2,3,5-Collidine
2,3,5-Collidine (CAS: 695-98-7), a pyridine derivative with the molecular formula C8H11N and a molecular weight of 121.18 g/mol, is supplied by TSS with an assay of 99%. This heterocyclic compound serves as a valuable building block in chemical synthesis. Its properties make it useful in various organic chemistry applications, including the preparation of more complex molecules.
- IUPAC
- 2,3,5-Trimethylpyridine
- Synonyms
- 695-98-7C8H11N2,3,5-Trimethylpyridine

Organic Synthesis Intermediate
2,3,5-Collidine is utilised as a versatile intermediate in the synthesis of diverse organic compounds. Its pyridine ring structure allows for participation in a variety of chemical transformations.
Heterocyclic Chemistry
As a substituted pyridine, it plays a role in heterocyclic chemistry research and development. It can be a precursor for creating novel heterocyclic systems with potential applications.
Specialty Chemical Production
This compound finds application in the production of specialty chemicals where a specific pyridine moiety is required. Its defined structure aids in precise chemical engineering.
| Molecular weight | 121.18 |
|---|---|
| Empirical formula | C8H11N |
| Assay | 99% |
| Boiling point | 184 °C(lit.) |
| Density | 0.931 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.508(lit.) |

Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | Eyeshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 73 °C / 163.4 °F |
| Transport (UN / ADR) | NA 1993 / PGIII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 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 2,3,5-Collidine used for?
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2,3,5-Collidine (CAS: 695-98-7) is primarily used as a building block and intermediate in organic synthesis and heterocyclic chemistry.
What is the CAS number and chemical formula for 2,3,5-Collidine?
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The CAS number for 2,3,5-Collidine is 695-98-7, and its empirical formula (Hill notation) is C8H11N.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 2,3,5-Collidine with a minimum assay of 99%. TSS does not represent this product as USP, BP, or EP grade.
How should 2,3,5-Collidine be handled safely?
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2,3,5-Collidine is classified with GHS07 signal word 'Warning' and hazard statements H315 (Causes skin irritation), H319 (Causes serious eye irritation), and H335 (May cause respiratory irritation). Handle with appropriate personal protective equipment, including eyeshields and gloves, and ensure adequate ventilation. Refer to the Safety Data Sheet for detailed guidance.
How is 2,3,5-Collidine packed, shipped, and exported?
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2,3,5-Collidine is carefully packed in compliance with international shipping regulations. TSS has extensive experience in exporting chemicals globally.
How can I request a sample or quote for 2,3,5-Collidine?
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To request a sample or a quotation for 2,3,5-Collidine, please contact our sales team through the website or via direct inquiry, providing your specific requirements.
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