Refined Naphthalene
High-purity white crystalline flakes for dyes and chemical intermediates
Supply Origins
Packaging
25 kg Bags
Related Products
About Refined Naphthalene
Refined Naphthalene (CAS 91-20-3) is a white crystalline aromatic hydrocarbon (C₁₀H₈) produced by fractional distillation of coal tar followed by acid washing, alkali washing, and re-crystallisation to achieve 99%–99.9% purity. Our refined grade meets stringent international specifications, making it the preferred raw material for phthalic anhydride synthesis (the key feedstock for plasticisers, polyester resins, and alkyd coatings), beta-naphthol, naphthalene sulfonates used in concrete superplasticizers, and a wide range of specialty dye and agrochemical intermediates. First Chemicals supplies refined naphthalene from verified producers in China and Indonesia, with full COA, MSDS, and trade documentation provided for every shipment.
Key Applications
- Phthalic anhydride (PA) production
- Dyes, pigments, and optical brighteners
- Beta-naphthol and alpha-naphthol synthesis
- Naphthalene sulfonate superplasticizers (concrete admixtures)
- Naphthalene balls and moth repellents
- Agrochemical and insecticide intermediates
Typical Specifications
* Specifications are typical values. Actual COA provided with each shipment.
Frequently Asked Questions
What is refined naphthalene used for?
Refined naphthalene is primarily used in phthalic anhydride (PA) production, which is the key raw material for plasticisers (DOP/DINP) and polyester resins. It is also used in the synthesis of beta-naphthol, naphthalene sulfonate superplasticizers for concrete, dyes, pigments, optical brighteners, and agrochemical intermediates.
What purity of refined naphthalene does First Chemicals supply?
First Chemicals supplies refined naphthalene with a purity range of 99% to 99.9%, moisture content ≤ 0.05%, sulphur ≤ 0.1%, and a crystallisation point ≥ 79.4°C. A Certificate of Analysis (COA) is provided with every shipment.
What is the minimum order quantity for refined naphthalene?
We supply refined naphthalene in 25 kg bags, with orders typically starting from one full container load (FCL). Please contact us for exact MOQ and pricing based on your destination and required quantity.
Where is refined naphthalene sourced from?
First Chemicals sources refined naphthalene from verified manufacturers in China and Indonesia — two of the world's largest naphthalene-producing countries — ensuring reliable supply and competitive pricing.
What is the difference between refined naphthalene and crude naphthalene?
Crude naphthalene (purity ~95%+) is the raw distillate from coal tar, containing sulphur and other impurities. Refined naphthalene (99%–99.9% purity) undergoes additional purification steps — acid washing, alkali treatment, and re-crystallisation — to meet the tight specifications required for phthalic anhydride, dyes, and specialty chemical synthesis.