NIOSH Pocket Guide to Chemical Hazards


CAS 309-00-2


RTECS IO2100000
Synonyms & Trade Names
1,2,3,4,10,10-Hexachloro-1,4,4a,5,8,8a-hexahydro-endo-1,4-exo-5,8-dimethanonaphthalene; HHDN; Octalene
DOT ID & Guide
2761 151


NIOSH REL: Ca TWA 0.25 mg/m3 [skin] See Appendix A
OSHA PEL: TWA 0.25 mg/m3 [skin]
IDLH Ca [25 mg/m3] See: 309002 Conversion
Physical Description
Colorless to dark-brown crystalline solid with a mild chemical odor. [Note: Formerly used as an insecticide.]
MW: 364.9
BP: Decomposes
MLT: 219°F
Sol: 0.003%
VP: 0.00008 mmHg
IP: ?

Sp.Gr: 1.60
Fl.P: NA

Noncombustible Solid, but may be dissolved in flammable liquids.
Incompatibilities & Reactivities
Concentrated mineral acids, active metals, acid catalysts, acid oxidizing agents, phenol
Measurement Methods
NIOSH 5502
See: NMAM or OSHA Methods
Personal Protection & Sanitation (See protection)
Skin: Prevent skin contact
Eyes: Prevent eye contact
Wash skin: When contaminated/Daily
Remove: When wet or contaminated
Change: Daily
Provide: Eyewash, Quick drench
First Aid (See procedures)
Eye: Irrigate immediately
Skin: Soap wash immediately
Breathing: Respiratory support
Swallow: Medical attention immediately
Important additional information about respirator selection
Respirator Recommendations NIOSH
At concentrations above the NIOSH REL, or where there is no REL, at any detectable concentration:
(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
(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
Exposure Routes inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms Headache, dizziness; nausea, vomiting, malaise (vague feeling of discomfort); myoclonic jerks of limbs; clonic, tonic convulsions; coma; hematuria (blood in the urine), azotemia; [potential occupational carcinogen]
Target Organs central nervous system, liver, kidneys, skin

Cancer Site [in animals: tumors of the lungs, liver, thyroid & adrenal glands]
See also: INTRODUCTION   See ICSC CARD: 0774   See MEDICAL TESTS: 0009