CDC logoSafer Healthier People  CDC HomeCDC SearchCDC Health Topics A-Z
NIOSH - National Institute for Occupational Safety and Health

Skip navigation links Search NIOSH  |  NIOSH Home  |  NIOSH Topics  |  Site Index  |  Databases and Information Resources  |  NIOSH Products  |  Contact Us

 

NIOSH Pocket Guide to Chemical Hazards

September 2005

Pentachloronaphthalene

CAS
1321-64-8

C10H3Cl5

RTECS
QK0300000
Synonyms & Trade Names

Halowax® 1013; 1,2,3,4,5-Pentachloronaphthalene
DOT ID & Guide

Exposure
Limits

NIOSH REL: TWA 0.5 mg/m3 [skin]
OSHA PEL: TWA 0.5 mg/m3 [skin]
IDLH
Unknown See: 1321648 See: Appendix F
Conversion
Physical Description
Pale-yellow or white solid or powder with an aromatic odor.
MW: 300.4
BP: 636°F
MLT: 248°F
Sol: Insoluble
VP: <1 mmHg
IP: ?

Sp.Gr: 1.67
Fl.P: NA
UEL: NA
LEL: NA

Noncombustible Solid
Incompatibilities & Reactivities

Strong oxidizers
Measurement Methods
NIOSH S96 (II-2)
See: NMAM or OSHA Methods
Personal Protection & Sanitation
(See protection codes)
Skin: Prevent skin contact
Eyes: Prevent eye contact
Wash skin: When contaminated
Remove: When wet or contaminated
Change: Daily

First Aid
(See procedures)
Eye: Irrigate immediately
Skin: Soap promptly/molten flush immediately
Breathing: Respiratory support
Swallow: Medical Attention immediately
Respirator Recommendations
(See Appendix F) NIOSH/OSHA
Up to 5 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 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
Important additional information about respirator selection
Exposure Routes
inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms
Headache, lassitude (weakness, exhaustion), dizziness, anorexia; pruritus, acne-form skin eruptions; jaundice, liver necrosis
Target Organs
Skin, liver, central nervous system
See also: INTRODUCTION   See ICSC CARD: 0935   See MEDICAL TESTS: 0177

NIOSH Home
 |  NIOSH Search  | Site Index  | Topic List | Contact Us