Molekula
Sulfanilamide Melting Point Standard
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 Melting Point Standard is a high-purity chemical reference compound primarily used for calibrating and validating thermal analysis instruments like differential scanning calorimeters (DSC) and melting point apparatuses. Its well-defined melting point (165°C) makes it ideal for ensuring equipment accuracy in pharmaceutical, academic, and industrial quality control labs. This product has a CAS number of 63-74-1, with the molecular formula H2NC6H4SO2NH2 and a molecular weight of 172.20 g/mol. It is stable at ambient storage conditions and carries a signal word of *Warning* for safety handling. Molekula supplies Sulfanilamide Melting Point Standard 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
Pack sizes & pricing
Pricing on request — packs available from research to bulk quantities.
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Specifications
| Property | Value |
|---|---|
| Appearance | White crystalline granules or powder |
| Melting Point | 164.5 to 166.5 ° C |
| Heavy metals | max 10ppm |
| Loss on Drying | max 0.5% |
| Chloride (Cl-) | max 350ppm |
| Assay | 99% min |
| Acidity | Neutral |
| Residue on Ignition | max 0.1% |
| Mesh | min 100 mesh |
| Iron salts | max 40ppm |
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 | 90024032 |
| 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
-
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
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
- Prontylin
- Sulfamine
- sulfanilamide
- Sulfonamide
- Sulfonylamide
- Sulphanilamide
- Sulphonamide
Frequently asked questions
What is Sulfanilamide Melting Point Standard primarily used for?
It is used as a **primary melting point standard** for calibrating and validating thermal analysis instruments like DSC (Differential Scanning Calorimetry) and melting point apparatus.
What is the chemical formula and molecular weight of Sulfanilamide?
The formula is **H₂NC₆H₄SO₂NH₂**, and the molecular weight is **172.20 g/mol**.
How should Sulfanilamide Melting Point Standard be stored?
Store in a **dry, sealed container at ambient temperature**, away from direct sunlight and moisture.
What purity grade is available for this product?
Molekula supplies this as a **high-purity analytical standard**, typically ≥99.5% purity for thermal analysis applications.
Can Molekula supply Sulfanilamide in bulk quantities?
Yes, we offer bulk packaging options—please contact us for custom quantities and pricing.
What documentation comes with an order of Sulfanilamide Melting Point Standard?
Each order includes a **Certificate of Analysis (CoA)**, Safety Data Sheet (SDS), and batch-specific documentation for traceability.
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.