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AMMONIA (ANHYDROUS)
ICSC: 0414
Peer-Review Status: 04.10.2013 Validated
R717
Refrigerant gas 717 
CAS #: 7664-41-7 RTECS #: BO0875000
UN #: 1005
EC #: 007-001-00-5
EINECS #: 231-635-3
    Formula: NH3
Molecular mass: 17.0

TYPES OF HAZARD
/ EXPOSURE
ACUTE HAZARDS / SYMPTOMS PREVENTION FIRST AID / FIRE-FIGHTING
FIRE Flammable. Cylinder may explode in heat of fire.  NO open flames, NO sparks and NO smoking.  In case of fire in the surroundings, use appropriate extinguishing media. 
EXPLOSION Gas/air mixtures are explosive.  Closed system, ventilation, explosion-proof electrical equipment and lighting.  In case of fire: keep cylinder cool by spraying with water. 
 
EXPOSURE   AVOID ALL CONTACT!  IN ALL CASES CONSULT A DOCTOR! 
Inhalation Burning sensation. Cough. Laboured breathing. Shortness of breath. Sore throat.  Use ventilation, local exhaust or breathing protection.  Fresh air, rest. Half-upright position. Administration of oxygen may be needed. Refer immediately for medical attention. 
Skin Redness. Pain. Blisters. Skin burns. ON CONTACT WITH LIQUID: FROSTBITE.  Cold-insulating gloves. Protective clothing.  Rinse skin with plenty of water or shower for at least 15 minutes. ON FROSTBITE: rinse with plenty of water, do NOT remove clothes. Refer immediately for medical attention . 
Eyes Redness. Pain. Severe burns. ON CONTACT WITH LIQUID: FROSTBITE.  Wear face shield or eye protection in combination with breathing protection.  Rinse with plenty of water for several minutes (remove contact lenses if easily possible). Refer immediately for medical attention. 
Ingestion      

SPILLAGE DISPOSAL
PACKAGING & LABELLING
Evacuate danger area! Consult an expert! Personal protection: gas-tight chemical protection suit including self-contained breathing apparatus. Ventilation. Shut off cylinder if possible. Isolate the area until the gas has dispersed. Remove gas with fine water spray. NEVER direct water jet on liquid.   
EC Classification
Symbol: T, N; R: 10-23-34-50; S: (1/2)-9-16-26-36/37/39-45-61; Note: U 
UN Classification
UN Hazard Class: 2.3; UN Subsidiary Risks: 8 
GHS Classification
Signal: Danger
Flammable gas
Contains gas under pressure; may explode if heated
Toxic if inhaled
Causes severe skin burns and eye damage
Very toxic to aquatic life 
cylinder;gasskull;toxiccorrenviro;aqua

EMERGENCY RESPONSE SAFE STORAGE
NFPA Code: H3; F1; R0.  Fireproof. Separated from oxidants, acids and halogens. Cool. Keep in a well-ventilated room. 

IMPORTANT DATA
Physical State; Appearance
COLOURLESS GAS OR COMPRESSED LIQUEFIED GAS WITH PUNGENT ODOUR. 

Physical dangers
The gas is lighter than air. 

Chemical dangers
Mixtures with mercury, silver and gold oxides are shock-sensitive. The substance is a strong base. It reacts violently with acid and is corrosive. Reacts violently with strong oxidants, halogens and many other substances. Attacks copper, aluminium, zinc and their alloys. Dissolves in water evolving heat. The substance reacts with most organic and inorganic compounds, causing fire and explosion hazard. 

Occupational exposure limits
TLV: 25 ppm as TWA; 35 ppm as STEL; (ACGIH 2013).
MAK: 20 ppm, 14 mg/m³; Peak limitation category: I(2); Pregnancy risk group: C; (DFG 2013). 

Routes of exposure
The substance can be absorbed into the body by inhalation. 

Inhalation risk
A harmful concentration of this gas in the air will be reached very quickly on loss of containment. 

Effects of short-term exposure
Rapid evaporation of the liquid may cause frostbite. The substance is corrosive to the eyes, skin and respiratory tract. Exposure could cause asphyxiation due to swelling in the throat. Inhalation may cause lung oedema, but only after initial corrosive effects on eyes and/or airways have become manifest. 

Effects of long-term or repeated exposure
Repeated or chronic inhalation of the vapour may cause chronic inflammation of the upper respiratory tract. Lungs may be affected by repeated or prolongated exposure. This may result in chronic obstructive pulmonary disorders (COPD). 


PHYSICAL PROPERTIES ENVIRONMENTAL DATA
Boiling point: -33°C
Melting point: -78°C
Relative density (water = 1): 0.7 (-33°C)
Solubility in water, g/100ml at 20°C: 54
Vapour pressure, kPa at 26°C: 1013
Relative vapour density (air = 1): 0.60
Auto-ignition temperature: 630°C
Explosive limits, vol% in air: 15-33.6 
The substance is very toxic to aquatic organisms. It is strongly advised not to let the chemical enter into the environment. 

NOTES
Ammonia is normally supplied in compressed liquified form in cylinders.
See also ICSC 0215.
Turn leaking cylinder with the leak up to prevent escape of gas in liquid state. 

ADDITIONAL INFORMATION
 

IPCS
International
Programme on
Chemical Safety
WHO ILO EC Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
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    See Also:
       Toxicological Abbreviations