Potassium cyanide (as CN)
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CAS
151-50-8
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KCN
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RTECS
TS8750000
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Synonyms & Trade Names
Potassium salt of hydrocyanic acid
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DOT ID & Guide
1680 / 157 (solid)
3413 / 157 (solution)
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Exposure
Limits
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NIOSH REL*: C 5 mg/m3 (4.7 ppm) [10-minute] [*Note: The REL also applies to other cyanides (as CN) except Hydrogen cyanide.]
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OSHA PEL*: TWA 5 mg/m3 [*Note: The PEL also applies to other cyanides (as CN) except Hydrogen cyanide.]
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IDLH
25 mg/m3 (as CN)
See: cyanides
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Conversion
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Physical Description
White, granular or crystalline solid with a faint, almond-like odor.
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MW: 65.1
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BP: 2957°F
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MLT: 1173°F
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Sol(77°F): 72%
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VP: 0 mmHg (approx)
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IP: NA
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Sp.Gr: 1.55
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Fl.P: NA
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UEL: NA
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LEL: NA
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Noncombustible Solid, but contact with acids releases highly flammable hydrogen cyanide.
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Incompatibilities & Reactivities
Strong oxidizers (such as acids, acid salts, chlorates & nitrates) [Note: Absorbs moisture from the air forming a syrup.]
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Measurement Methods
NIOSH 6010, 7904
See: NMAM or OSHA Methods |
Personal Protection & Sanitation (See protection)
Skin: Prevent skin contact
Eyes: Prevent eye contact
Wash skin: When contaminated
Remove: When wet or contaminated
Change: Daily
Provide: Eyewash, Quick drench
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First Aid (See procedures)
Eye: Irrigate immediately
Skin: Soap wash immediately
Breathing: Respiratory support
Swallow: Medical attention immediately
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Respirator Recommendations
NIOSH/OSHA
Up to 25 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 canister providing protection against the compound of concern and 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
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Exposure Routes
inhalation, skin absorption, ingestion, skin and/or eye contact
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Symptoms
Irritation eyes, skin, upper respiratory system; asphyxia; lassitude (weakness, exhaustion), headache, confusion; nausea, vomiting; increased respiratory rate, slow gasping respiration; thyroid, blood changes
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Target Organs
Eyes, skin, respiratory system, cardiovascular system, central nervous system, thyroid, blood
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See also: INTRODUCTION
See ICSC CARD: 0671 |
