Pentaborane |
Synonyms & Trade Names Pentaboron nonahydride |
CAS No. 19624-22-7 |
RTECS No. RY8925000 |
DOT ID & Guide 1380 135 |
FormulaB5H9 |
Conversion 1 ppm = 2.58 mg/m3 |
IDLH 1 ppm
See: 19624227 |
Exposure Limits NIOSH REL: TWA 0.005 ppm (0.01 mg/m3) ST 0.015 ppm (0.03 mg/m3)
OSHA PEL†: TWA 0.005 ppm (0.01 mg/m3) |
Measurement Methods
None available
See: NMAM or OSHA Methods |
Physical Description Colorless liquid with a pungent odor like sour milk. |
MW: 63.1 |
BP: 140°F |
FRZ: -52°F |
Sol: Reacts |
VP: 171 mmHg |
IP: 9.90 eV |
Sp.Gr: 0.62 |
Fl.P: 86°F |
UEL: ? |
LEL: 0.42% |
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| Class IC Flammable Liquid: Fl.P. at or above 73°F and below 100°F. |
Incompatibilities & Reactivities Oxidizers, halogens, water, halogenated hydrocarbons [Note: May ignite SPONTANEOUSLY in moist air. Corrosive to natural rubber. Hydrolyzes slowly with heat in water to form boric acid.] |
Exposure Routes inhalation, skin absorption, ingestion, skin and/or eye contact |
Symptoms irritation eyes, skin; dizziness, headache, drowsiness, incoordination, tremor, convulsions, behavioral changes; tonic spasm face, neck, abdominal, limbs |
Target Organs Eyes, skin, central nervous system |
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Personal Protection/Sanitation (See protection codes)
Skin: Prevent skin contact
Eyes: Prevent eye contact
Wash skin: When contaminated
Remove: When wet (flammable)
Change: No recommendation
Provide: Eyewash, Quick drench |
First Aid (See procedures)
Eye: Irrigate immediately
Skin: Soap wash immediately
Breathing: Respiratory support
Swallow: Medical attention immediately |
Respirator Recommendations NIOSH/OSHA Up to 0.05 ppm:
(APF = 10) Any supplied-air respirator Up to 0.125 ppm:
(APF = 25) Any supplied-air respirator operated in a continuous-flow mode Up to 0.25 ppm:
(APF = 50) Any supplied-air respirator that has a tight-fitting facepiece and is operated in a continuous-flow mode
(APF = 50) Any self-contained breathing apparatus with a full facepiece
(APF = 50) Any supplied-air respirator with a full facepiece Up to 1 ppm:
(APF = 1000) Any supplied-air respirator operated in a pressure-demand or other positive-pressure mode 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 canister providing protection against the compound of concern
Any appropriate escape-type, self-contained breathing apparatus
Important additional information about respirator selection |
| See also: INTRODUCTION See ICSC CARD: 0819
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