September 2010
NIOSH Publication Number 2010-168c

Hexachloronaphthalene

Synonyms & Trade Names
Halowax® 1014
CAS No.
1335-87-1
RTECS No.
QJ7350000
DOT ID & Guide
Formula
C10H2Cl6
Conversion
IDLH
2 mg/m3
See: 1335871
Exposure Limits
NIOSH REL
: TWA 0.2 mg/m3 [skin]
OSHA PEL
: TWA 0.2 mg/m3 [skin]
Measurement Methods

NIOSH S100 (II-2)
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
Exposure Routes
inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms
Acne-form dermatitis, nausea, confusion, jaundice, coma
Target Organs
Skin, liver
Personal Protection/Sanitation
(See protection codes)
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

Important additional information about respirator selection

See also: INTRODUCTION   See ICSC CARD: 0997   See MEDICAL TESTS: 0113