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NIOSH

2,2,4-TRIMETHYLPENTANE

ICSC: 0496

Isooctane
Isobutyltrimethylmethane
CH3C(CH3)2CH2CH(CH3)2 / C8H18
Molecular mass: 114.3
ICSC # 0496 		CAS # 540-84-1
RTECS # SA3320000
UN # 1262
EC # 601-009-00-8
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.
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.
In case of fire: keep drums, etc., cool by spraying with water. Combat fire from a sheltered position.
EXPOSURE


•INHALATION Confusion. Dizziness. Headache. Nausea. Vomiting.
Ventilation, local exhaust, or breathing protection.
Fresh air, rest. Artificial respiration may be needed. Refer for medical attention.
•SKIN Dry skin. Redness. Pain.
Protective gloves.
Remove contaminated clothes. Rinse and then wash skin with water and soap.
•EYES Redness.
Safety goggles.
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. Refer for medical attention.

SPILLAGE DISPOSAL

STORAGE

PACKAGING & LABELLING

Evacuate danger area! Remove all ignition sources. 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. Personal protection: self-contained breathing apparatus.
Fireproof. Separated from strong oxidants. Cool. Keep in a well-ventilated room.

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: 0496 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.

2,2,4-TRIMETHYLPENTANE

ICSC: 0496

I

M

P

O

R

T

A

N

T


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. As a result of flow, agitation, etc., electrostatic charges can be generated.

CHEMICAL DANGERS:
Heating may cause violent combustion or explosion. Reacts with strong oxidants.

OCCUPATIONAL EXPOSURE LIMITS:
TLV: 300 ppm as TWA; (ACGIH 2004).
MAK:
Carcinogen category: 3A;
(DFG 2004).


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

INHALATION RISK:
No indication can be given about the rate in which a harmful concentration in the air is reached on evaporation of this substance at 20°C.

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

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
The liquid defats the skin.

PHYSICAL
PROPERTIES

Boiling point: 99°C
Melting point: -107°C
Relative density (water = 1): 0.69
Solubility in water:
none
Vapour pressure, kPa at 20°C: 5.1
Relative vapour density (air = 1): 3.9
Flash point:

4.5°C o.c.
Auto-ignition temperature: 417°C
Explosive limits, vol% in air: 1.1-6.0

ENVIRONMENTAL
DATA


N O T E S

Card has been partly updated in October 2005. See sections Occupational Exposure Limits, Emergency Response.
Transport Emergency Card: TEC (R)-30S1262 or 30GF1-I+II

NFPA Code: H 0; F 3; R 0;

ADDITIONAL INFORMATION



ICSC: 0496 2,2,4-TRIMETHYLPENTANE
(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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