Pyridine hydrochloride
Synonym(s):Pyridinium chloride
- CAS NO.:628-13-7
- Empirical Formula: C5H5N.ClH
- Molecular Weight: 115.56
- MDL number: MFCD00012802
- EINECS: 211-027-4
- SAFETY DATA SHEET (SDS)
- Update Date: 2025-03-17 18:28:27

What is Pyridine hydrochloride?
Chemical properties
white to tan crystals
The Uses of Pyridine hydrochloride
Pyridine Hydrochloride is the hydrochloride salt of pyridine, a basic six-membered heterocyclic ring. Pyridine is a base structure present in many biologically active compounds like the vitamins niaci n and pyridoxal. Pyridine is used in dehalogenation reactions and can be used as a base in condensation reactions.
The Uses of Pyridine hydrochloride
Pyridine Hydrochloride is the hydrochloride salt of pyridine, a basic six-membered heterocyclic ring. Pyridine is a base structure present in many biologically active compounds like the vitamins niacin and pyridoxal. Pyridine is used in dehalogenation reactions and can be used as a base in condensation reactions.
Preparation
Pyridine hydrochloride could be synthesized through the liquid-liquid synthesis method (pyridine and hydrochloric acid) and the gas-liquid synthesis method (pyridine and hydrogen chloride gas) respectively. The yield of the liquid-liquid synthesis method was 85% and the gas-liquid synthesis method was 92%.
Purification Methods
Crystallise the salt from CHCl3/EtOAc and wash it with Et2O. It is hygroscopic.[Beilstein 20 H 185, 20 I 57, 20 II 103, 20 III/IV 2230, 20/5 V 180.]
Properties of Pyridine hydrochloride
Melting point: | 145-147 °C(lit.) |
Boiling point: | 222-224 °C(lit.) |
Density | 1.1182 (rough estimate) |
refractive index | 1.5304 (estimate) |
Flash point: | 222-224°C |
storage temp. | Inert atmosphere,Room Temperature |
solubility | ethanol: soluble50mg/mL, clear, colorless to light yellow |
form | Crystals |
color | White to tan |
Water Solubility | 85 g/100 mL |
Sensitive | Hygroscopic |
BRN | 3615340 |
Stability: | Hygroscopic |
CAS DataBase Reference | 628-13-7(CAS DataBase Reference) |
EPA Substance Registry System | Pyridine hydrochloride (628-13-7) |
Safety information for Pyridine hydrochloride
Signal word | Warning |
Pictogram(s) |
![]() Exclamation Mark Irritant GHS07 |
GHS Hazard Statements |
H302:Acute toxicity,oral H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation |
Precautionary Statement Codes |
P302+P352:IF ON SKIN: wash with plenty of soap and water. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
Computed Descriptors for Pyridine hydrochloride
InChIKey | AOJFQRQNPXYVLM-UHFFFAOYSA-N |
New Products
1-Boc-4-cyanopiperidine tert-Butyl carbazate 1-(TERT-BUTOXYCARBONYL)-2-PYRROLIDINONE TETRABUTYLAMMONIUM CYANIDE TETRAHYDRO-2H-PYRAN-3-OL 3-Pyridineacrylic acid Nickel(II) perchlorate hexahydrate, 98% 4-Bromophenylacetonitrile, 95% 3-Bromo-4-fluoroaniline, 97% Sodium tetraborate decahydrate, 98% Palladium(II) acetate, trimer, Pd 99% 4-Bromo-2-chlorotoluene, 97% Tadalafil Clopidogrel bisulfate Sitagliptin Phosphate Monohydrate Cabergoline Fexofinadine HCl Etoricoxib 4-Amino Acetophenone 2-Chloro Acetophenone Amlodipine Base 2,3,5-Triiodobenzoic Acid Pyrrolidine Diiodo PentoxideRelated products of tetrahydrofuran

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