Synonyms & Trade NamesHalowax® [Tetrachloronaphthalene], Nibren wax [Tetrachloronaphthalene], Seekay wax [Tetrachloronaphthalene]
DOT ID & Guide
IDLHSee Appendix F
NIOSH RELTWA 2 mg/m3 [skin]
OSHA PELTWA 2 mg/m3 [skin]
Physical DescriptionColorless to pale-yellow solid with an aromatic odor.
Vapor Pressure<1 mmHg
Flash Point(oc) 410°F
Upper Exposive Limit?
Lower Explosive Limit?
Incompatibilities & ReactivitiesStrong oxidizers
Exposure Routesinhalation, skin absorption, ingestion, skin and/or eye contact
SymptomsAcne-form dermatitis; headache, lassitude (weakness, exhaustion), anorexia, dizziness; jaundice, liver injury
Target OrgansLiver, skin, central nervous system
Personal Protection/Sanitation(See protection codes)
Skin:Prevent skin contact
Eyes:Prevent eye contact
Wash skin:When contaminated
Remove:When wet or contaminated
First Aid(See procedures)
Skin:Soap wash immediately
Swallow:Medical attention immediately
(See Appendix F)
Up to 20 mg/m3:
(APF = 50) Any self-contained breathing apparatus with a full facepiece
(APF = 50) Any supplied-air respirator with a full facepiece
Emergency or planned entry into unknown concentrations or IDLH conditions:
(APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode
(APF = 10,000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode in combination with an auxiliary self-contained positive-pressure breathing apparatus
(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted organic vapor canister having an N100, R100, or P100 filter.
Click here for information on selection of N, R, or P filters.
Any appropriate escape-type, self-contained breathing apparatus
- Page last reviewed:April 11, 2016
- Page last updated:April 11, 2016
- Content source:
- National Institute for Occupational Safety and Health (NIOSH) Education and Information Division