n-PENTANE

International Chemical Safety Cards

n-PENTANE

ICSC: 0534

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

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.	AFFF, alcohol-resistant foam, powder, 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. Half-upright position. Artificial respiration if indicated. 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. Give plenty of water to drink. Rest. Refer for medical attention.

SPILLAGE DISPOSAL

STORAGE

PACKAGING & LABELLING

Evacuate danger area! Consult an expert! Ventilation. Collect leaking and spilled liquid in sealable containers as far as possible. Absorb remaining liquid in 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.

Unbreakable packaging; put breakable packaging into closed unbreakable container.
F symbol
R: 11
S: 9-16-29-33
UN Hazard Class: 3.1
UN Packing Group: I

SEE IMPORTANT INFORMATION ON BACK

ICSC: 0534

Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities © IPCS CEC 1993

International Chemical Safety Cards

n-PENTANE

ICSC: 0534

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

PHYSICAL DANGERS:
The vapour is heavier than air and may travel along the ground; distant ignition possible.

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 (OELs):
TLV: 600 ppm; 1770 mg/m³ (as TWA); 750 ppm; 2210 mg/m³ (as STEL) (ACGIH 1991-1992).
PDK: 300 mg/m³ (USSR 1984).

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 systems.

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 20°C: 56.8
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.)°C
Auto-ignition temperature: 309°C
Explosive limits, vol% in air: 1.5-7.8
Octanol/water partition coefficient as log Pow: 3.39