Molekula
2-Naphthalenesulfonic acid
2-Naphthalenesulfonic acid is a sulfonic acid derivative used in dye synthesis, pharmaceuticals, and as a catalyst or intermediate in organic reactions. It appears as a white to pale yellow crystalline solid. CAS: 120-18-3, Molecular formula: C10H7SO3H, Molecular weight: 208.23 g/mol. Store at ambient temperature. Hazard classification includes signal word: Danger. Molekula supplies 2-Naphthalenesulfonic acid from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Overview
2-Naphthalenesulfonic acid is a sulfonic acid derivative used in dye synthesis, pharmaceuticals, and as a catalyst or intermediate in organic reactions. It appears as a white to pale yellow crystalline solid. CAS: 120-18-3, Molecular formula: C10H7SO3H, Molecular weight: 208.23 g/mol. Store at ambient temperature. Hazard classification includes signal word: Danger. Molekula supplies 2-Naphthalenesulfonic acid from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Specifications
| Property | Value |
|---|---|
| Water | <35% |
| Free acid | <2% |
| Metallic Ions | <20ppm |
| Appearance | Off-white crystal |
| Purity HPLC | >98% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Transport Class | 8 |
| Packing Group | II |
| Shelf Life | 24 months |
| Acidity | Acid |
Identification
| Property | Value |
|---|---|
| CAS Number | 120-18-3 |
| Molecular Formula | C10H7SO3H |
| Molecular Weight | 208.23 |
| SMILES | C1=CC=C2C=C(C=CC2=C1)S(=O)(=O)O |
| EC / UN Number | 2583 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 29041032 |
| Tariff Code | 2904100090 |
Safety & GHS
-
Compressed Gas
GHS04
Hazard statements
- H290 May be corrosive to metals
- H303 May be harmful if swallowed
- H314 (sub cat. 1A) Causes severe skin burns and eye damage
Precautionary statements
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician
- P303+361 IF ON SKIN (or hair): Remove immediately all contaminated clothing. Rinse with water/shower
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
For research and industrial use only
Documents
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.
Pricing & pack sizes
Synonyms
No alternate names recorded for this product.
Frequently asked questions
What is 2-Naphthalenesulfonic acid used for?
It is primarily used as an intermediate in the synthesis of dyes, pigments, and pharmaceuticals.
What is the chemical formula and molecular weight?
The formula is C10H7SO3H with a molecular weight of 208.23 g/mol.
How should 2-Naphthalenesulfonic acid be stored?
It should be stored at ambient temperature, away from moisture and incompatible materials.
What grade is available?
Available in technical grade; custom purity options may be available upon request.
Can Molekula supply it in bulk?
Yes, bulk quantities are available—please contact our sales team for pricing and availability.
What documentation comes with the order?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS) with the shipment.
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.