o-toluidine

CAS: 95-53-4

Overview

o-Toluidine (CAS 95-53-4 ), also known as o-tolylamine, is an aromatic amine used as a chemical intermediate in the synthesis of dyes, pigments, and curing agents.

It serves as a building block in manufacturing processes where a reactive amine group is required to produce more complex organic compounds for industrial use.

In the dye and pigment industry, this chemical is a key precursor in the production of azo dyes used to color textiles, leather, and paper substrates.

Printing ink formulations rely on pigments derived from these intermediates to achieve specific hue ranges in packaging applications and commercial printing processes.

It functions as a curing agent component and cross-linker in certain resin systems, contributing to the hardening of coatings and high-performance adhesives.

Personal care product manufacturers use derived colorants in formulations where specific synthetic dye chemistry is required for consumer goods and cosmetics.

The product is supplied as a liquid at ambient conditions, typically available in drum and IBC quantities for industrial buyers and large-scale manufacturing.

It is offered primarily in technical grade, with purity specifications commonly ranging from 99% and above to ensure consistent performance in chemical synthesis.

Physical Properties

Melting Point	-16.3 °C
Boiling Point	200.3 °C
Density	1.008 g/cm³ @ Temp: 20 °C
Flash Point	185 °F
Appearance	Light-yellow liquid, becomes reddishbrown on exposure to air and light. Soluble in alcohol and ether; very slightly soluble in water. Combustible.
Color	light yellow to light amber
Odor	Aromatic, aniline-like.
Form	liquid
Water Solubility	1.5 g/100 mL (25 ºC)
Vapor Pressure	0.26 mm Hg ( 25 °C)
Refractive Index	n 20/D 1.572(lit.)
pH	7.4 (H2O, 20℃)Aqueous solution
Log P	1.4 at 24.5℃

Safety & Handling

Danger GHS06 GHS08 GHS09 GHS07 Hazard Statements H227 Combustible liquid H301 Toxic if swallowed H302 Harmful if swallowed H312 Harmful in contact with skin H313 May be harmful in contact with skin H315 Causes skin irritation H316 Causes mild skin irritation H319 Causes serious eye irritation H331 Toxic if inhaled H332 Harmful if inhaled H336 May cause drowsiness or dizziness H340 May cause genetic defects H341 Suspected of causing genetic defects H350 May cause cancer H370 Causes damage to organs H372 Causes damage to organs through prolonged or repeated exposure H373 May causes damage to organs through prolonged or repeated exposure H400 Very toxic to aquatic life H410 Very toxic to aquatic life with long lasting effects H411 Toxic to aquatic life with long lasting effects H301+H331 Toxic if swallowed or if inhaled Precautionary Statements P203 Obtain, consult and follow expert instructions for use. P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking. P260 Do not breathe dust/fume/gas/mist/vapours/spray. P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P264 Wash … thoroughly after handling. P270 Do not eat, drink or smoke when using this product. P271 Use only outdoors or in a well-ventilated area. P273 Avoid release to the environment. P280 Wear protective gloves/protective clothing/eye protection/face protection. P316 Get emergency medical help immediately. P317 Get emergency medical help. P318 IF exposed or concerned, get medical advice. P319 Get medical advice/attention if you feel unwell. P321 Specific treatment (see … on this label). P330 Rinse mouth. P391 Collect spillage. P403 Store in a well-ventilated place. P405 Store locked up. P501 Dispose of contents/container in accordance with local regulations. P264+P265 Wash … thoroughly after handling. P301+P316 Get emergency medical help immediately. P301+P317 Get emergency medical help. P302+P317 Get emergency medical help. P302+P352 IF ON SKIN: Wash with plenty of water. P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing. P308+P316 Get emergency medical help immediately. P332+P317 Get emergency medical help. P337+P317 If eye irritation persists: Get medical advice/attention. Get emergency medical help. P362+P364 Take off contaminated clothing and wash it before reuse. P370+P378 Use … for extinction. P403+P233 Store in a well-ventilated place. Keep container tightly closed. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Trade & Regulatory

HS Code	29214300
UN Number	2920
ADR Class	8
Packing Group	I
Storage Class	6.1A - Combustible acute toxic Cat. 1 and 2 very toxic hazardous materials
WGK (Germany)	3

Other Names

Industries

Printing & Packaging Textile, Leather & Paper Personal Care & Cosmetics