65996-92-1

Basic information

• Product Name: COAL TAR
• Synonyms: COAL TAR CRUDE;Coal Tar Pitch Volatiles (Benzene Soluble Fraction);Pitch, coal tar, high-temp.;Distillates (coal tar);CoalTarPitch;Pitch, coal tar, high temperature;Coal tar distillates.;Coal tar pitch volatiles.
• CAS NO: 65996-92-1
• Molecular Formula: C14H18O4CLN5
• Molecular Weight: 0
• EINECS: 266-028-2
• Product Categories: UVCBs-organic
• Mol File: 65996-92-1.mol
• Article Data: 0

Chemical Properties

• Boiling Point: 310-460℃ at 101kPa
• Appearance: /
• Density: 1.12g/cm3 at 20℃
• Vapor Pressure: 0.61-1070Pa at 20-142℃
• CAS DataBase Reference: COAL TAR(CAS DataBase Reference)
• NIST Chemistry Reference: COAL TAR(65996-92-1)
• EPA Substance Registry System: COAL TAR(65996-92-1)

Safety Data

• Hazard Codes: T
• Statements: 45
• Safety Statements: 53-45
• RIDADR: 1136
• HazardClass: 3.1
• PackingGroup: II
• Hazardous Substances Data: 65996-92-1(Hazardous Substances Data)

Usage

Description

Coal tar is a complex mixture of various substances derived from the distillation of coal, characterized by its dark color and viscous consistency. It is a by-product of coal processing and possesses unique properties that make it useful in a variety of applications.

Uses

Used in Pharmaceutical Industry:
Coal tar is used as a topical antieczematic agent for its anti-inflammatory and antipruritic properties, helping to alleviate skin conditions such as eczema and dermatitis.
Used in Cosmetic Industry:
Due to its potential to cause postinflammatory hyperpigmentation, coal tar may be utilized in cosmetic formulations to address skin discoloration and promote an even skin tone.

Reactivity Profile

Vigorous reactions, sometimes amounting to explosions, can result from the contact between aromatic hydrocarbons and strong oxidizing agents. They can react exothermically with bases and with diazo compounds. Substitution at the benzene nucleus occurs by halogenation (acid catalyst), nitration, sulfonation, and the Friedel-Crafts reaction.

Health Hazard

EYES: Redness, irritation, blurred vision. INHALATION: Nasal and respiratory irritation, fatigue, dizziness, weakness, headache, and possible cardiovascular collapse. INGESTION: Gastrointestinal irritation, nausea, vomiting, and diarrhea. SKIN: Can cause severe irritation, which, when accentuated by sunlight, may result in phototoxic burns.

Fire Hazard

Special Hazards of Combustion Products: Toxic gases, such as carbon monoxide, may be produced.

Safety Profile

A carcinogen. A flammable liquid. When heated to decomposition it emits acrid smoke and irritating vapors.

Potential Exposure

The coke-oven plant is the principal source of coal tar. The hot gases and vapors produced during the conversion of coal to coke are collected by means of a scrubber, which condenses the effluent into ammonia, water, crude tar, and other by-products. Crude tar is separated from the remainder of the condensate for refining and may undergo further processing. Employees may be exposed to pitch and creosote in metal and foundry operations; when installing electrical equipment; in construction, railway, utility; and briquette manufacturing.

Shipping

UN1136 Coal tar distillates, flammable, Hazard Class: 3; Labels: 3-Flammable liquid

Incompatibilities

Incompatible with strong oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids, oxoacids, epoxides. Phenols, such as creosote react as weak organic acids. Phenols and cresols are much weaker as acids than common carboxylic acids (phenol has pKa = 9.88). These materials are incompatible with strong reducing agents such as hydrides, nitrides, alkali metals, and sulfides. Flammable hydrogen gas is often generated, and the heat of the reaction may ignite the gas. Heat is also generated by the acid-base reaction between phenols and bases. Such heating may initiate polymerization of the organic compound. Phenols are sulfonated very readily (e.g., by concentrated sulfuric acid at room temperature). The reactions generate heat. Phenols are also nitrated very rapidly, even by dilute nitric acid

Waste Disposal

Dissolve or mix the material with a combustible solvent and burn in a chemical incinerator equipped with an afterburner and scrubber. All federal, state, and local environmental regulations must be observed.