Naphthalene
USP/1457083 - United States Pharmacopeia (USP) Reference Standard
CAS Number: 91-20-3
Empirical Formula (Hill Notation): C10H8
Molecular Weight: 128.17
MDL Number: MFCD00001742
Linear Formula: C10H8
Product Type: Chemical
| API family | naphthalene |
| application(s) | USP Biologics pharmaceutical (small molecule) |
| autoignition temp. | 978 °F |
| bp | 218 °C (lit.) |
| expl. lim. | 5.9 % |
| form | flakes |
| format | neat |
| grade | pharmaceutical primary standard |
| InChI | 1S/C10H8/c1-2-6-10-8-4-3- |
| InChI key | UFWIBTONFRDIAS-UHFFFAOYSA |
| manufacturer/tradename | USP |
| mp | 80-82 °C (lit.) |
| SMILES string | c1ccc2ccccc2c1 |
| vapor density | 4.4 (vs air) |
| vapor pressure | 0.03 mmHg ( 25 °C) |
| Analysis Note: | These products are for test and assay use only. They are not meant for administration to humans or animals and cannot be used to diagnose, treat, or cure diseases of any kind. |
| Application: | Naphthalene USP reference standard, intended for use in specified quality tests and assays as specified in the USP compendia. Also, for use with USP monographs such as: • Light Mineral Oil • Mineral Oil • Paraffin |
| General description: | Naphthalene is a polycyclic aromatic hydrocarbon that is occasionally used in biologics formulations, particularly in processes where its role as a solvent or stabilizer is beneficial. In the biologics industry, naphthalene is valued for its ability to interact with certain bioactive molecules, helping to stabilize compounds in formulations and enhancing their efficacy in therapeutic applications. The United States Pharmacopeia (USP) provides quality standards for biologics to ensure their safety, efficacy, and quality throughout the manufacturing process. These standards assist manufacturers in adhering to regulatory requirements and help safeguard public health by reducing risks associated with biologics. |
| General description: | This product is provided as delivered and specified by the issuing Pharmacopoeia. All information provided in support of this product, including SDS and any product information leaflets have been developed and issued under the Authority of the issuing Pharmacopoeia.For further information and support please go to the website of the issuing Pharmacopoeia ![]() |
| Other Notes: | Sales restrictions may apply. |
| Other Notes: | This product is part of USP Biologics Program. |
| Other Notes: | This product is provided as delivered and specified by the issuing Pharmacopoeia. All information provided in support of this product, including SDS and any product information leaflets have been developed and issued under the Authority of the issuing Pha |
| Other Notes: | This product is provided as delivered and specified by the issuing Pharmacopoeia. All information provided in support of this product, including SDS and any product information leaflets have been developed and issued under the Authority of the issuing Pharmacopoeia.For further information and support please go to the website of the issuing Pharmacopoeia ![]() |
| Symbol | ![]() ![]() ![]() GHS02,GHS07,GHS08,GHS09 |
| Signal word | Warning |
| Hazard statements | H228 - H302 - H351 - H410 |
| Precautionary statements | P210 - P280 - P301 + P312 + P330 - P370 + P378 |
| RIDADR | UN1334 - class 4.1 - PG 3 - Naphthalene, crude |
| WGK Germany | WGK 3 |
| Flash Point(F) | 176.0 °F - closed cup |
| Flash Point(C) | 80.0 °C - closed cup |
| bp | 218 °C (lit.) |
| mp | 80-82 °C (lit.) |
| UNSPSC | 41116107 |





