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Pentachloronaphthalene

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Synonyms & Trade Names
Halowax® 1013, 1,2,3,4,5-Pentachloronaphthalene
CAS No.
1321-64-8
RTECS No.
QK0300000
DOT ID & Guide
Formula
C₁₀H₃Cl₅
Conversion
IDLH
See Appendix F
See: 1321648
Exposure Limits
NIOSH REL
TWA 0.5 mg/m3 [skin]
OSHA PEL
TWA 0.5 mg/m3 [skin]
Measurement Methods
NIOSH S96 (II-2)
See: NMAM or OSHA Methods
Physical Description
Pale-yellow or white solid or powder with an aromatic odor.
Molecular Weight
300.4
Boiling Point
636°F
Melting Point
248°F
Solubility
Insoluble
Vapor Pressure
<1 mmHg
Ionization Potential
?
Specific Gravity
1.67
Flash Point
NA
Upper Explosive Limit
NA
Lower Explosive Limit
NA
Noncombustible Solid
Incompatibilities & Reactivities
Strong oxidizers
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
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

See also
INTRODUCTION   ICSC CARD: 0935   MEDICAL TESTS: 0177
Page last reviewed: October 30, 2019
Content source: National Institute for Occupational Safety and Health