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Chemical Sampling Information (CSI)
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General Description

Synonyms: Aliphatic petroleum naphtha; Petroleum naphtha; Rubber solvent

OSHA IMIS Code Number: 2037

Related Chemical Abstracts Service (CAS) Registry Number: 8002-05-9 (Petroleum distillates [naphtha])

NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: SE7449000

Department of Transportation Regulation Number (49 CFR 172.101) and 2012 Emergency Response Guidebook [4 MB PDF, 392 pages]: 1268 128

NIOSH Pocket Guide to Chemical Hazards - Petroleum Distillates (Naphtha): Physical description, chemical properties, potentially hazardous incompatibilities, and more


Exposure Limits and Health Effects

Exposure Limit

Limit Values

HE Codes

Health Factors and Target Organs

OSHA Permissible Exposure Limit (PEL) - General Industry
See 29 CFR 1910.1000 Table Z-1

500 ppm
(2,000 mg/m3)
TWA

HE8

Dizziness, headache, anesthesia

HE16

Irritation of the eyes, nose, and throat

HE11

Death by vascular damage and pulmonary edema

OSHA PEL - Construction Industry
See 29 CFR 1926.55 Appendix A

The composition of these materials varies greatly, and thus, a single TLV for all types of these materials is no longer applicable. The content of benzene, other aromatics, and additives should be determined in order to arrive at the appropriate TLV.

OSHA PEL - Shipyard Employment
See 29 CFR 1915.1000 Table Z-Shipyards

The composition of these materials varies greatly, and thus, a single TLV for all types of these materials is no longer applicable. The content of benzene, other aromatics, and additives should be determined in order to arrive at the appropriate TLV.

National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL)

350 mg/m3 TWA

1,800 mg/m3 Ceiling
(15 minutes)

HE7

Dizziness, drowsiness, headache, nausea

HE16

Irritation of the eyes, throat, and skin

American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value (TLV)

TLV was withdrawn in 2009.

 

CAL/OSHA PEL

400 ppm
(1,600 mg/m3) TWA
(rubber solvent, naphtha)

 

 

National Toxicology Program (NTP) carcinogenic classification: Not listed

International Agency for Research on Cancer (IARC) carcinogenic classification: Group 3 [62 KB PDF, 20 pages] (not classifiable as to its carcinogenicity to humans [crude oil]); Group 3 [2 MB PDF, 35 pages] (not classifiable as to its carcinogenicity to humans [petroleum solvents, including rubber solvent])

U.S. Environmental Protection Agency (EPA) carcinogenic classification: Not listed

EPA Inhalation Reference Concentration (RfC): Not established

Agency for Toxic Substances and Disease Registry (ATSDR) Inhalation Minimal Risk Level (MRL): Not established

NIOSH Immediately Dangerous to Life or Health (IDLH) concentration: 1,100 ppm (10% LEL)

Notes on Other Potential Health Effects

  1. Petroleum distillates are combustible (NIOSH/IPCS 2001).
  2. This mixture may contain n-hexane, which is metabolized to the neurotoxin 2,5-hexanedione (see hexane) (Creaser et al. 1983; Ono et al. 1982).
  3. Exposure to petroleum distillates may increase the risk of developing undifferentiated connective tissue disease (UCTD) (Lacey et al. 1999).

Date Last Revised: 9/6/2012

Literature Basis

Monitoring Methods used by OSHA

Laboratory Sampling/Analytical Method:

  • sampling media: Charcoal Tube (100/50 mg sections, 20/40 mesh)
    analytical solvent: Carbon Disulfide
    alternate analytical solvent: (99:1) Carbon Disulfide: Dimethylformamide
    maximum volume: 3 Liters
    maximum flow rate: 0.2 L/min
    current analytical method: Gas Chromatography; GC/FID
    method reference: OSHA Analytical Method OSHA Analytical Method (OSHA 48)
    method classification: Fully Validated

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