Shut off supply; if not possible and no risk to surroundings, let the fire burn itself out; in other cases extinguish with powder, water spray, foam, carbon dioxide.

May be absorbed through skin and eyes.

AVOID ALL CONTACT!

IN ALL CASES refer for medical attention!

Triage procedures and medical management guidelines - see ATSDR medical management guidelines for Hydrogen Cyanide.

• Headache
• Dizziness
• Confusion
• Nausea
• Shortness of breath
• Convulsions
• Vomiting
• Weakness
• Anxiety
• Irregular heart beat
• Tightness in the chest
• Unconsciousness
• Effects may be delayed.
  

Ventilation, local exhaust, or breathing protection.

Gas mask with HC (Hydrogen Cyanide) canister (escape).

Pressure demand, self-contained breathing apparatus (SCBA) (SCBA CBRN, if available) is recommended in response to non-routine emergency situations

CBRN, Full Facepiece APR (when available) is recommended in non-routine, emergency situation environments less than IDLH but above REL or PEL levels.

Fresh air, rest. Half-upright position. Avoid mouth to mouth resuscitation, administer oxygen by trained personnel.

Seek medical attention immediately.(See Notes.)

Triage procedures and medical management guidelines - see ATSDR medical management guidelines for Hydrogen Cyanide.

MAY BE ABSORBED!

(See Inhalation for other symptoms.)

Butyl rubber gloves. Teflon, Responder, or Tychem Protective clothing. See NIOSH Protective Clothing.

Remove contaminated clothes. Rinse skin with plenty of water or shower. Wear protective gloves when administering first aid.

Seek medical attention immediately.

VAPOR WILL BE ABSORBED! Redness.

(See Inhalation for other symptoms.)

Safety goggles, face shield, or eye protection in combination with breathing protection.

First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then seek medical attention immediately.

Burning sensation.

(See Inhalation for other symptoms.)

Seek medical attention immediately. (See Notes.)

OSHA PEL: TWA 10 ppm (11 mg/m³) skin
NIOSH REL: ST (short term) 4.7 ppm (5 mg/m³) skin
ACGIH TLV : 4.7 ppm; 5 mg/m³ (ceiling value) (skin) (ACGIH 2002).
NIOSH IDLH: 50 ppm
(See Acute Exposure Guideline levels below.)

Patients/victims: Wet contaminated clothing should be removed and the underlying skin washed with soap and water or water alone for 2-3 minutes.

Environment: (See Spillage Disposal.)

Evacuate danger area immediately! Consult an expert! Ventilation. Absorb remaining liquid in sand or inert absorbent and remove to safe place. Do NOT wash away into sewer. NEVER direct water jet on liquid. Prevent from entering confined spaces. Do NOT let this chemical enter the environment.

Extra personal protection: gas-tight chemical protection suit including self-contained breathing apparatus.

STORAGE: Fireproof. Separated from food and feedstuffs. Cool. Store only if stabilized.

NFPA 704 Signal:
Health - 4
Flammability - 4
Reactivity - 2
Special -

PHYSICAL STATE; APPEARANCE:
Colorless Gas or Liquid, with characteristic odor.

PHYSICAL DANGERS:
The gas mixes well with air, explosive mixtures are easily formed.

CHEMICAL DANGERS:
The substance may polymerize due to warming, under the influence of base(s), over 2% water, or temperatures above 184°C, or if not chemically stabilized, with fire or explosion hazard. On combustion, forms toxic and corrosive gases, including nitrogen oxides. The solution in water is a weak acid. Reacts violently with oxidants, hydrogen chloride in alcoholic mixtures, causing fire and explosion hazard.

ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation, through the skin and by ingestion.

INHALATION RISK:
A harmful contamination of the air can be reached very quickly on evaporation of this substance at 20°C.

EFFECTS OF SHORT-TERM EXPOSURE:
The substance irritates the eyes and the respiratory tract. Cyanides poison the vital organs of the body (for example the lungs and heart) including areas of the brain that regulate proper functioning of those organs. Exposure may result in convulsions, unconsciousness and in death. (See Notes.)

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
N/A

Mineral acids are commonly used as stabilizers. The occupational exposure limit value should not be exceeded during any part of the working exposure. Specific treatment is necessary in case of poisoning with this substance; the appropriate means with instructions must be available. The odor warning when the exposure limit value is exceeded is insufficient. The recommendations on this Card also apply to hydrogen cyanide, stabilized, absorbed in a porous inert material. Another UN number: 1614, hydrogen cyanide stabilized, absorbed in a porous inert material.

Trade Names and Other Synonyms

• Carbon hydride nitride
• Cyclon
• Cyclone B
• Evercyn
• Formic anammonide
• Formonitrile

APR - Air-purifying Respirator
CBRN - Chemical, Biological, Radiological, Nuclear
IDLH - Immediately Dangerous to Life and Health
REL - Recommended Exposure Limit
PEL - Permissible Exposure Limit
SCBA - Self-Contained Breathing Apparatus