# NIOSH Pocket Guide to Chemical Hazards
Hexachloronaphthalene | CAS 1335-87-1
C10H2Cl6 | RTECS QJ7350000
Synonyms & Trade Names Halowax® 1014 | DOT ID & Guide
Exposure Limits | NIOSH REL: TWA 0.2 mg/m3 [skin]
OSHA PEL: TWA 0.2 mg/m3 [skin]
IDLH 2 mg/m3 | Conversion
Physical Description White to light-yellow solid with an aromatic odor.
MW: 334.9 | BP: 650-730°F | MLT: 279°F | Sol: Insoluble
VP: <1 mmHg | IP: ? |  | Sp.Gr: 1.78
Fl.P: NA | UEL: NA | LEL: NA |
Noncombustible Solid
Incompatibilities & Reactivities Strong oxidizers
Measurement Methods NIOSH S100 (II-2)
Personal Protection & Sanitation Skin: Prevent skin contact Eyes: Prevent eye contact Wash skin: When contaminated/Daily Remove: When wet or contaminated Change: Daily | First Aid (See procedures) Eye: Irrigate immediately Skin: Soap wash promptly Breathing: Respiratory support Swallow: Medical attention immediately
Respirator Recommendations NIOSH/OSHA Up to 2 mg/m3: (APF = 10) Any supplied-air respirator*/(APF = 50) Any self-contained breathing apparatus 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 Escape: (APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted organic vapor canister/Any appropriate escape-type, self-contained breathing apparatus
Exposure Routes inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms Acne-form dermatitis, nausea, confusion, jaundice, coma
Target Organs Skin, liver
See also: INTRODUCTION