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POTASSIUM HYDROGEN SULFATEICSC: 1585
Potassium acid sulfate
Sulfuric acid monopotassium salt
Monopotassium sulfate
Potassium bisulfate
April 2013
CAS #: 7646-93-7
UN #: 2509
EC Number: 231-594-1

  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! AVOID ALL CONTACT!  
  SYMPTOMS PREVENTION FIRST AID
Inhalation Cough. Sore throat.  Use local exhaust or breathing protection.  Fresh air, rest. Seek medical attention if you feel unwell. 
Skin Redness. Pain. Skin burns.  Protective gloves. Protective clothing.  First rinse with plenty of water for at least 15 minutes, then remove contaminated clothes and rinse again. Refer for medical attention if skin irritation occurs. 
Eyes Redness. Pain. 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 Sore throat. Abdominal pain. Burning sensation. Shock or collapse.  Do not eat, drink, or smoke during work.  Do NOT induce vomiting. Refer immediately for medical attention. 

SPILLAGE DISPOSAL CLASSIFICATION & LABELLING
Personal protection: chemical protection suit and particulate filter respirator adapted to the airborne concentration of the substance. Sweep spilled substance into covered containers. If appropriate, moisten first to prevent dusting. 

According to UN GHS Criteria

correxcl mark;warn
DANGER
Causes severe skin burns and eye damage
May cause respiratory irritation 

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

STORAGE
Dry. Separated from strong bases, alcohols, metals and food and feedstuffs. 
PACKAGING
Unbreakable packaging.
Put breakable packaging into closed unbreakable container. 
POTASSIUM HYDROGEN SULFATE ICSC: 1585
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS-TO-WHITE HYGROSCOPIC CRYSTALS OR CRYSTALLINE POWDER. 

Physical dangers
 

Chemical dangers
Decomposes on heating. This produces toxic fumes. Reacts with alcohols and water. The solution in water is a medium strong acid. Attacks many metals. This produces flammable/explosive gas (hydrogen - see ICSC 0001). 

Formula: KHSO4
Molecular mass: 136.2
Decomposes at 195-214°C
Density: 2.2 g/cm³
Solubility in water, g/100ml: 49 (very good) 


EXPOSURE & HEALTH EFFECTS

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

Effects of short-term exposure
The substance is corrosive to the eyes, skin and respiratory tract. Corrosive on ingestion. 

Inhalation risk
A harmful concentration of airborne particles can be reached quickly when dispersed, especially if powdered. 

Effects of long-term or repeated exposure
 


OCCUPATIONAL EXPOSURE LIMITS
 

ENVIRONMENT
 

NOTES
Health effects of exposure to the substance have not been investigated adequately. 

ADDITIONAL INFORMATION
  EC Classification
Symbol: C; R: 34-37; S: (1/2)-26-36/37/39-45 

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    See Also:
       Toxicological Abbreviations