INTOX Home Page
ACETONE CYANOHYDRIN ICSC: 0611
Date of Peer Review: March 1998

2-Hydroxy-2-methyl propionitrile
2-Methyl-lactonitrile
2-Cyanopropan-2-ol
p-Hydroxyisobutyronitrile
CAS # 75-86-5 (CH3)2C(OH)CN / C4H7NO
RTECS # OD9275000 Molecular mass: 85.1
UN # 1541
EC Index # 608-004-00-X
TYPES OF HAZARD / EXPOSURE ACUTE HAZARDS / SYMPTOMS PREVENTION FIRST AID / FIRE FIGHTING
FIRE Combustible. Gives off irritating or toxic fumes (or gases) in a fire.
NO open flames.
Powder, AFFF, foam, carbon dioxide.
EXPLOSION Above 74C explosive vapour/air mixtures may be formed.
Above 74C use a closed system, ventilation.
In case of fire: cool drums, etc., by spraying with water but avoid contact of the substance with water. Combat fire from a sheltered position.
EXPOSURE
AVOID ALL CONTACT!
IN ALL CASES CONSULT A DOCTOR!
Inhalation Convulsions. Cough. Dizziness. Headache. Laboured breathing. Nausea. Shortness of breath. Unconsciousness. Vomiting. Irregular heartbeat, tightness in the chest.
Closed system and ventilation.
Fresh air, rest. Half-upright position. Artificial respiration may be needed. Refer for medical attention.
Skin MAY BE ABSORBED! Redness. Pain. (See Inhalation).
Protective gloves. Protective clothing.
Rinse and then wash skin with water and soap. Refer for medical attention.
Eyes Redness. Pain.
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 take to a doctor.
Ingestion Abdominal cramps. Burning sensation. Convulsions. Unconsciousness. (See Notes, (see Inhalation).
Do not eat, drink, or smoke during work.
Rinse mouth. Refer for medical attention.
SPILLAGE DISPOSAL PACKAGING & LABELLING
Sweep spilled substance into containers. Carefully collect remainder, then remove to safe place. Do NOT let this chemical enter the environment. Personal protection: complete protective clothing including self-contained breathing apparatus.
Airtight. Do not transport with food and feedstuffs. Marine pollutant.
EU Classification
Symbol: T+, N
R: 26/27/28-50/53
S: (1/2-)-7/9-27-45-60-61
UN Classification
UN Hazard Class: 6.1
UN Pack Group: I
EMERGENCY RESPONSE STORAGE
Transport Emergency Card: TEC (R)-61S1541
NFPA Code: H4; F1; R2
Provision to contain effluent from fire extinguishing. Separated from strong bases, acids, water, food and feedstuffs. Well closed. Keep in a well-ventilated room.
IPCS
International
Programme on
Chemical Safety
Prepared in the context of cooperation between the International Programme on Chemical Safety and the Commission of the European Communities IPCS, CEC 2005

SEE IMPORTANT INFORMATION ON BACK
ACETONE CYANOHYDRIN ICSC: 0611
IMPORTANT DATA
PHYSICAL STATE; APPEARANCE:
COLOURLESS LIQUID, WITH CHARACTERISTIC ODOUR.

PHYSICAL DANGERS:
The vapour is heavier than air.

CHEMICAL DANGERS:
The substance decomposes rapidly on heating or on contact with bases or water producing highly toxic and flammable hydrogen cyanide (see ICSC 0492), and acetone (see ICSC 0087). Reacts violently with acids and oxidants causing fire and explosion hazard.

OCCUPATIONAL EXPOSURE LIMITS:
TLV: (as CN) 5 mg/m (Ceiling value); (skin); (ACGIH 2004).
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 rather quickly on evaporation of this substance at 20C.

EFFECTS OF SHORT-TERM EXPOSURE:
The substance is irritating to the eyes, the skin and the respiratory tract. The substance may cause effects on the cardiovascular system and central nervous system, resulting in asphyxia, cardiac disorders, convulsions, cyanosis and respiratory failure. Exposure may result in death. Medical observation is indicated. See Notes.

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
The substance may have effects on the central nervous system and thyroid, resulting in impaired functions.
PHYSICAL PROPERTIES
Boiling point: 95C
Melting point: -19C
Relative density (water = 1): 0.93
Solubility in water: freely soluble, but decomposes in water
Vapour pressure, kPa at 20C: 3.0
Relative vapour density (air = 1): 2.93
Flash point: 74C c.c.
Explosive limits, vol% in air: 2.2-12
ENVIRONMENTAL DATA
The substance is very toxic to aquatic organisms. Avoid release to the environment in circumstances different to normal use.
NOTES
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. Hazard and toxicity of this substance is due to its major metabolite - hydrogen cyanide (see ICSC 0492).
Card has been partly updated in October 2004 and 2005. See sections Occupational Exposure Limits, EU classification, Emergency Response.
ADDITIONAL INFORMATION


LEGAL NOTICE Neither the CEC nor the IPCS nor any person acting on behalf of the CEC or the IPCS is responsible for the use which might be made of this information
IPCS, CEC 2005