Agent Name

Coal tar

CAS Number

8007-45-2

Major Category

Other Classes

Synonyms

Carbo-cort; Coal tar extract; Coal tar ointment; Coal tar solution USP; Coal tars; Coke-oven tar; Coking tar; Crude coal tar; Estar (skin treatment); Impervotar; KC 261; Lavatar; Picis carbonis; Pixalbol; Polytar bath; RT 7 (coal tar); Tar, coal; Tar, coking; Tarcron 180; Tarcron 180L; Tarcron 230; Zetar; [ChemIDplus]

Category

Polycyclic Aromatic Hydrocarbons

Description

Brownish to black, thick liquid/semisolid substance with naphthalene-like odor; [HSDB] 0-2% benzene, toluene, & xylene; 16-18% phenols, cresols, & naphthalene; 8-10% naphthalene derivatives; 16-20% anthracene oils; and 50% pitch; [CHEMINFO MSDS]

Sources/Uses

Used in surface coatings and sealants (walls, insulation, pipes, roofs, and roads); Used to produce plastics, solvents, dyes, and drugs for psoriasis; Used as a fuel in open hearth furnaces in the steel industry; [HSDB]

Comments

May cause first degree burns after short exposure and second degree burns after longer contact; [CHRIS] NIOSH considers coal tar, coal tar pitch, and creosote to be coal tar products. Wood creosote (8021-39-4) is derived from the distillation of beechwood tar; it is yellow, transparent, and chemically distinct from coal tar creosote. [ATSDR ToxProfiles] Chronic exposure to coal tar and its vapors is associated with an increased risk for cancer of the lungs, kidneys, skin, and bladder. Coal tar is a potential photosensitizer. [CHEMINFO MSDS] Coal tar creosote (8001-58-9) and Coal tar pitch volatiles 65996-93-2) are covered separately. Coal-tar pitch is classified as 1 (IARC) and K (NTP); [Guide to Occupational Exposure Values] See "Coal-tar distillation."

Exposure Assessment
Explanatory Notes

For occupational exposure limits, see "Coal tar pitch volatiles."

Flammability (NFPA)

2: High ambient temperature required

Adverse Effects
Dermatotoxin

Contact Dermatitis, Photoirritant

IARC Carcinogen

Known Carcinogen

NTP Carcinogen

Human Carcinogen

Links to Other NLM Databases
Health Studies

Human Health Effects from Hazardous Substances Data Bank:

Toxicity Information

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Chemical Information

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Biomedical References

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Related Information in HazMap
Diseases

Occupational diseases associated with exposure to this agent:

Processes

Industrial Processes with risk of exposure: