o-Toluidine
o-Toluidine (CAS: 95-53-4, Formula: CH3C6H4NH2, MW: 107.15) is a primary aromatic amine. This colourless to pale yellow liquid is essential in organic synthesis, serving as a key intermediate. It is recognised for its utility in the development of dyes, agricultural chemicals, and pharmaceuticals. Tech Serve Solutions supplies o-Toluidine with a purity of 98%, supporting research and industrial chemical processes.
- IUPAC
- 2-Aminotoluene,2-Methylaniline
- Synonyms
- 2-Aminotoluene2-Methylaniline

Diagnostic Reagent
o-Toluidine has been historically utilised in the determination of glucose levels in biological samples, contributing to diagnostic methodologies in biochemistry.
Polymer Synthesis
It serves as a precursor in the synthesis of conductive polymers, such as poly(o-toluidine), and composite materials, finding applications in materials science and electronics.
Organic Synthesis Intermediate
As a versatile building block, o-Toluidine is employed in the synthesis of various complex organic molecules, including dyes and pharmaceutical intermediates.
| Molecular weight | 107.15 |
|---|---|
| Linear formula | CH3C6H4NH2 |
| Assay | 98% |
| Boiling point | 199-200 °C(lit.)89-90 °C/11 mmHg(lit.) |
| Density | 1.008 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.572(lit.) |
| Concentration | 0.6 M in glacial acetic acid |
| Melting point | −28 °C(lit.) |
| Vapour pressure | 0.26 mmHg (25 °C) |
| Vapour density | 3.7 (vs air) |
| Autoignition temp | 899 °F |
| Storage temperature | 2-8°C |
| Contains / stabiliser | thiourea as stabilizer |
| Application | o-Toluidine was used in determination of glucose in biological materials1. It was used as precursor in the synthesis of poly(o-toluidine) and copper nanoparticle composite material2. |



Hazard statements
- H301Toxic if swallowed
- H319Causes serious eye irritation
- H331Toxic if inhaled
- H350May cause cancer
- H400Very toxic to aquatic life
Precautionary statements
- P201Obtain special instructions before use
- P261Avoid breathing dust, fume, gas or vapours
- P273Avoid release to the environment
- P301IF SWALLOWED
- P305IF IN EYES
- P311Call a POISON CENTER or doctor
| Protective equipment | Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 85 °C / 185 °F |
| Transport (UN / ADR) | UN 1708 6.1 / PGII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | T,N |
| Risk statements (R) | 45-23/25-36-50 |
| Safety statements (S) | 53-45-61 |
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 used for?
+
o-Toluidine is used in the determination of glucose in biological materials and as a precursor in the synthesis of polymers like poly(o-toluidine).
What is the CAS number and chemical formula for o-Toluidine?
+
The CAS number for o-Toluidine is 95-53-4, and its chemical formula is CH3C6H4NH2.
What grade and purity does Tech Serve Solutions supply?
+
Tech Serve Solutions supplies o-Toluidine with an assay of 98%. We do not represent this product as USP, BP, or EP grade unless explicitly stated in the product documentation.
How should o-Toluidine be handled safely?
+
o-Toluidine is a hazardous substance. It is toxic if swallowed, inhaled, or in contact with skin, causes serious eye irritation, and is suspected of causing cancer. Handle with appropriate personal protective equipment, including eyeshields, gloves, and a suitable respirator. Ensure good ventilation and avoid release into the environment.
Is o-Toluidine a controlled substance?
+
Based on the provided data, o-Toluidine is classified with hazard codes T (Toxic) and N (Dangerous for the environment), with specific hazard statements H301, H331, H350, and H400. It is UN 1708, Class 6.1, PG II, indicating significant regulatory and handling requirements. It is not explicitly listed as a scheduled controlled substance in this data.
How is o-Toluidine packed, shipped, and exported?
+
o-Toluidine is packed and shipped according to international regulations for hazardous materials, including UN 1708 classification. Tech Serve Solutions is experienced in exporting fine chemicals globally.
How can I request a quote or sample of o-Toluidine?
+
To request a quote or sample of o-Toluidine, please contact our sales team through the website or by phone. Provide your contact details and the quantity required.
▶ Related products

1-(2-Fluorobenzyl)piperazine
C11H15FN2
Chemical Synthesis
1-(2-Fluorophenyl)biguanide hydrochloride
Chemical Synthesis

1-(2-Fluorophenyl)cyclopropanecarboxylic acid
C10H9FO2
Chemical Synthesis
1-(2-Fluorophenyl)piperazine
C10H13FN2
Chemical Synthesis
1-(2-Fluorophenyl)piperazine monohydrochloride
C10H13FN2 · HCl
Chemical Synthesis
1-(2-Furoyl)-1H-benzotriazole
C11H7N3O2
Chemical Synthesis
1-(2-Furoyl)piperazine
C9H12N2O2
Chemical Synthesis
1-(2-Hydroxy-5-methylphenyl)-3-phenyl-1,3-propanedione
Chemical Synthesis
▶ Explore more

3-Methyl-1,5-di-p-tolyl-1,4-pentazadiene
Chemical Synthesis

3-Methyl-1,5-pentanediol
Chemical Synthesis

3-Methyl-1-(2-methylphenyl)-1H-pyrazol-5-amine
C11H13N3
Chemical Synthesis
3-Methyl-1-(3′-sulfoamidophenyl)-5-pyrazolone
C10H11N3O3S
Chemical Synthesis