Naphthalene
Naphthalene (CAS 91-20-3), a polycyclic aromatic hydrocarbon with the formula C10H8 and a molecular weight of 128.17 g/mol, is a white crystalline solid. It is widely recognised for its use as a building block in organic synthesis and as a component in scintillation counting. Tech Serve Solutions supplies high-purity Naphthalene for various analytical and research applications.
- Synonyms
- NaphthalinMoth BallsTar CamphorWhite TarCumberlandDecalin...

Organic Synthesis
Naphthalene serves as a fundamental building block in organic chemistry. Its aromatic structure makes it a versatile precursor for the synthesis of dyes, surfactants, and various other organic compounds.
Scintillation Counting
Due to its fluorescence properties, Naphthalene is suitable for use as a scintillator in radiation detection. It is incorporated into scintillation cocktails to detect and quantify radioactive isotopes.
Analytical Reagent
High-purity Naphthalene is utilised as an analytical reagent in chromatographic and spectroscopic methods. Its well-defined properties aid in calibration and as a reference standard.
Chemical Intermediate
It functions as a key intermediate in the production of phthalic anhydride, which in turn is used in the manufacture of plasticizers, resins, and dyes.
| Molecular weight | 128.17 |
|---|---|
| Empirical formula | C10H8 |
| Assay | ≥99% |
| Grade | puriss. |
| Boiling point | 218 °C(lit.) |
| Solubility | methanol: soluble50 mg/mL, clear, colorless |
| Concentration | 5000 μg/mL in methanol |
| Melting point | 80-82 °C(lit.) |
| Vapour pressure | 0.03 mmHg (25 °C) |
| Vapour density | 4.4 (vs air) |
| Autoignition temp | 978 °F |
| Storage temperature | 2-8°C |
| Suitability | suitable for scintillation |




Hazard statements
- H228Flammable solid
- H302Harmful if swallowed
- H351Suspected of causing cancer
- H410Very toxic to aquatic life with long-lasting effects
Precautionary statements
- P210Keep away from heat, sparks and open flames. No smoking
- P273Avoid release to the environment
- P281Use personal protective equipment as required
- P501Dispose of contents and container per local regulations
| Protective equipment | dust mask type N95 (US), Eyeshields, Faceshields, Gloves |
|---|---|
| Flash point | 80 °C / 176 °F |
| Transport (UN / ADR) | UN 1334 4.1/PG 3 |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xn,N |
| Risk statements (R) | 22-40-50/53 |
| Safety statements (S) | 36/37-46-60-61 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Expl Lim | 5.9 % |
|---|---|
| Fluorescence | λex 265; λem 336 in cyclohexane |
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Naphthalene used for?
+
Naphthalene is used as a building block in organic synthesis, a component in scintillation counting, and as an analytical reagent. It also serves as a chemical intermediate in the production of various industrial chemicals.
What are the CAS number and formula for Naphthalene?
+
The CAS number for Naphthalene is 91-20-3, and its chemical formula is C10H8.
What grade and purity does Tech Serve Solutions supply?
+
Tech Serve Solutions supplies Naphthalene in puriss. grade with an assay of ≥99%.
How should Naphthalene be handled safely?
+
Naphthalene is flammable and harmful if swallowed; it is also suspected of causing cancer and is very toxic to aquatic life with long-lasting effects. Handle with appropriate personal protective equipment, including a dust mask (N95), eyeshields, face shields, and gloves, in a well-ventilated area.
Is Naphthalene a controlled substance?
+
Based on the provided data, Naphthalene is not listed as a controlled substance. However, it is classified as hazardous (H228, H302, H351, H410) and requires careful handling.
How is Naphthalene packed and exported by TSS?
+
Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals, ensuring appropriate packaging for safe international shipment according to regulatory standards.
How can I request a quote or sample for Naphthalene?
+
To request a quote or sample for Naphthalene, please contact our sales team through the website or direct inquiry channels.
▶ Related products

3,4,5-Trimethoxybenzylamine
Organic Building Blocks

3,4-dihydroxyphenylacetone
Organic Building Blocks

3-Fluoro-4-methoxybenzonitrile
C8H6FNO
Organic Building Blocks
4-Ethyltoluene
C2H5C6H4CH3
Organic Building Blocks
Fluoroacetic acid
C2H3FO2
Organic Building Blocks
Methoxyacetaldehyde
C3H6O2
Organic Building Blocks
Methyl 4-acetamido-5-chloro-2-methoxybenzoate
Organic Building Blocks

Methyl 5-bromo-2-iodobenzoate
BrC6H3(I)CO2CH3
Organic Building Blocks▶ Explore more

3-Methyl-1,5-di-p-tolyl-1,4-pentazadiene
Chemical Synthesis

3-Methyl-1,5-pentanediol
Chemical Synthesis

3-Methyl-1-(2-methylphenyl)-1H-pyrazol-5-amine
C11H13N3
Chemical Synthesis
3-Methyl-1-(3′-sulfoamidophenyl)-5-pyrazolone
C10H11N3O3S
Chemical Synthesis