Acetone cyanohydrin
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CAS
75-86-5
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CH3C(OH)CNCH3
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RTECS
OD9275000
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Synonyms & Trade Names
Cyanohydrin-2-propanone, 2-Cyano-2-propanol, alpha-Hydroxyisobutyronitrile, 2-Hydroxy-2-methyl-propionitrile, 2-Methyllactonitrile
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DOT ID & Guide
1541 / 155 (stabilized)
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Exposure
Limits
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NIOSH REL: C 1 ppm (4 mg/m3) [15-minute]
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OSHA PEL: none
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IDLH
N.D.
See: IDLH INDEX
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Conversion
1 ppm = 3.48 mg/m3
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Physical Description
Colorless liquid with a faint odor of bitter almond. [Note: Forms cyanide in the body.]
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MW: 85.1
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BP: 203°F
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FRZ: -4°F
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Sol: Miscible
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VP: 0.8 mmHg
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IP: ?
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Sp.Gr(77°F): 0.93
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Fl.P: 165°F
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UEL: 12.0%
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LEL: 2.2%
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Class IIIA Combustible Liquid: Fl.P. at or above 140°F and below 200°F.
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Incompatibilities & Reactivities
Sulfuric acid, caustics [Note: Slowly decomposes to acetone & HCN at room temperatures; rate is accelerated by an increase in pH, water content, or temperature.]
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Measurement Methods
NIOSH 2506
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: No recommendation
Provide: Eyewash, Quick drench
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First Aid (See procedures)
Eye: Irrigate immediately
Skin: Water flush immediately
Breathing: Respiratory support
Swallow: Medical attention immediately
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Respirator Recommendations
NIOSH
Up to 10 ppm:
(APF = 10) Any supplied-air respirator
Up to 25 ppm:
(APF = 25) Any supplied-air respirator operated in a continuous-flow mode
Up to 50 ppm:
(APF = 50) Any self-contained breathing apparatus with a full facepiece
(APF = 50) Any supplied-air respirator with a full facepiece
Up to 250 ppm:
(APF = 2000) Any supplied-air respirator that has a full facepiece and is 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 organic vapor canister/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, respiratory system; dizziness, lassitude (weakness, exhaustion), headache, confusion, convulsions; liver, kidney injury; pulmonary edema, asphyxia
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Target Organs
Eyes, skin, respiratory system, central nervous system, cardiovascular system, liver, kidneys, gastrointestinal tract
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See also: INTRODUCTION
See ICSC CARD: 0611 |
