| Agent Name |
Naphtha (coal tar) |
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| Alternative Name |
Rubber solvent |
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| CAS Number |
8030-30-6 |
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| Major Category |
Solvents |
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| Synonyms |
Benzine; Light ligroin; Mineral spirits; Mineral thinner; Petroleum benzin; Petroleum distillates (naphtha); Petroleum naphtha; Rubber solvent (Naphtha); Solvent naphtha; White spirits; Petroleum ether; [CHEMINFO] |
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| Category |
Refined Petroleum |
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| Description |
Reddish-brown, mobile liquid with an aromatic odor; [NIOSH] |
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| Sources/Uses |
Used as a rubber, adhesive, and coating solvent; "A typical rubber solvent is a mixture of hydrocarbons. It has the chemical composition: 41.4% paraffins, 53.6% naphthalenes (monocycloparaffins), 1.5% benzene, 3.4% alkyl benzenes, and 0.1% olefins." [ACGIH] Separated from coal tar by distallation; "Contains naphthalene, acenaphthene, methylnaphthalenes, fluorene, phenol, cresols, pyridine, picolines, among other substances." [CAMEO] |
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| Comments |
Motor incoordination occurs in rats and dogs exposed to concentrations of 5300 ppm. [ACGIH] Inhalation of vapor can cause CNS depression; [CAMEO] |
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| Exposure Assessment |
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| Skin Designation (ACGIH) |
No |
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| TLV (ACGIH) |
400 ppm |
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| PEL (OSHA) |
100 ppm |
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| IDLH (NIOSH) |
1000 ppm |
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| Excerpts from Documentation for IDLHs |
Other human data: Acute exposure to 430 ppm has been reported to cause only slight eye and throat irritation [Carpenter et al. 1975]. |
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| Lethal Concentration |
LCLo (rats) = 1,600 ppm/6H |
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| Explanatory Notes |
See 2008 Notice of Intended Changes; [ACGIH] IDLH = 10'% LEL (lower explosive limit) Flash point is > 100 deg F; [CAMEO] |
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| Flammability (NFPA) |
2: high ambient temperature required |
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| Adverse Effects |
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| Neurotoxin |
CNS Solvent Syndrome |
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| Links to Other NLM Databases |
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| Health Studies |
Human Health Effects from Hazardous Substances Data Bank: NAPHTHA
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