Agent Name

Naphtha (petroleum), heavy thermal cracked

CAS Number

64741-83-9

Formula

Unspecified

Major Category

Solvents

Synonyms

Heavy thermal cracked naphtha; Naphtha (petroleum), thermal cracked; Naphtha, petroleum, heavy thermal cracked; Heavy thermally cracked naphtha; [ChemIDplus] Harzol 1-4; HTN; Koker-Naphtha; MEROXATA; Naphtha; TGI NAFTA (UNTR.); Visbreaker-Benzin; [IUCLID] Heavy Coker Naphtha; Heavy Thermocracked Naphtha; Thermocracked naphtha, Heavy Coker; [Hess MSDS]

Category

Petroleum, Refined

Description

Colorless to slightly yellow liquid with a strong hydrocarbon odor; [Hess MSDS]

Sources/Uses

Used in chemical synthesis, petroleum refining, as a fuel, and in gasoline blending; [IUCLID] Used to make rubber, large scale and fine chemicals, in coatings, cleaning agents, and as a fuel; [ExPub: ECHA REACH Registrations]

Comments

"TSCA Definition 2008: A complex combination of hydrocarbons from distillation of the products from a thermal cracking process. It consists predominantly of unsaturated hydrocarbons having carbon numbers predominantly in the range of C6 through C12 and boiling in the range of approximately 65.degree.C to 220.degree.C (148.degree.F to 428.degree.F)." [ChemIDplus] Not a skin sensitizer in Buehler test of guinea pigs; No systemic effects observed in females (hydrocarbon nephropathy in males) in 21-day inhalation study of rats at concentrations up to 9,880 mg/m3 for 6hrs/day; Severe skin irritation but no systemic effects observed in 28-day dermal study of rabbits at doses up to 2,000 mg/kg; [IUCLID] An eye and mucous membrane irritant; Inhalation may cause anesthetic and other CNS effects; An aspiration hazard by ingestion (may cause lung injury); Chronic exposure may cause injury to liver, kidney, blood, nervous system, and skin; [Hess MSDS]

Exposure Assessment
Lethal Concentration

LC (rat) > 5,000 mg/m3/4hr

Adverse Effects
Neurotoxin

CNS Solvent Syndrome

Hepatotoxin

Hepatotoxin, Secondary

IARC Carcinogen

Probable Carcinogen

Links to Other NLM Databases
Toxicity Information

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Chemical Information

Search ChemIDplus

Related Information in HazMap
Diseases

Occupational diseases associated with exposure to this agent:

Processes

Industrial Processes with risk of exposure: