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HYDROXYLAMINE HYDROCHLORIDEICSC: 0709
September 1997
CAS #: 5470-11-1Hydroxylammonium chloride
Oxammonium hydrochloride
Hydroxylaminium chloride
EINECS #: 226-798-2

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Not combustible. Gives off irritating or toxic fumes (or gases) in a fire.        In case of fire in the surroundings, use appropriate extinguishing media.   

 PREVENT DISPERSION OF DUST! STRICT HYGIENE!  
  SYMPTOMS ACUTE HAZARDS FIRST AID
Inhalation Blue lips, fingernails and skin. Headache. Dizziness. Nausea. Confusion. Convulsions. Unconsciousness.  Use ventilation (not if powder). Use local exhaust or breathing protection.  Fresh air, rest. Refer for medical attention. 
Skin Redness. Pain. See Inhalation.  Protective gloves.  Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention . 
Eyes Redness. Pain.  Wear safety goggles or eye protection in combination with breathing protection if powder.  First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. 
Ingestion See Inhalation.  Do not eat, drink, or smoke during work.  Rinse mouth. Give a slurry of activated charcoal in water to drink. Refer for medical attention . 

SPILLAGE DISPOSAL CLASSIFICATION & LABELLING
Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Sweep spilled substance into covered containers. If appropriate, moisten first to prevent dusting. Do NOT wash away into sewer. 

According to UN GHS Criteria

 

Transportation
UN Classification
 

STORAGE
Dry. 
PACKAGING
 
HYDROXYLAMINE HYDROCHLORIDE ICSC: 0709
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS HYGROSCOPIC CRYSTALS. 

Physical dangers
No data. 

Chemical dangers
Decomposes slowly on contact with moisture. Upon heating, toxic fumes are formed. Decomposes on heating. The solution in water is a weak acid. 

Formula: NH2OH.HCl
Molecular mass: 69.5
Decomposes at 151-152°C
See Notes.
Relative density (water = 1): 1.7
Solubility in water, g/100ml at 17°C: 83  


EXPOSURE & HEALTH EFFECTS

Routes of exposure
The substance can be absorbed into the body by inhalation of its aerosol, through the skin and by ingestion. 

Effects of short-term exposure
The substance is irritating to the eyes, skin and respiratory tract. The substance may cause effects on the red blood cells. This may result in the formation of methaemoglobin. Medical observation is indicated. 

Inhalation risk
Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly when dispersed. 

Effects of long-term or repeated exposure
Repeated or prolonged contact may cause skin sensitization. 


Occupational exposure limits
 

ENVIRONMENT
 

NOTES
Some references give a melting point (under decomposition) of 151-152°C, while one of them contains a warning for explosion on heating above 115°C.
Depending on the degree of exposure, periodic medical examination is suggested.
Specific treatment is necessary in case of poisoning with this substance; the appropriate means with instructions must be available. 

ADDITIONAL INFORMATION
  EC Classification
Symbol: Xn, N; R: 22-36/38-43-48/22-50; S: (2)-22-24-37-61 

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    See Also:
       Toxicological Abbreviations