# NIOSH Pocket Guide to Chemical Hazards
Adiponitrile | CAS 111-69-3
NC(CH2)4CN | RTECS AV2625000
Synonyms & Trade Names 1,4-Dicyanobutane; Hexanedinitrile; Tetramethylene cyanide | DOT ID & Guide 2205 153
Exposure Limits | NIOSH REL: TWA 4 ppm (18 mg/m3)
OSHA PEL: none
IDLH N.D. | Conversion 1 ppm = 4.43 mg/m3
Physical Description Water-white, practically odorless, oily liquid. [Note: A solid below 34°F. Forms cyanide in the body.]
MW: 108.2 | BP: 563°F | FRZ: 34°F | Sol: 4.5%
VP: 0.002 mmHg | IP: ? |  | Sp.Gr: 0.97
Fl.P(o.c.): 199°F | UEL: 5.0% | LEL: 1.7% |
Class IIIA Combustible Liquid: Fl.P. at or above 140°F and below 200°F.
Incompatibilities & Reactivities Oxidizers (e.g., perchlorates, nitrates), strong acids (e.g., sulfuric acid) [Note: Decomposes above 194°F, forming hydrogen cyanide.]
Measurement Methods NIOSH Nitriles Crit. Doc.
Personal Protection & Sanitation 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 wash immediately Breathing: Respiratory support Swallow: Medical attention immediately
Respirator Recommendations NIOSH Up to 40 ppm: (APF = 10) Any supplied-air respirator Up to 100 ppm: (APF = 25) Any supplied-air respirator operated in a continuous-flow mode Up to 200 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
Exposure Routes inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms Irritation eyes, skin, respiratory system; headache, dizziness, lassitude (weakness, exhaustion), confusion, convulsions; blurred vision; dyspnea (breathing difficulty); abdominal pain, nausea, vomiting
Target Organs Eyes, skin, respiratory system, central nervous system, cardiovascular system
See also: INTRODUCTION