NIOSH Pocket Guide to Chemical Hazards

Hexachloronaphthalene CAS 1335-87-1
C10H2Cl6 RTECS QJ7350000
Synonyms & Trade Names
Halowax® 1014
DOT ID & Guide
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

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