Molekula
Sulfanilamide
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
Sulfanilamide is a sulfonamide antibiotic used in pharmaceuticals and chemical synthesis. It functions as a competitive inhibitor of bacterial folic acid synthesis. Available in powder form with a molecular weight of 172.20 g/mol, CAS number 63-74-1, and molecular formula H2NC6H4SO2NH2. Store at ambient temperatures. Signal word: Warning. Molekula supplies Sulfanilamide 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.
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500 g — £68.50 per pack ex VAT · £82.20 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 or light yellow crystalline powder |
| Melting Point | 164.5-166.5℃ |
| Heavy metals | ≤10 ppm |
| Identification | Conforms to reference |
| Loss on Drying | ≤0.5% |
| Specification | Conforms to EP specification |
| Chloride (Cl-) | ≤350 ppm |
| Assay | ≥99.0% |
| Residue on Ignition | ≤0.1% |
| Ferric salt | ≤40 ppm |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | Crystals |
| Melting Point | 165.5 °C |
| Vapour Pressure | 0.0000073 mmHg |
| pKa | pKa = 10.6 (at 20 °C) |
| log P (octanol/water) | -0.62 |
Source: PubChem CID 5333 (HSDB, DrugBank, Haz-Map)
Identification
| Property | Value |
|---|---|
| SKU | 23436681 |
| CAS Number | 63-74-1 |
| IUPAC Name | 4-aminobenzenesulfonamide |
| EC Number | 200-563-4 |
| Molecular Formula | H2NC6H4SO2NH2 |
| Molecular Weight | 172.20 |
| Exact Mass | 172.0306 |
| SMILES | C1=CC(=CC=C1N)S(=O)(=O)N |
| InChIKey | FDDDEECHVMSUSB-UHFFFAOYSA-N |
| InChI | InChI=1S/C6H8N2O2S/c7-5-1-3-6(4-2-5)11(8,9)10/h1-4H,7H2,(H2,8,9,10) |
| PubChem CID | 5333 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 29359095 |
| Tariff Code | 2935909099 |
Safety & GHS
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Health Hazard
GHS07
Hazard statements
- H303 May be harmful if swallowed
- H315 Causes skin irritation
- H319 Causes serious eye irritation
- H335 May cause respiratory irritation
Precautionary statements
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P302+352 IF ON SKIN: Wash with soap and water
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
- P332+313 IF skin irritation occurs: Get medical advice/attention
- P337+313 If eye irritation persists get medical advice/attention
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, 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
- 4-Aminobenzenesulfonamide
- Bacteramid
- p-Aminobenzenesulfonamide
- Prontosil Album
- Prontylin
- Sulfamine
- Sulfonamide
- Sulfonylamide
- Sulphanilamide
- Sulphonamide
Frequently asked questions
What is Sulfanilamide used for?
Sulfanilamide is primarily used as a sulfonamide antibiotic in pharmaceutical applications and as an intermediate in dye and pigment synthesis.
What is the chemical formula and molecular weight of Sulfanilamide?
The formula is H2NC6H4SO2NH2 with a molecular weight of 172.20 g/mol.
How should Sulfanilamide be stored?
Store at ambient temperature, protected from moisture and light.
What grade of Sulfanilamide does Molekula supply?
Molekula supplies Sulfanilamide in reagent grade.
Can Molekula supply Sulfanilamide in bulk?
Yes, Molekula can supply Sulfanilamide in bulk quantities—please contact us for pricing and availability.
What documentation comes with a Sulfanilamide 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.