Molekula
Naphthalene
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Naphthalene is a polycyclic aromatic hydrocarbon commonly used as a precursor in the synthesis of dyes, pesticides, and pharmaceuticals, as well as a moth repellent in its pure form. It appears as white, volatile crystals with a characteristic odor. This chemical has a CAS number of 91-20-3, a molecular formula of C10H8, and a molecular weight of 128.17 g/mol. It is typically stored at ambient temperatures and carries a signal word of "Warning" for safety classification. Molekula supplies Naphthalene from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
-
250 g — £55.00 per pack ex VAT · £66.00 inc. VAT
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | White crystalline flakes |
| Melting Point | 78.0-84.0 ºC |
| Assay | ≥99.0% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Flash Point | 79 °C |
| Transport Class | 4.1 |
| Packing Group | III |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | White scales, balls, powder or cakes |
| Odour | Aromatic odor |
| Melting Point | 80 °C |
| Boiling Point | 218 °C |
| Water Solubility | 31 mg/L at 25 °C |
| Vapour Pressure | 11 Pa at 25 °C |
| Refractive Index | 1.58212 |
| log P (octanol/water) | 3.30 |
Source: PubChem CID 931 (HSDB, ICSC)
Identification
| Property | Value |
|---|---|
| SKU | 21118931 |
| CAS Number | 91-20-3 |
| IUPAC Name | naphthalene |
| EC Number | 202-049-5 |
| Molecular Formula | C10H8 |
| Molecular Weight | 128.17 |
| Exact Mass | 128.0626 |
| SMILES | C1=CC=C2C=CC=CC2=C1 |
| InChIKey | UFWIBTONFRDIAS-UHFFFAOYSA-N |
| InChI | InChI=1S/C10H8/c1-2-6-10-8-4-3-7-9(10)5-1/h1-8H |
| PubChem CID | 931 |
| UN Number | UN1334 |
| REACH Code | Y110 |
| HTS Code | 2707400000 |
| Tariff Code | 2707400000 |
Safety & GHS
-
Flammable
GHS02
-
Health Hazard
GHS07
-
Serious Health Hazard
GHS08
-
Hazardous to the Environment
GHS09
Hazard statements
- H228 Flammable solid
- H302+312 Harmful if swallowed or in contact with skin
- H304 May be fatal if swallowed and enters airways
- H351 Suspected of causing cancer
- H400 Very toxic to aquatic life
- H410 Very toxic to aquatic life with long lasting effects
Precautionary statements
- P210 Keep away from heat/sparks/open flames/hot surfaces - No smoking
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P273 Avoid release to the environment
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P302+352 IF ON SKIN: Wash with soap and water
- P309+311 IF exposed or you feel unwell: Call a POISON CENTER or doctor/physician
Documents
Safety Data Sheets (SDS)
Available in English, English (US), French, German, Italian, Portuguese, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- Albocarbon
- Camphor tar
- Moth balls
- Moth flakes
- naphtalene
- Naphthalin
- Naphthaline
- Naphthene
- Tar camphor
- White tar
Frequently asked questions
What is naphthalene commonly used for?
Naphthalene is primarily used as a precursor in the production of phthalic anhydride, synthetic dyes, and insect repellents (e.g., mothballs). It also serves as a solvent and in the manufacturing of plastics and resins.
What is the chemical formula and molecular weight of naphthalene?
The chemical formula is **C₁₀H₈**, and the molecular weight is **128.17 g/mol**.
How should naphthalene be stored?
Store naphthalene at **ambient temperature** in a tightly sealed container, away from moisture, heat, and incompatible substances.
What grades of naphthalene does Molekula supply?
Molekula supplies **technical-grade naphthalene** (industrial purity) and **high-purity grades** upon request—confirm specifications when placing an order.
Can Molekula supply naphthalene in bulk quantities?
Yes, we offer **bulk packaging options** (e.g., 25 kg drums, 1-tonne containers) for industrial and commercial customers—contact us for pricing and lead times.
What documentation comes with a naphthalene order?
Each order includes a **Certificate of Analysis (CoA)**, **Material Safety Data Sheet (MSDS/SDS)**, and **packing list**—additional certifications (e.g., REACH, FDA) are available upon request.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.