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NIOSH

n-HEPTANE

ICSC: 0657

C7H16 / CH3(CH2)5CH3
Molecular mass: 100.2
ICSC # 0657 		CAS # 142-82-5
RTECS # MI7700000
UN # 1206
EC # 601-008-00-2
November 04, 1997 Validated

TYPES OF HAZARD/ EXPOSURE

ACUTE HAZARDS/ SYMPTOMS

PREVENTION

FIRST AID/
FIRE FIGHTING

FIRE Highly flammable.
NO open flames, NO sparks, and NO smoking.
Powder , foam , carbon dioxide . NO water.
EXPLOSION Vapour/air mixtures are explosive.
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.
In case of fire: keep drums, etc., cool by spraying with water.
EXPOSURE


•INHALATION Dullness. Headache.
Ventilation.
Fresh air, rest. Artificial respiration may be needed. Refer for medical attention.
•SKIN Dry skin.
Protective gloves.
Remove contaminated clothes. Rinse and then wash skin with water and soap. Refer for medical attention. Wear protective gloves when administering first aid.
•EYES Redness. Pain.
Safety goggles or eye protection in combination with breathing protection.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
•INGESTION Abdominal cramps. Burning sensation. Nausea. Vomiting.
Do not eat, drink, or smoke during work.
Rinse mouth. Do NOT induce vomiting. Rest. Refer for medical attention.

SPILLAGE DISPOSAL

STORAGE

PACKAGING & LABELLING

Collect leaking liquid in sealable containers. Absorb remaining liquid in sand or inert absorbent and remove to safe place. Do NOT wash away into sewer. Personal protection: filter respirator for organic gases and vapours.
Fireproof. Separated from strong oxidants. Store in an area without drain or sewer access.

Note: C
F symbol
Xn symbol
N symbol
R: 11-38-50/53-65-67
S: 2-9-16-29-33-60-61-62
UN Hazard Class: 3
UN Packing Group: II
ICSC: 0657 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities (C) IPCS CEC 1994. No modifications to the International version have been made except to add the OSHA PELs, NIOSH RELs and NIOSH IDLH values.

n-HEPTANE

ICSC: 0657

I

M

P

O

R

T

A

N

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D

A

T

A

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. Attacks many plastics.

OCCUPATIONAL EXPOSURE LIMITS:
TLV: 400 ppm as TWA, 500 ppm as STEL; (ACGIH 2004).
EU OEL: 500 ppm, 2085 mg/m3 as TWA (EU 2000).
OSHA PEL†: TWA 500 ppm (2000 mg/m3)
NIOSH REL: TWA 85 ppm (350 mg/m3) C 440 ppm (1800 mg/m3) 15-minute
NIOSH IDLH: 750 ppm See: 142825


ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation of its vapour and by ingestion.

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

EFFECTS OF SHORT-TERM EXPOSURE:
The substance is irritating to the eyes and the skin . The vapour irritates the eyes, the skin and the respiratory tract. If this liquid is swallowed, aspiration into the lungs may result in chemical pneumonitis. The substance may cause effects on the central nervous system .

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
The liquid defats the skin. The substance may have effects on the liver , resulting in impaired functions .

PHYSICAL
PROPERTIES

Boiling point: 98°C
Melting point: -91°C
Relative density (water = 1): 0.68
Solubility in water:
none
Vapour pressure, kPa at 20°C: 4.6
Relative vapour density (air = 1): 3.46
Flash point: -4°C
Auto-ignition temperature: 285°C
Explosive limits, vol% in air: 1.1-6.7
Octanol/water partition coefficient as log Pow: 4.66

ENVIRONMENTAL
DATA

The substance is toxic to aquatic organisms. Bioaccumulation of this chemical may occur in fish. It is strongly advised that this substance does not enter the environment.

N O T E S

The odour warning when the exposure limit value is exceeded is insufficient. Skellysolve-C is a trade name. Card has been partly updated in October 2005. See sections Occupational Exposure Limits, EU classification, Emergency Response.
Transport Emergency Card: TEC (R)-30GF1-I+II

NFPA Code: H1; F3; R0;
Card has been partially updated in August 2007: see Fire fighting, Storage, Occupational Exposure Limits, Environmental Data.
Card has been partially updated in January 2008: see Occupational Exposure Limits.

ADDITIONAL INFORMATION



ICSC: 0657 n-HEPTANE
(C) IPCS, CEC, 1994
IMPORTANT LEGAL NOTICE: Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH, the CEC or the IPCS is responsible for the use which might be made of this information. This card contains the collective views of the IPCS Peer Review Committee and may not reflect in all cases all the detailed requirements included in national legislation on the subject. The user should verify compliance of the cards with the relevant legislation in the country of use. The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.
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