Agent Name

Naphtha (petroleum), heavy alkylate

CAS Number


Major Category

Other Classes


Heavy alkylate naphtha (petroleum); Naphtha, petroleum, heavy alkylate; Naphtha, (petroleum), heavy alkylate; [ChemIDplus] Low boiling point modified naphtha; Aliphatic HC's, iso-paraffins; [ICSC] ALlkylate; HEAVY ALKYLATE/SSTD/SST; Isoparaffinic Hydrocarbon Solvent; [IUCLID] I-4002 No. 5 Tower bottoms; [Frontier El Dorado Refining MSDS] UN1268


Petroleum Distillates, Other


Colorless liquid; [ICSC] Odor of hydrocarbons; [Frontier El Dorado Refining MSDS]


Permitted for use as an inert ingredient in non-food pesticide products; [EPA]


TSCA Definition 2008: Obtained by distillation of the reaction products of isobutane with monoolefinic hydrocarbons and consisting of mainly branched chain saturated hydrocarbons with carbon numbers of C9 through C12 and boiling range of 150 deg C to 220 deg C; [ChemIDplus] Vapor is a mild eye irritant; Inhalation of high concentrations can cause CNS effects; Ingestion may cause aspiration into the lungs; [ICSC] Likely to be a moderate eye irritant; Prolonged or repeated skin contact causes irritation; Inhalation may cause nose, throat, and respiratory tract irritation and CNS depression; Harmful by ingestion (may cause lung damage by aspiration); May cause kidney and liver injury; [Frontier El Dorado Refining MSDS]

Exposure Assessment
Lethal Concentration

LC50 (rat) > 9,300 mg/m3/4hr

Explanatory Notes

For TLV, see Appendix H: Reciprocal Calculation Method for Certain Refined Hydrocarbon Solvent Vapors; [TLVs and BEIs] The Guide in the Emergency Response Guidebook is for "Petroleum distillates, n.o.s."

Adverse Effects

CNS Solvent Syndrome


Hepatotoxin, Secondary

Links to Other NLM Databases
Toxicity Information


Chemical Information

Search ChemIDplus

Related Information in HazMap

Occupational diseases associated with exposure to this agent:


Industrial Processes with risk of exposure: