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NITRIC ACID
ICSC: 0183
Peer-Review Status: 10.10.2006 Validated
Concentrated Nitric Acid (>70%) 
CAS #: 7697-37-2 RTECS #: QU5775000
UN #: 2031
EC #: 007-004-00-1
EINECS #: 231-714-2
    Formula: HNO3
Molecular mass: 63.0

TYPES OF
HAZARD /
EXPOSURE
ACUTE HAZARDS / SYMPTOMS      PREVENTION      FIRST AID / FIRE FIGHTING
FIRE Not combustible but enhances combustion of other substances. Gives off irritating or toxic fumes (or gases) in a fire. Heating will cause rise in pressure with risk of bursting.  NO contact with flammables. NO contact with combustible substances or organic materials.  In case of fire in the surroundings, use appropriate extinguishing media. 
EXPLOSION Risk of fire and explosion on contact with organic materials.    In case of fire: keep drums, etc., 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. Symptoms may be delayed. See Notes.  Use ventilation, local exhaust or breathing protection.  Fresh air, rest. Half-upright position. Artificial respiration may be needed. Refer immediately for medical attention. 
Skin Serious skin burns. Pain. Yellow staining of the skin.  Protective gloves. Protective clothing.  Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention . 
Eyes Redness. Pain. Burns.  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 Sore throat. Abdominal pain. Burning sensation in the throat and chest. Shock or collapse. Vomiting.  Do not eat, drink, or smoke during work.  Do NOT induce vomiting. Give one or two glasses of water to drink. Rest. Refer for medical attention . 

SPILLAGE DISPOSAL
PACKAGING & LABELLING
Evacuate danger area! Consult an expert! Personal protection: complete protective clothing including self-contained breathing apparatus. Ventilation. Collect leaking and spilled liquid in sealable containers as far as possible. Cautiously neutralize remainder with with sodium carbonate. Then wash away with plenty of water. Do NOT absorb in saw-dust or other combustible absorbents.  Unbreakable packaging.
Put breakable packaging into closed unbreakable container.
Do not transport with food and feedstuffs. 
EC Classification
Symbol: O, C; R: 8-35; S: (1/2)-23-26-36-45; Note: B 
UN Classification
UN Hazard Class: 8; UN Subsidiary Risks: 5.1; UN Pack Group: I 
GHS Classification
Signal: Danger
May be corrosive to metals
Fatal if swallowed
Causes severe skin burns and eye damage
Causes damage to respiratory tract if inhaled
Causes damage to digestive tract if swallowed
Causes damage to respiratory tract and teeth through prolonged or repeated exposure if inhaled 
corrskull;toxiccancer;health haz

EMERGENCY RESPONSE SAFE STORAGE
Transport Emergency Card: TEC (R)-80S2031-I.
NFPA Code: H4; F0; R0; OX. 
Separated from combustible substances, reducing agents, bases, organic chemicals, and food and feedstuffs. Cool. Dry. Keep in a well-ventilated room. 

IMPORTANT DATA
Physical State; Appearance
COLOURLESS-TO-YELLOW LIQUID WITH PUNGENT ODOUR. 

Physical dangers
 

Chemical dangers
Decomposes on warming. This produces nitrogen oxides. The substance is a strong oxidant. It reacts violently with combustible and reducing materials, such as turpentine, charcoal and alcohol. The substance is a strong acid. It reacts violently with bases and is corrosive to metals. This produces flammable/explosive gas (hydrogen - see ICSC 0001). Reacts violently with organic compounds. 

Occupational exposure limits
TLV: 2 ppm as TWA; 4 ppm as STEL; (ACGIH 2006).
MAK (2b (not established but data is available)): (DFG 2008). 

Routes of exposure
Serious by all routes of exposure. 

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

Effects of short-term exposure
The substance is corrosive to the eyes, skin and respiratory tract. Corrosive on ingestion. Inhalation may cause lung oedema. The effects may be delayed. See Notes. 

Effects of long-term or repeated exposure
Repeated or prolonged inhalation of the vapour or aerosol may cause effects on the lungs. The substance may have effects on the teeth. This may result in tooth erosion. 


PHYSICAL PROPERTIES ENVIRONMENTAL DATA
Boiling point: 121°C
Melting point: -41.6°C
Relative density (water = 1): 1.4
Solubility in water: miscible
Vapour pressure, kPa at 20°C: 6.4
Relative vapour density (air = 1): 2.2
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.07
Octanol/water partition coefficient as log Pow: -0.21  
 

NOTES
Depending on the degree of exposure, periodic medical examination is suggested.
The symptoms of lung oedema do not become manifest until a few hours or even a few days have passed and they are aggravated by physical effort.
Card has been partially updated in January 2008: see Occupational Exposure Limits. 

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
© IPCS 2004-2012
LEGAL NOTICE Neither the EC nor the IPCS nor any person acting on behalf of the EC or the IPCS is responsible for the use which might be made of this information.
    See Also:
       Toxicological Abbreviations