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AMMONIUM HYDROXIDE (10%-35% solution)ICSC: 0215
March 1995
CAS #: 1336-21-6Aqua ammonia
Ammonium hydrate
UN #: 2672
EINECS #: 215-647-6

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Not combustible.  See Notes.      In case of fire in the surroundings, use appropriate extinguishing media.  In case of fire: keep drums, etc., cool by spraying with water. 

 STRICT HYGIENE! IN ALL CASES CONSULT A DOCTOR! 
  SYMPTOMS ACUTE HAZARDS FIRST AID
Inhalation Burning sensation. Cough. Laboured breathing. Shortness of breath. Sore throat.  Use ventilation, local exhaust or breathing protection.  Fresh air, rest. Artificial respiration may be needed. Refer for medical attention. 
Skin Redness. Serious skin burns. Pain. Blisters.  Protective gloves. Protective clothing.  Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention . 
Eyes Redness. Pain. Blurred vision. Severe deep burns.  Wear 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 refer for medical attention. 
Ingestion Abdominal cramps. Abdominal pain. Sore throat. Vomiting. Further see Inhalation.  Do not eat, drink, or smoke during work.  Rinse mouth. Do NOT induce vomiting. Give one or two glasses of water to drink. Refer for medical attention . 

SPILLAGE DISPOSAL CLASSIFICATION & LABELLING
Evacuate danger area! Consult an expert! Personal protection: complete protective clothing including self-contained breathing apparatus. Ventilation. Do NOT let this chemical enter the environment. Cautiously neutralize spilled liquid with dilute acid such as dilute sulfuric acid. Wash away remainder with plenty of water. 

According to UN GHS Criteria

 

Transportation
UN Classification
UN Hazard Class: 8; UN Pack Group: III 

STORAGE
Separated from food and feedstuffs. See Chemical Dangers. Cool. Well closed. Keep in a well-ventilated room. See Notes. 
PACKAGING
Unbreakable packaging.
Put breakable packaging into closed unbreakable container. 
AMMONIUM HYDROXIDE (10%-35% solution) ICSC: 0215
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
VERY VOLATILE COLOURLESS AMMONIA SOLUTION IN WATER WITH PUNGENT ODOUR. 

Physical dangers
 

Chemical dangers
Reacts with many heavy metals and heavy metal salts. This produces explosive compounds. Attacks many metals. This produces flammable/explosive gas (hydrogen - see ICSC 0001). The solution in water is a strong base. It reacts violently with acids. 

Formula: NH4OH
Molecular mass: 35.1
Boiling point: 38°C (25%)
Melting point: -58°C (25%)
Relative density (water = 1): 0.9 (25%)
Solubility in water: miscible
Vapour pressure, kPa at 20°C: 48 (25%)
Relative vapour density (air = 1): 0.6-1.2  


EXPOSURE & HEALTH EFFECTS

Routes of exposure
The substance can be absorbed into the body by inhalation of its aerosol or vapour and by ingestion. 

Effects of short-term exposure
The substance is corrosive to the eyes, skin and respiratory tract. Corrosive on ingestion. Inhalation of high concentrations of the vapour may cause laryngeal oedema, inflammation of the respiratory tract and pneumonia. The effects may be delayed. 

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

Effects of long-term or repeated exposure
Repeated or prolonged inhalation of the vapour or aerosol may cause effects on the lungs. 


Occupational exposure limits
 

ENVIRONMENT
The substance is very toxic to aquatic organisms. 

NOTES
Ammonia vapour is flammable and explosive under certain conditions.
Be aware that ammonia gas can evolve from ammonia solution.
Depending on the degree of exposure, periodic medical examination is suggested.
Do NOT completely fill bottles with the substance; strong solutions may develop pressure.
Release caps with care.
Other UN numbers are: UN 1005 Ammonia, anhydrous liquefied or ammonia solutions, relative density of less than 0.880 at 15°C in water, with more than 50% ammonia; UN 2073 Ammonia, 35-50%.
Also consult ICSC 0414 Ammonia. 

ADDITIONAL INFORMATION
  EC Classification
Symbol: C, N; R: 34-50; S: (1/2)-26-36/37/39-45-61; Note: B 

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    See Also:
       Toxicological Abbreviations