Aniline

CAS: 62-53-3

Overview

Aniline (CAS 62-53-3 ), also known historically as Kyanol, is a primary aromatic amine that serves as a foundational building block across dye manufacturing, polymer chemistry, and rubber processing.

Its reactivity toward electrophiles and isocyanates makes it a critical intermediate in producing finished industrial materials rather than an end product in itself. In polyurethane production, aniline reacts with formaldehyde to form MDA.

This serves as the precursor to MDI, one of the highest-volume isocyanates used in rigid foam and elastomer manufacturing. Textile and leather processors rely on aniline-derived dyes and azo pigments for stable coloration.

These pigments achieve deep, stable coloration on synthetic and natural fibers. Rubber compounders use aniline-based antioxidants and accelerators to extend service life in tires and industrial belts for heavy machinery.

In flame retardant formulations, aniline derivatives are incorporated into polymer matrices for wire, cable, and construction applications requiring fire performance compliance. This ensures safety across various industrial sectors.

Aniline is supplied as a clear to pale yellow liquid in bulk quantities, typically in drums, IBCs, and ISO tank containers. Technical grade is the dominant commercial specification for most buyers.

Purity levels are generally at 99% or higher for standard industrial use. Pharmaceutical-grade material is also available where aniline is required as a specified impurity reference standard for laboratory testing.

Physical Properties

Melting Point	-6.0 °C
Boiling Point	184.1 °C
Density	1.0217 g/cm³ @ Temp: 20 °C
Flash Point	76 °C
Appearance	Aniline is a clear, colorless, oily liquid that darkens on exposure to light; with a characteristic amine-like odor.
Color	APHA: ≤250
Odor	Sweet, amine-like odor detectable at 0.6 to 10 ppm
Form	Liquid
Water Solubility	36 g/L (20 ºC)
Vapor Pressure	0.7 mm Hg ( 25 °C)
Refractive Index	n 20/D 1.586(lit.)
pH	8.8 (36g/l, H2O, 20℃)
Log P	0.900

Safety & Handling

Danger GHS05 GHS06 GHS08 GHS09 GHS07 Hazard Statements H227 Combustible liquid H301 Toxic if swallowed H302 Harmful if swallowed H311 Toxic in contact with skin H315 Causes skin irritation H317 May cause an allergic skin reaction H318 Causes serious eye damage H319 Causes serious eye irritation H330 Fatal if inhaled H331 Toxic if inhaled H332 Harmful if inhaled H341 Suspected of causing genetic defects H350 May cause cancer H351 Suspected of causing cancer H361 Suspected of damaging fertility or the unborn child 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 H301+H311+H331 Toxic if swallowed, in contact with skin 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. P262 Do not get in eyes, on skin, or on clothing. 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. P272 Contaminated work clothing should not be allowed out of the workplace. P273 Avoid release to the environment. P280 Wear protective gloves/protective clothing/eye protection/face protection. P284 In case of inadequate ventilation wear respiratory 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. P320 Specific treatment is urgent (see … on this label). 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+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. P333+P317 Get emergency medical help. P337+P317 If eye irritation persists: Get medical advice/attention. Get emergency medical help. P361+P364 Take off immediately all contaminated clothing and wash it before reuse. 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. P305+P354+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	29214110
UN Number	1547
ADR Class	6.1
Packing Group	II
Storage Class	6.1A - Combustible acute toxic Cat. 1 and 2 very toxic hazardous materials
WGK (Germany)	2

Other Names

Industries

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