4556-23-4
| Name | 4-Mercaptopyridine |
| CAS | 4556-23-4 |
| EINECS(EC#) | 224-926-1 |
| Molecular Formula | C5H5NS |
| MDL Number | MFCD00006422 |
| Molecular Weight | 111.16 |
| MOL File | 4556-23-4.mol |
Chemical Properties
| Appearance | Yellow to light yellow crystalline powder |
| Melting point | 182-189 °C |
| Boiling point | 194.0±13.0 °C(Predicted) |
| density | 1.161 (estimate) |
| refractive index | 1.5605 (estimate) |
| storage temp. | 0-6°C |
| solubility | DMSO, Methanol |
| form | Crystalline Powder |
| pka | pK1:1.43(＋1);pK2:8.86(0) (20°C) |
| color | Yellow to yellow-green or brown |
| InChI | InChI=1S/C5H5NS/c7-5-1-3-6-4-2-5/h1-4H,(H,6,7) |
| InChIKey | FHTDDANQIMVWKZ-UHFFFAOYSA-N |
| SMILES | C1=NC=CC(S)=C1 |
| Uses | |
| CAS DataBase Reference | 4556-23-4(CAS DataBase Reference) |
| NIST Chemistry Reference | 4-Pyridinethiol(4556-23-4) |
| Storage Precautions | Store under nitrogen |
Safety Data
| Symbol(GHS) |  GHS07 |
| Signal word | Warning |
| Hazard statements | H315-H319-H335 |
| Precautionary statements | P261-P264-P271-P280-P302+P352-P305+P351+P338 |
| Hazard Codes | Xi |
| Risk Statements | |
| Safety Statements | |
| WGK Germany | 3 |
| RTECS | UT8578000 |
| HS Code | 29333990 |
| Storage Class | 11 - Combustible Solids |
| Hazard Classifications | Eye Irrit. 2 Skin Irrit. 2 STOT SE 3 |