Molekula
Pyridine-3-sulfonic acid
Pyridine-3-sulfonic acid is a heterocyclic organic compound used in pharmaceutical synthesis and as a reagent in organic chemistry. It appears as a white to pale yellow crystalline solid. CAS: 636-73-7, Molecular formula: C5H5NO3S, Molecular weight: 159.16 g/mol, Storage: Ambient, Signal word: Danger. Molekula supplies Pyridine-3-sulfonic acid from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Overview
Pyridine-3-sulfonic acid is a heterocyclic organic compound used in pharmaceutical synthesis and as a reagent in organic chemistry. It appears as a white to pale yellow crystalline solid. CAS: 636-73-7, Molecular formula: C5H5NO3S, Molecular weight: 159.16 g/mol, Storage: Ambient, Signal word: Danger. Molekula supplies Pyridine-3-sulfonic acid from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Specifications
| Property | Value |
|---|---|
| Appearance | White to off-white powder |
| Melting Point | ≥340℃ |
| Water | ≤0.4% |
| Assay | ≥98% |
| Mercury (Hg) | ≤100ppm |
| Identification (IR) | Conforms to Reference |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Flash Point | 67 C |
| Transport Class | 8 |
| Packing Group | III |
| Shelf Life | 24 months |
| Acidity | Acid |
Identification
| Property | Value |
|---|---|
| CAS Number | 636-73-7 |
| Molecular Formula | C5H5NO3S |
| Molecular Weight | 159.16 |
| SMILES | O=S(=O)(O)C=1C=NC=CC1 |
| EC / UN Number | 2585 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 29333961 |
| Tariff Code | 2933399990 |
Safety & GHS
-
Compressed Gas
GHS04
Hazard statements
- H314 (sub cat. 1B) Causes severe skin burns and eye damage
- H318 Causes serious eye damage
Precautionary statements
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- 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 Pyridine-3-sulfonic acid used for?
It is primarily used as an intermediate in the synthesis of pharmaceuticals and agrochemicals.
What is the chemical formula and molecular weight of Pyridine-3-sulfonic acid?
The formula is C5H5NO3S with a molecular weight of 159.16 g/mol.
How should Pyridine-3-sulfonic acid be stored?
It should be stored at ambient temperature, away from moisture and incompatible materials.
What grade is available for Pyridine-3-sulfonic acid?
It is available in technical grade; custom purity levels may be requested.
Can Molekula supply Pyridine-3-sulfonic acid in bulk?
Yes, Molekula can supply bulk quantities—please contact sales for pricing and availability.
What documentation comes with an order of Pyridine-3-sulfonic acid?
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.