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n-HEPTANEICSC: 0657
HeptaneJune 2015
CAS #: 142-82-5
UN #: 1206
EC Number: 205-563-8

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Highly flammable.  Vapour/air mixtures are explosive.  NO open flames, NO sparks and NO smoking.  Closed system, ventilation, explosion-proof electrical equipment and lighting. Prevent build-up of electrostatic charges (e.g., by grounding). Do NOT use compressed air for filling, discharging, or handling. Use non-sparking handtools.  Use alcohol-resistant foam, dry powder, carbon dioxide, water spray.  In case of fire: keep drums, etc., cool by spraying with water. 

 PREVENT GENERATION OF MISTS!  
  SYMPTOMS PREVENTION FIRST AID
Inhalation Cough. Incoordination. Dizziness. Weakness. Nausea. Drowsiness.  Use ventilation, local exhaust or breathing protection.  Fresh air, rest. Refer for medical attention. 
Skin Redness. Swelling. Pain.  Protective gloves.  Rinse and then wash skin with water and soap. Refer for medical attention if skin irritation occurs. 
Eyes Redness.  Wear safety goggles 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 Aspiration hazard! Sore throat. Abdominal pain. Headache. Dizziness. Nausea. Vomiting. Unconsciousness.  Do not eat, drink, or smoke during work.  Rinse mouth. Give nothing to drink. Do NOT induce vomiting. Refer immediately for medical attention. See Notes. 

SPILLAGE DISPOSAL CLASSIFICATION & LABELLING
Remove all ignition sources. Consult an expert! Personal protection: filter respirator for organic gases and vapours adapted to the airborne concentration of the substance. Do NOT let this chemical enter the environment. Do NOT wash away into sewer. Collect leaking liquid in sealable containers. Absorb remaining liquid in sand or inert absorbent. Then store and dispose of according to local regulations. Carefully collect remainder. 

According to UN GHS Criteria

flam;flameexcl mark;warncancer;health hazenviro;aqua
DANGER
Highly flammable liquid and vapour
May be fatal if swallowed and enters airways
Causes skin irritation
May cause drowsiness or dizziness
Very toxic to aquatic life with long lasting effects 

Transportation
UN Classification
UN Hazard Class: 3; UN Pack Group: II 

STORAGE
Fireproof. Separated from strong oxidants. Store in an area without drain or sewer access. Provision to contain effluent from fire extinguishing. 
PACKAGING
Marine pollutant. 
n-HEPTANE ICSC: 0657
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
VOLATILE COLOURLESS LIQUID WITH CHARACTERISTIC ODOUR. 

Physical dangers
The vapour is heavier than air and may travel along the ground; distant ignition possible. As a result of flow, agitation, etc., electrostatic charges can be generated. 

Chemical dangers
Reacts violently with strong oxidants. This generates fire and explosion hazard. Attacks many plastics. 

Formula: C7H16 / CH3(CH2)5CH3
Molecular mass: 100.2
Boiling point: 98.4°C
Melting point: -90.7°C
Density (at 20°C): 0.68 g/ml
Solubility in water, mg/l at 25°C: 2.2 (very poor)
Vapour pressure, kPa at 20°C: 4.6
Relative vapour density (air = 1): 3.5
Flash point: -7°C c.c.
Auto-ignition temperature: 220°C
Explosive limits, vol% in air: 0.8-6.7
Octanol/water partition coefficient as log Pow: 4.66  


EXPOSURE & HEALTH EFFECTS

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

Effects of short-term exposure
The substance is irritating to the skin. The vapour is irritating to the respiratory tract. If swallowed the substance easily enters the airways and could result in aspiration pneumonitis. The substance may cause effects on the central nervous system. 

Inhalation risk
A harmful contamination of the air will be reached rather slowly on evaporation of this substance at 20°C. 

Effects of long-term or repeated exposure
The substance defats the skin, which may cause dryness or cracking. 


OCCUPATIONAL EXPOSURE LIMITS
TLV: 400 ppm as TWA; 500 ppm as STEL.
MAK: 2100 mg/m3, 500 ppm; peak limitation category: I(1); pregnancy risk group: D.
EU-OEL: 2085 mg/m3, 500 ppm as TWA 

ENVIRONMENT
The substance is toxic to aquatic organisms. The substance may cause long-term effects in the aquatic environment. Bioaccumulation of this chemical may occur in fish. It is strongly advised not to let the chemical enter into the environment. 

NOTES
The odour warning when the exposure limit value is exceeded is insufficient.
The symptoms of chemical pneumonitis do not become manifest until a few hours or even days have passed. 

ADDITIONAL INFORMATION
  EC Classification
Symbol: F, Xn, N; R: 11-38-50/53-65-67; S: (2)-9-16-29-33-60-61-62; Note: C 

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    See Also:
       Toxicological Abbreviations