o-Toluidine hydrochloride
o-Toluidine hydrochloride (CAS 636-21-5), with the molecular formula CH3C6H4NH2 · HCl and a molecular weight of 143.61 g/mol, is a key organic building block. This amine salt is primarily utilised in chemical synthesis and as an intermediate in the production of various organic compounds. Tech Serve Solutions offers this chemical with a high purity assay of 98%.
- IUPAC
- 2-Methylaniline hydrochloride
- Synonyms
- 2-Methylaniline hydrochloride2-Aminotoluene hydrochloride

Chemical Synthesis Intermediate
o-Toluidine hydrochloride serves as a versatile intermediate in organic synthesis. It is employed in the preparation of more complex molecules and speciality chemicals.
Building Block for Organic Compounds
As an organic building block, this compound facilitates the introduction of the o-toluidine moiety into various molecular structures, supporting diverse research and development efforts.
Nitrogen Compound Precursor
Its structure makes it a valuable precursor for synthesising a range of nitrogen-containing organic compounds utilised across different chemical sectors.
| Molecular weight | 143.61 |
|---|---|
| Linear formula | CH3C6H4NH2 · HCl |
| Assay | 98% |
| Melting point | 215-217 °C(lit.) |


Hazard statements
- H312Harmful in contact with skin
- H350May cause cancer
Precautionary statements
- P201Obtain special instructions before use
- P280Wear protective gloves, clothing and eye/face protection
- P308IF exposed or concerned
| Protective equipment | Eyeshields, Gloves, type P2 (EN 143) respirator cartridges |
|---|---|
| Transport (UN / ADR) | UN 3077 9 / PGIII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | T |
| Risk statements (R) | 45-20/21/22 |
| Safety statements (S) | 53-36/37/39-45 |
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 o-Toluidine hydrochloride used for?
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o-Toluidine hydrochloride (CAS 636-21-5) is primarily used as an intermediate in chemical synthesis and as an organic building block for creating more complex nitrogen-containing compounds.
What are the CAS number and formula for o-Toluidine hydrochloride?
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The CAS number for o-Toluidine hydrochloride is 636-21-5, and its linear formula is CH3C6H4NH2 · HCl.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies o-Toluidine hydrochloride with an assay of 98%. This product is not represented as USP, BP, EP, or any other pharmacopoeia grade.
How should o-Toluidine hydrochloride be handled?
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o-Toluidine hydrochloride is classified as dangerous. It is harmful if swallowed, in contact with skin or if inhaled, and is suspected of causing cancer. Handle with appropriate personal protective equipment including eyeshields, gloves, and a type P2 respirator. Ensure good ventilation and avoid exposure. Refer to the Safety Data Sheet for full details.
Is o-Toluidine hydrochloride a controlled substance?
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The provided data does not indicate that o-Toluidine hydrochloride is a controlled substance. However, users should verify local regulations.
How is o-Toluidine hydrochloride shipped and exported?
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o-Toluidine hydrochloride is shipped and exported according to international regulations for hazardous materials, identified under UN 3077, Class 9, Packing Group III.
How can I request a sample or quote for o-Toluidine hydrochloride?
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To request a sample or a quote for o-Toluidine hydrochloride, please contact the Tech Serve Solutions sales team through our website or by calling us directly.
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