Pyridine hydrochloride
Pyridine hydrochloride (CAS: 628-13-7), with the molecular formula C5H5N · HCl and a molecular weight of 115.56 g/mol, is a vital chemical compound utilised in synthesis. It serves as a valuable building block in organic chemistry, particularly within the realm of heterocyclic compounds. Its properties make it a useful reagent for various chemical transformations, contributing to advancements in chemical research and development.
- IUPAC
- Pyridinium chloride

Organic Synthesis Reagent
Pyridine hydrochloride is employed as a reagent and building block in various organic synthesis pathways. It is particularly useful for introducing the pyridine moiety or acting as a source of pyridinium ions in reactions.
Heterocyclic Chemistry
As a derivative of pyridine, this compound is a key component in the synthesis of more complex heterocyclic structures. These structures are often foundational for pharmaceuticals and agrochemicals.
Chemical Research
It is used in laboratory settings for research and development purposes, facilitating the exploration of new chemical reactions and the creation of novel compounds.
| Molecular weight | 115.56 |
|---|---|
| Empirical formula | C5H5N · HCl |
| Assay | 98% |
| Boiling point | 222-224 °C(lit.) |
| Solubility | ethanol: soluble50 mg/mL, clear, colorless to light yellow |
| Melting point | 145-147 °C(lit.) |

Hazard statements
- H302Harmful if swallowed
- H315Causes skin irritation
- H319Causes serious eye irritation
- H332Harmful if inhaled
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 20/21/22-36/37/38 |
| Safety statements (S) | 26-36 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Pyridine hydrochloride used for?
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Pyridine hydrochloride is used as a building block in chemical synthesis, particularly in heterocyclic chemistry and general organic synthesis research.
What is the CAS number and formula for Pyridine hydrochloride?
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The CAS number for Pyridine hydrochloride is 628-13-7 and its empirical formula (Hill notation) is C5H5N · HCl.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Pyridine hydrochloride with an assay of 98%. This product is intended for research and technical use; TSS does not represent it as USP, BP, or EP grade.
What are the safety considerations when handling Pyridine hydrochloride?
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Pyridine hydrochloride is classified with GHS07 symbol and a Warning signal word. It is harmful if swallowed, causes skin irritation, causes serious eye irritation, and is harmful if inhaled, and may cause respiratory irritation (H302-H315-H319-H332-H335). Appropriate personal protective equipment including a dust mask (type N95 US), eyeshields, and gloves should be worn. Handle in a well-ventilated area.
How is Pyridine hydrochloride packaged and shipped?
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Pyridine hydrochloride is packaged according to industry standards to ensure safe transit. Tech Serve Solutions exports fine chemicals, pharmaceutical intermediates, and laboratory reagents globally.
How can I request a quote or sample for Pyridine hydrochloride?
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To request a quote or sample, please contact the Tech Serve Solutions sales team through our website or designated contact channels.
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