Molekula
1-Naphthylamine-7-sulfonic Acid
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
1-Naphthylamine-7-sulfonic acid is a sulfonic acid derivative used in dye synthesis and analytical chemistry. It appears as a crystalline solid and is employed in the production of azo dyes and as a reagent in chemical research. CAS: 119-28-8, Molecular Formula: C10H7NO3S, Molecular Weight: 223.25 g/mol, Storage: Ambient, Signal Word: Danger. Molekula supplies 1-Naphthylamine-7-sulfonic acid 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.
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25 g — £93.30 per pack ex VAT · £111.96 inc. VAT
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Specifications
| Property | Value |
|---|---|
| Appearance | Grey to red powder |
| Identification | Conforms to reference |
| Assay | ≥97.0% |
| Insoluble Matter | ≤0.3% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Transport Class | 8 |
| Packing Group | III |
| Acidity | Acid |
Identification
| Property | Value |
|---|---|
| SKU | 89967703 |
| CAS Number | 119-28-8 |
| IUPAC Name | 8-aminonaphthalene-2-sulfonic acid |
| EC Number | 204-311-4 |
| Molecular Formula | C10H6(NH2)SO3H |
| Molecular Weight | 223.25 |
| Exact Mass | 223.0303 |
| SMILES | C1=CC2=C(C=C(C=C2)S(=O)(=O)O)C(=C1)N |
| InChIKey | QEZZCWMQXHXAFG-UHFFFAOYSA-N |
| InChI | InChI=1S/C10H9NO3S/c11-10-3-1-2-7-4-5-8(6-9(7)10)15(12,13)14/h1-6H,11H2,(H,12,13,14) |
| PubChem CID | 8386 |
| UN Number | UN2585 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 2921.45.9090 |
| Tariff Code | 2921450090 |
Safety & GHS
-
Corrosive
GHS05
Hazard statements
- H314 (sub cat. 1B) 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
Documents
Safety Data Sheets (SDS)
Available in English, 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
- 1-Amino-7-naphthalenesulfonic acid
- 1-Amino-7-sulfonaphthalene
- 1-Aminonaphthalene-7-sulfonic acid
- 1,7-Cleve's acid
- 2-Naphthalenesulfonic acid, 8-amino-
- 8-Amino-2-naphthalenesulfonic acid
- 8-AMINONAPHTHALENE-2-SULFONIC ACID
- 8-Naphthylamine-2-sulfonic acid
- Cleve's acid
- Cleve's theta-acid
Frequently asked questions
What is 1-Naphthylamine-7-sulfonic Acid used for?
It is primarily used in the synthesis of azo dyes and as an intermediate in the production of pharmaceuticals and other organic compounds.
What is the chemical formula and molecular weight?
The formula is C10H6(NH2)SO3H with a molecular weight of 223.25 g/mol.
How should this compound be stored?
Store at ambient temperature, away from moisture and incompatible materials, as per safety guidelines.
What grade is available?
Available in technical grade; custom purity levels may be requested.
Can Molekula supply this in bulk?
Yes, Molekula can supply 1-Naphthylamine-7-sulfonic Acid in bulk quantities upon request.
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.