Naphthalene Crude

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Naphthalene Crude Specification

Molecular Weight
128.17 g/mol

Solubility
Slightly soluble in water; readily soluble in organic solvents

Appearance
White to light brown crystalline solid

Density
1.14 Gram per cubic centimeter(g/cm3)

Odour
Characteristic aromatic smell

Storage Instructions
Store in a cool, dry, and well-ventilated area away from ignition sources

Chemical Name
Naphthalene Crude

Other Names
Crude Naphthalene, White Tar

Classification
Aromatic Hydrocarbon

CAS No
91-20-3

Type
Technical Grade

Application
Chemical Intermediate, Dye Manufacturing, Synthetic Resin Production

Application Method
Industrial Processing

Raw Material
Coal Tar

Physical State
Solid

Usage
Used in production of phthalic anhydride, insecticides, and dye intermediates

Shelf Life
24 Months

Purity(%)
78%

Best Before
Use within shelf life period

Grade
Crude Industrial Grade

Toxicity
Moderate

Boiling Point
218C

Brand Name
Various (as per manufacturer)

Flash Point
79C

Hazard Class
IRRITANT; Harmful if inhaled

Packaging Type
HDPE bags, drums, bulk

Melting Point
79-82C

About Naphthalene Crude

Naphthalene C
10H
8. It is the simplest polycyclic aromatic hydrocarbon, and is a white crystalline solid with a characteristic odor that is detectable at concentrations as low as 0.08 ppm by mass.[13] As an aromatic hydrocarbon, naphthalene's structure consists of a fused pair of benzene rings. It is best known as the main ingredient of traditional mothballs.

The crude naphthalene resulting from this process is about 95% naphthalene by weight. The chief impurities are the sulfur-containing aromatic compound benzothiophene (< 2%), indane (0.2%), indene (< 2%), and methylnaphthalene (< 2%). Petroleum-derived naphthalene is usually purer than that derived from coal tar. Where required, crude naphthalene can be further purified by recrystallization from any of a variety of solvents, resulting in 99% naphthalene by weight, referred to as 80^oC (melting point).

Prominent Features

Naphthalene Crude stands out for its substantial purity (78%), moderate toxicity, and versatility as an industrial chemical. Its aromatic nature makes it valuable in manufacturing phthalic anhydride, synthetic resins, and dye intermediates. Available in multiple packaging forms, it caters to diverse industrial demands, ensuring safe and efficient delivery.

Safe Handling & Storage

Proper storage is vital for Naphthalene Crude. It must be kept in a cool, dry, well-ventilated area, far from heat or ignition sources to preserve its quality and safety. Always use appropriate personal protective equipment during handling to avoid irritation or harmful exposure.

Wide Industrial Applications

This product serves as a key raw material in the chemical industry, especially for phthalic anhydride, insecticides, and dyes. Its adaptability for industrial processing enhances productivity across sectors, making it essential for manufacturers of dyes, plastics, and resins.

FAQs of Naphthalene Crude:

Q: How should Naphthalene Crude be stored to ensure safety and longevity?

A: Naphthalene Crude should be stored in a cool, dry, and well-ventilated location, away from any ignition sources. It is recommended to keep the product in closed HDPE bags or drums and always use personal protective equipment when handling.

Q: What are the primary industrial uses of Naphthalene Crude?

A: Naphthalene Crude is mainly used as a chemical intermediate, especially in the production of phthalic anhydride, manufacturing dyes, and synthetic resins. It is also used for producing certain insecticides and dye intermediates.

Q: When is Naphthalene Crude considered best for use, and what is its shelf life?

A: Naphthalene Crude should ideally be used within its 24-month shelf life, as indicated by the best before recommendation. Using it within this period ensures optimal purity and performance for industrial applications.

Q: Where is Naphthalene Crude typically sourced and distributed?

A: Naphthalene Crude is sourced from coal tar and is widely distributed by suppliers and distributors located throughout India, with branding varying according to the manufacturer.

Q: What safety measures should be followed when using Naphthalene Crude in industrial processes?

A: Due to its classification as an irritant and moderate toxicity, operators should avoid inhaling vapors and ensure good ventilation. Wearing safety goggles, gloves, and suitable respiratory protection is advised during handling or processing.

Q: How is Naphthalene Crude processed in manufacturing applications?

A: Naphthalene Crude is directly fed as a solid into industrial reactors or equipment, where it acts as a precursor for chemicals like phthalic anhydride or as an ingredient in dye synthesis and resin production.

Q: What are the key benefits of using Naphthalene Crude in chemical manufacturing?

A: Naphthalene Crude provides reliable aromatic hydrocarbon input, enabling efficient synthesis of dyes, resins, and plasticizers. Its favourable melting and boiling points support smooth integration into multiple chemical processes.

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