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NIOSH

n-PENTANE

ICSC: 0534

Amyl hydride
C5H12 / CH3(CH2)3CH3
Molecular mass: 72.2
ICSC # 0534 		CAS # 109-66-0
RTECS # RZ9450000
UN # 1265
EC # 601-006-00-1
October 19, 1999 Validated

TYPES OF HAZARD/ EXPOSURE

ACUTE HAZARDS/ SYMPTOMS

PREVENTION

FIRST AID/
FIRE FIGHTING

FIRE Highly flammable.
NO open flames, NO sparks, and NO smoking. NO contact with strong oxidants.
Powder, AFFF, foam, carbon dioxide.
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. Use non-sparking handtools.
In case of fire: keep drums, etc., cool by spraying with water.
EXPOSURE


•INHALATION Dizziness. Drowsiness. Headache. Nausea. Unconsciousness. Vomiting.
Ventilation, local exhaust, or breathing protection.
Fresh air, rest. Refer for medical attention.
•SKIN Dry skin.
Protective gloves.
Remove contaminated clothes. Rinse and then wash skin with water and soap.
•EYES
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 (Further see Inhalation).
Do not eat, drink, or smoke during work.
Rinse mouth. Do NOT induce vomiting. Rest. Refer for medical attention.

SPILLAGE DISPOSAL

STORAGE

PACKAGING & LABELLING

Evacuate danger area! Consult an expert! Ventilation. Remove all ignition sources. Collect leaking and spilled liquid in sealable containers as far as possible. Absorb remaining liquid in dry sand or inert absorbent and remove to safe place. Do NOT wash away into sewer. (Extra personal protection: self-contained breathing apparatus).
Fireproof. Separated from strong oxidants. Cool. Well closed.

Note: C
F+ symbol
Xn symbol
N symbol
R: 12-65-66-67-51/53
S: 2-9-16-29-33-61-62
UN Hazard Class: 3
UN Packing Group: I
ICSC: 0534 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-PENTANE

ICSC: 0534

I

M

P

O

R

T

A

N

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D

A

T

A

PHYSICAL STATE; APPEARANCE:
COLOURLESS LIQUID , WITH CHARACTERISTIC ODOUR.

PHYSICAL DANGERS:
The vapour is heavier than air and may travel along the ground; distant ignition possible, and may accumulate in low ceiling spaces causing deficiency of oxygen.

CHEMICAL DANGERS:
Reacts with strong oxidants (e.g., peroxides, nitrates and perchlorates), causing fire and explosion hazard. Attacks some forms of plastics, rubber and coatings.

OCCUPATIONAL EXPOSURE LIMITS:
TLV: 600 ppm; (ACGIH 1999).
MAK:
Pregnancy risk group: C
(DFG 2006).
EU OEL: 1000 ppm, 3000 mg/m3 as TWA (EU 2006).
OSHA PEL†: TWA 1000 ppm (2950 mg/m3)
NIOSH REL: TWA 120 ppm (350 mg/m3) C 610 ppm (1800 mg/m3) 15-minute
NIOSH IDLH: 1500 ppm 10%LEL See: 109660


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 can be reached rather quickly on evaporation of this substance at 20°C.

EFFECTS OF SHORT-TERM EXPOSURE:
Swallowing the liquid may cause aspiration into the lungs with the risk of chemical pneumonitis. The substance may cause effects on the central nervous system.

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
Repeated or prolonged contact with skin may cause dermatitis.

PHYSICAL
PROPERTIES

Boiling point: 36°C
Melting point: -129°C
Relative density (water = 1): 0.63
Solubility in water: none
Vapour pressure, kPa at 18.5°C: 53.3
Relative vapour density (air = 1): 2.5
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.8
Flash point:
-49°C c.c.
Auto-ignition temperature: 309°C
Explosive limits, vol% in air: 1.5-7.8
Octanol/water partition coefficient as log Pow: 3.39

ENVIRONMENTAL
DATA

The substance is harmful to aquatic organisms.

N O T E S

High concentrations in the air cause a deficiency of oxygen with the risk of unconsciousness or death. Check oxygen content before entering area. Skellysolve A is a trade name. Card has been partly updated in October 2006. See section Occupational Exposure Limits.
Transport Emergency Card: TEC (R)-592/30G30

NFPA Code: H 1; F 4; R 0;

ADDITIONAL INFORMATION



ICSC: 0534 n-PENTANE
(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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