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Naphthalene Balls
Napthalene Balls are solid, crystalline balls made primarily of naphthalene, a white, volatile, aromatic hydrocarbon derived from coal tar or petroleum refining. Known for their strong, distinctive odor, naphthalene balls are widely used as moth repellents and deodorizing agents. Due to their sublimation property, they slowly vaporize at room temperature, releasing fumes that are toxic to moths and insects. They find broad applications in household pest control, industrial storage protection, and chemical manufacturing.
Naphthalene Balls
Primary Uses
- Moth and Insect Repellent
- Used to protect clothing, textiles, and stored fabrics from moth damage.
- Commonly placed in wardrobes, closets, and storage chests to prevent insect infestation.
- Deodorizing Agent
- Used in toilets, bathrooms, and garbage bins to mask unpleasant odors.
- Helps in maintaining a fresh and clean environment by neutralizing foul smells.
- Pest Control in Storage Facilities
- Used in grain storage, warehouses, and shipping containers to deter pests and insects.
- Prevents contamination and damage of stored goods.
Secondary Uses
- Chemical Intermediate
- Used as a raw material in the production of phthalic anhydride, dyes, plastics, and resins.
- Laboratory Reagent
- Employed in organic synthesis and analytical laboratories as a reagent or solvent.
- Air Freshener
- Utilized in small quantities in some air freshening products for strong aromatic scent.
- Disinfectant and Antifungal Agent
- Occasionally used for its mild antifungal properties in certain niche applications.
1. Basic Identification Attributes
- Chemical Name (IUPAC): Naphthalene
- Common/Trade Name: Napthalene Balls, Moth Balls
- CAS Number: 91-20-3
- HS Code: 2707.90.90
- Synonyms: Moth crystals; Moth flakes; Naphthalin
2. Physical & Chemical Properties
- Physical State: Solid balls or flakes
- Color & Odor: White crystalline solid; strong characteristic aromatic odor
- Melting Point: 80.2°C
- Boiling Point: 218°C
- Solubility: Slightly soluble in water; soluble in organic solvents (benzene, ether)
- Vapor Pressure: Moderate sublimation at room temperature
3. Safety & Hazard Attributes
- GHS Classification: Flammable solid; acute toxicity (oral) category 4; suspected carcinogen
- Toxicity: Harmful if swallowed or inhaled; prolonged exposure can cause hemolytic anemia
- Exposure Limits: OSHA PEL 10 ppm (as vapor)
4. Storage & Handling Attributes
- Storage Conditions: Store in cool, dry, well-ventilated area away from ignition sources
- Container Type: Supplied in airtight plastic or metal containers to prevent sublimation loss
- Shelf Life: Indefinite if stored properly
- Handling Precautions: Avoid inhalation and prolonged skin contact; use gloves and mask
5. Regulatory & Compliance Attributes
- Complies with chemical safety regulations (OSHA, REACH, EPA)
- Listed in major chemical inventories worldwide
6. Environmental & Health Impact
- Biodegradability: Not readily biodegradable
- Ecotoxicity: Toxic to aquatic life; avoid environmental release
- Bioaccumulation: Potential to bioaccumulate in aquatic organisms
- Carcinogenicity/Mutagenicity: Classified as possibly carcinogenic to humans (IARC Group 2B)
Safety Handling Precautions
- PPE Required: Gloves, respiratory protection, and eye protection recommended
- Handling Guidelines: Use in well-ventilated areas; avoid inhalation of dust or fumes
- Storage Measures: Keep containers tightly closed and stored away from incompatible materials
First Aid Measures
- Inhalation: Move to fresh air; seek medical attention if symptoms develop
- Skin Contact: Wash thoroughly with soap and water
- Eye Contact: Rinse with plenty of water for 15 minutes; seek medical attention if irritation persists
- Ingestion: Do not induce vomiting; seek immediate medical attention
Firefighting Measures
- Fire Hazards: Highly flammable solid; emits toxic fumes when burning
- Extinguishing Media: Use dry chemical, foam, or CO₂ extinguishers
- Special Precautions: Wear self-contained breathing apparatus and protective gear
- Hazardous Combustion Products: Carbon monoxide, carbon dioxide, and toxic hydrocarbons
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