pesticide Industry	Pesticide Manufacturing	Serves as a raw material for the preparation of certain pesticides
Cosmetic Industry	Antioxidant	Applied as an antioxidant component in cosmetic formulations
Electronics Industry	Conductive Polymer Precursor	Used in the synthesis of conductive polymers to enhance material conductivity

Manufacturing Quality Control of 1,5-Dihydroxy naphthalene

Detection Item	Common Analytical Method	Method Overview
Assay (Purity)	HPLC-UV	Quantification using reversed-phase HPLC with UV detection at 260 nm, comparing peak area to a certified reference standard.
Appearance	Visual Inspection	Assessment of physical state and color against a white background under controlled lighting; acceptable as off-white to light brown crystalline powder.
Melting Point	Capillary Melting Point Apparatus	Determination of temperature range at which solid transitions to liquid, using calibrated capillary method per USP <741>.
Loss on Drying	Gravimetric (105 C, 2 h)	Measurement of mass loss after drying under specified conditions to assess volatile content including residual solvents and moisture.
Residue on Ignition	Gravimetric (Ashing at 550 C)	Determination of inorganic residue remaining after high-temperature combustion of organic matrix.
Chloride Impurity	Ion Chromatography (IC)	Separation and quantification of chloride anion using suppressed conductivity detection with carbonate eluent.
Sulfate Impurity	Ion Chromatography (IC)	Separation and quantification of sulfate anion using suppressed conductivity detection with carbonate eluent.
Heavy Metals (as Pb)	AAS (Flame or Graphite Furnace)	Quantification of total heavy metals by atomic absorption spectroscopy after acid digestion and chelation.
Related Substances	HPLC-UV	Identification and quantification of structurally related impurities (e.g., 1-naphthol, 5-naphthol, naphthalene derivatives) using gradient HPLC.
Water Content	Karl Fischer Titration	Volumetric or coulometric titration based on iodine-sulfur dioxide reaction specific for water.
pH of 1% Aqueous Suspension	pH Meter	Measurement of hydrogen ion activity in a saturated aqueous suspension using calibrated pH electrode.
Solubility in Ethanol	Qualitative Solubility Test	Observation of complete dissolution in specified volume of ethanol at 25 C with gentle agitation; passes if clear solution forms.

Technical Specifications of 1,5-Dihydroxy naphthalene

Test Item	Specification
Appearance	Light-green solid
Purity	>=98.0% (by LC-MS)
Melting Point	129–133°C
Total Impurities	<=2.0%
Water Content (KF)	<=0.5%
Heavy Metals	<=10 ppm
Residue on Ignition	<=0.1%
Solubility	Soluble in chloroform, ethanol and hot benzene; slightly soluble in water
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-Dihydroxy naphthalene

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NMR Spectra of 1,5-Dihydroxy naphthalene

Safety Information of 1,5-Dihydroxy naphthalene

Pictograms
Signal Word	Warning
Safety Data Sheet

Packaging of 1,5-Dihydroxy naphthalene

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-Dihydroxy naphthalene 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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