Naphthalene
CAS 91-20-3
EC 202-049-5
Formula C10H8
MW 128.17 g/mol
Pigments & Colorants Printing & PackagingPersonal Care & CosmeticsTextile, Leather & PaperAgriculture & FeedPharmaceuticals & Healthcare Flavoring & AcidulantPreservation & Biocide
Description
Naphthalene (CAS 91-20-3, EC 202-049-5, C10H8), also known commercially as whitetar, Naftalen, mighty150, and mightyrd1, is a polycyclic aromatic hydrocarbon derived primarily from coal tar or petroleum refining. It carries no assigned E-code and is classified under HS code 29029010.
In textile and leather processing, naphthalene functions as an intermediate for synthetic dyes and tanning auxiliaries, where its fused ring structure enables electrophilic substitution reactions that produce stable colorants. In agriculture, it acts as a soil fumigant and contact biocide, disrupting cellular membranes of insects and fungi at low concentrations.
Naphthalene is available in technical and refined grades, supplied as a molten liquid for bulk industrial delivery. It is subject to REACH registration requirements within the EU, and handling must comply with applicable occupational exposure and environmental discharge regulations. Packaging formats are confirmed at order.
In textile and leather processing, naphthalene functions as an intermediate for synthetic dyes and tanning auxiliaries, where its fused ring structure enables electrophilic substitution reactions that produce stable colorants. In agriculture, it acts as a soil fumigant and contact biocide, disrupting cellular membranes of insects and fungi at low concentrations.
Naphthalene is available in technical and refined grades, supplied as a molten liquid for bulk industrial delivery. It is subject to REACH registration requirements within the EU, and handling must comply with applicable occupational exposure and environmental discharge regulations. Packaging formats are confirmed at order.
Physical Properties
| Melting Point | 80.2 °C |
| Boiling Point | 217.9 °C @ Press: 760 Torr |
| Density | 1.162 g/cm³ @ Temp: 20 °C |
| Flash Point | 174 °F |
| Appearance | Naphthalene is a colorless to brown crystalline solid with a characteristic “moth ball” odor. Shipped as a molten solid. |
| Color | White to almost white |
| Odor | at 10.00 % in benzyl benzoate. pungent dry tarry |
| Form | Faint beige to brown to salmon red powder |
| Water Solubility | 30 mg/L (25 ºC) |
| Vapor Pressure | 0.03 mm Hg ( 25 °C) |
| Refractive Index | 1.5821 |
| Log P | 3.7 at 25℃ |
Safety & Handling (Learn More)
Warning GHS07 GHS08 GHS09 GHS02
H
H228H302H316H317H320H335H351H370H371H372H400H410H411
P
P203P210P240P241P260P261P264P270P271P272P273P280P318P319P321P330P391P405P501P264+P265P301+P317P302+P352P304+P340P308+P316P332+P317P333+P317P337+P317P362+P364P370+P378P403+P233P305+P351+P338
Trade & Regulatory
| HS Code | 29029010 |
| UN Number | 1334 |
| ADR Class | 4.1 |
| Packing Group | III |
| Storage Class | 4.1B - Flammable solid hazardous materials |
| WGK (Germany) | 3 |
Other Names
Mothballswhite tarNaftalenwhitetarNaphtheneNAPTHALINmighty150mightyrd1
Related Products
Derivatives
Need a chemical? Get a quote within 24 hours.